Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

66 files changed, 1909 insertions, 2221 deletions

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 6a06913b01d..6aad99ec4e0 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -323,7 +323,7 @@ config SPECIALIX
 
 config SX
 	tristate "Specialix SX (and SI) card support"
-	depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA)
+	depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN
 	help
 	  This is a driver for the SX and SI multiport serial cards.
 	  Please read the file <file:Documentation/serial/sx.txt> for details.
@@ -334,7 +334,7 @@ config SX
 
 config RIO
 	tristate "Specialix RIO system support"
-	depends on SERIAL_NONSTANDARD
+	depends on SERIAL_NONSTANDARD && BROKEN
 	help
 	  This is a driver for the Specialix RIO, a smart serial card which
 	  drives an outboard box that can support up to 128 ports.  Product
@@ -395,7 +395,7 @@ config NOZOMI
 
 config A2232
 	tristate "Commodore A2232 serial support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && ZORRO && BROKEN_ON_SMP
+	depends on EXPERIMENTAL && ZORRO && BROKEN
 	---help---
 	  This option supports the 2232 7-port serial card shipped with the
 	  Amiga 2000 and other Zorro-bus machines, dating from 1989.  At
@@ -1087,6 +1087,14 @@ config MMTIMER
 	  The mmtimer device allows direct userspace access to the
 	  Altix system timer.
 
+config UV_MMTIMER
+	tristate "UV_MMTIMER Memory mapped RTC for SGI UV"
+	depends on X86_UV
+	default m
+	help
+	  The uv_mmtimer device allows direct userspace access to the
+	  UV system timer.
+
 source "drivers/char/tpm/Kconfig"
 
 config TELCLOCK
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 66f779ad4f4..19a79dd79ee 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_RAW_DRIVER)	+= raw.o
 obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o
 obj-$(CONFIG_MSPEC)		+= mspec.o
 obj-$(CONFIG_MMTIMER)		+= mmtimer.o
+obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o
 obj-$(CONFIG_VIOTAPE)		+= viotape.o
 obj-$(CONFIG_HVCS)		+= hvcs.o
 obj-$(CONFIG_IBM_BSR)		+= bsr.o
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index d6f36c004d9..870f12cfed9 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -131,7 +131,7 @@ struct agp_bridge_driver {
 struct agp_bridge_data {
 	const struct agp_version *version;
 	const struct agp_bridge_driver *driver;
-	struct vm_operations_struct *vm_ops;
+	const struct vm_operations_struct *vm_ops;
 	void *previous_size;
 	void *current_size;
 	void *dev_private_data;
diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c
index 5ea4da8e995..dd84af4d4f7 100644
--- a/drivers/char/agp/alpha-agp.c
+++ b/drivers/char/agp/alpha-agp.c
@@ -40,7 +40,7 @@ static struct aper_size_info_fixed alpha_core_agp_sizes[] =
 	{ 0, 0, 0 }, /* filled in by alpha_core_agp_setup */
 };
 
-struct vm_operations_struct alpha_core_agp_vm_ops = {
+static const struct vm_operations_struct alpha_core_agp_vm_ops = {
 	.fault = alpha_core_agp_vm_fault,
 };
 
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index ad87753f6de..a56ca080e10 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -114,9 +114,9 @@ static int agp_find_max(void)
 	long memory, index, result;
 
 #if PAGE_SHIFT < 20
-	memory = num_physpages >> (20 - PAGE_SHIFT);
+	memory = totalram_pages >> (20 - PAGE_SHIFT);
 #else
-	memory = num_physpages << (PAGE_SHIFT - 20);
+	memory = totalram_pages << (PAGE_SHIFT - 20);
 #endif
 	index = 1;
 
diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
index 501e293e5ad..9047b271465 100644
--- a/drivers/char/agp/hp-agp.c
+++ b/drivers/char/agp/hp-agp.c
@@ -476,7 +476,6 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
 {
 	acpi_handle handle, parent;
 	acpi_status status;
-	struct acpi_buffer buffer;
 	struct acpi_device_info *info;
 	u64 lba_hpa, sba_hpa, length;
 	int match;
@@ -488,13 +487,11 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
 	/* Look for an enclosing IOC scope and find its CSR space */
 	handle = obj;
 	do {
-		buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
-		status = acpi_get_object_info(handle, &buffer);
+		status = acpi_get_object_info(handle, &info);
 		if (ACPI_SUCCESS(status)) {
 			/* TBD check _CID also */
-			info = buffer.pointer;
-			info->hardware_id.value[sizeof(info->hardware_id)-1] = '\0';
-			match = (strcmp(info->hardware_id.value, "HWP0001") == 0);
+			info->hardware_id.string[sizeof(info->hardware_id.length)-1] = '\0';
+			match = (strcmp(info->hardware_id.string, "HWP0001") == 0);
 			kfree(info);
 			if (match) {
 				status = hp_acpi_csr_space(handle, &sba_hpa, &length);
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 1540e693d91..3cb56a049e2 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -46,6 +46,8 @@
 #define PCI_DEVICE_ID_INTEL_Q35_IG          0x29B2
 #define PCI_DEVICE_ID_INTEL_Q33_HB          0x29D0
 #define PCI_DEVICE_ID_INTEL_Q33_IG          0x29D2
+#define PCI_DEVICE_ID_INTEL_B43_HB          0x2E40
+#define PCI_DEVICE_ID_INTEL_B43_IG          0x2E42
 #define PCI_DEVICE_ID_INTEL_GM45_HB         0x2A40
 #define PCI_DEVICE_ID_INTEL_GM45_IG         0x2A42
 #define PCI_DEVICE_ID_INTEL_IGD_E_HB        0x2E00
@@ -60,6 +62,7 @@
 #define PCI_DEVICE_ID_INTEL_IGDNG_D_IG	    0x0042
 #define PCI_DEVICE_ID_INTEL_IGDNG_M_HB	    0x0044
 #define PCI_DEVICE_ID_INTEL_IGDNG_MA_HB	    0x0062
+#define PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB    0x006a
 #define PCI_DEVICE_ID_INTEL_IGDNG_M_IG	    0x0046
 
 /* cover 915 and 945 variants */
@@ -91,9 +94,11 @@
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G41_HB || \
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_B43_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_D_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_M_HB || \
-		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_MA_HB)
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_MA_HB || \
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB)
 
 extern int agp_memory_reserved;
 
@@ -804,23 +809,39 @@ static void intel_i830_setup_flush(void)
 	if (!intel_private.i8xx_page)
 		return;
 
-	/* make page uncached */
-	map_page_into_agp(intel_private.i8xx_page);
-
 	intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
 	if (!intel_private.i8xx_flush_page)
 		intel_i830_fini_flush();
 }
 
+static void
+do_wbinvd(void *null)
+{
+	wbinvd();
+}
+
+/* The chipset_flush interface needs to get data that has already been
+ * flushed out of the CPU all the way out to main memory, because the GPU
+ * doesn't snoop those buffers.
+ *
+ * The 8xx series doesn't have the same lovely interface for flushing the
+ * chipset write buffers that the later chips do. According to the 865
+ * specs, it's 64 octwords, or 1KB.  So, to get those previous things in
+ * that buffer out, we just fill 1KB and clflush it out, on the assumption
+ * that it'll push whatever was in there out.  It appears to work.
+ */
 static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
 {
 	unsigned int *pg = intel_private.i8xx_flush_page;
-	int i;
 
-	for (i = 0; i < 256; i += 2)
-		*(pg + i) = i;
+	memset(pg, 0, 1024);
 
-	wmb();
+	if (cpu_has_clflush) {
+		clflush_cache_range(pg, 1024);
+	} else {
+		if (on_each_cpu(do_wbinvd, NULL, 1) != 0)
+			printk(KERN_ERR "Timed out waiting for cache flush.\n");
+	}
 }
 
 /* The intel i830 automatically initializes the agp aperture during POST.
@@ -1142,12 +1163,6 @@ static int intel_i915_configure(void)
 
 	intel_i9xx_setup_flush();
 
-#ifdef USE_PCI_DMA_API 
-	if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(36)))
-		dev_err(&intel_private.pcidev->dev,
-			"set gfx device dma mask 36bit failed!\n");
-#endif
-
 	return 0;
 }
 
@@ -1341,9 +1356,11 @@ static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 	case PCI_DEVICE_ID_INTEL_Q45_HB:
 	case PCI_DEVICE_ID_INTEL_G45_HB:
 	case PCI_DEVICE_ID_INTEL_G41_HB:
+	case PCI_DEVICE_ID_INTEL_B43_HB:
 	case PCI_DEVICE_ID_INTEL_IGDNG_D_HB:
 	case PCI_DEVICE_ID_INTEL_IGDNG_M_HB:
 	case PCI_DEVICE_ID_INTEL_IGDNG_MA_HB:
+	case PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB:
 		*gtt_offset = *gtt_size = MB(2);
 		break;
 	default:
@@ -2335,6 +2352,8 @@ static const struct intel_driver_description {
 	    "Q45/Q43", NULL, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_G45_HB, PCI_DEVICE_ID_INTEL_G45_IG, 0,
 	    "G45/G43", NULL, &intel_i965_driver },
+	{ PCI_DEVICE_ID_INTEL_B43_HB, PCI_DEVICE_ID_INTEL_B43_IG, 0,
+	    "B43", NULL, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG, 0,
 	    "G41", NULL, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_IGDNG_D_HB, PCI_DEVICE_ID_INTEL_IGDNG_D_IG, 0,
@@ -2343,6 +2362,8 @@ static const struct intel_driver_description {
 	    "IGDNG/M", NULL, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_IGDNG_MA_HB, PCI_DEVICE_ID_INTEL_IGDNG_M_IG, 0,
 	    "IGDNG/MA", NULL, &intel_i965_driver },
+	{ PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB, PCI_DEVICE_ID_INTEL_IGDNG_M_IG, 0,
+	    "IGDNG/MC2", NULL, &intel_i965_driver },
 	{ 0, 0, 0, NULL, NULL, NULL }
 };
 
@@ -2434,6 +2455,11 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
 				&bridge->mode);
 	}
 
+	if (bridge->driver->mask_memory == intel_i965_mask_memory)
+		if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(36)))
+			dev_err(&intel_private.pcidev->dev,
+				"set gfx device dma mask 36bit failed!\n");
+
 	pci_set_drvdata(pdev, bridge);
 	return agp_add_bridge(bridge);
 }
@@ -2535,9 +2561,11 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_Q45_HB),
 	ID(PCI_DEVICE_ID_INTEL_G45_HB),
 	ID(PCI_DEVICE_ID_INTEL_G41_HB),
+	ID(PCI_DEVICE_ID_INTEL_B43_HB),
 	ID(PCI_DEVICE_ID_INTEL_IGDNG_D_HB),
 	ID(PCI_DEVICE_ID_INTEL_IGDNG_M_HB),
 	ID(PCI_DEVICE_ID_INTEL_IGDNG_MA_HB),
+	ID(PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB),
 	{ }
 };
 
diff --git a/drivers/char/agp/parisc-agp.c b/drivers/char/agp/parisc-agp.c
index 60ab75104da..1c129211302 100644
--- a/drivers/char/agp/parisc-agp.c
+++ b/drivers/char/agp/parisc-agp.c
@@ -217,7 +217,7 @@ static const struct agp_bridge_driver parisc_agp_driver = {
 	.configure		= parisc_agp_configure,
 	.fetch_size		= parisc_agp_fetch_size,
 	.tlb_flush		= parisc_agp_tlbflush,
-	.mask_memory		= parisc_agp_page_mask_memory,
+	.mask_memory		= parisc_agp_mask_memory,
 	.masks			= parisc_agp_masks,
 	.agp_enable		= parisc_agp_enable,
 	.cache_flush		= global_cache_flush,
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index 20ef1bf5e72..703959eba45 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -270,7 +270,7 @@ static void uninorth_agp_enable(struct agp_bridge_data *bridge, u32 mode)
 
 	if ((uninorth_rev >= 0x30) && (uninorth_rev <= 0x33)) {
 		/*
-		 * We need to to set REQ_DEPTH to 7 for U3 versions 1.0, 2.1,
+		 * We need to set REQ_DEPTH to 7 for U3 versions 1.0, 2.1,
 		 * 2.2 and 2.3, Darwin do so.
 		 */
 		if ((command >> AGPSTAT_RQ_DEPTH_SHIFT) > 7)
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index aaca40283be..4f568cb9af3 100644
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -393,7 +393,7 @@ static int apm_open(struct inode * inode, struct file * filp)
 	return as ? 0 : -ENOMEM;
 }
 
-static struct file_operations apm_bios_fops = {
+static const struct file_operations apm_bios_fops = {
 	.owner		= THIS_MODULE,
 	.read		= apm_read,
 	.poll		= apm_poll,
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
index 73a0765344b..fe2cb2f5db1 100644
--- a/drivers/char/applicom.c
+++ b/drivers/char/applicom.c
@@ -23,6 +23,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
diff --git a/drivers/char/bfin-otp.c b/drivers/char/bfin-otp.c
index 0a01329451e..836d4f0a876 100644
--- a/drivers/char/bfin-otp.c
+++ b/drivers/char/bfin-otp.c
@@ -1,8 +1,7 @@
 /*
  * Blackfin On-Chip OTP Memory Interface
- *  Supports BF52x/BF54x
  *
- * Copyright 2007-2008 Analog Devices Inc.
+ * Copyright 2007-2009 Analog Devices Inc.
  *
  * Enter bugs at http://blackfin.uclinux.org/
  *
@@ -17,8 +16,10 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/types.h>
+#include <mtd/mtd-abi.h>
 
 #include <asm/blackfin.h>
+#include <asm/bfrom.h>
 #include <asm/uaccess.h>
 
 #define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__, __LINE__, ## args)
@@ -30,39 +31,6 @@
 
 static DEFINE_MUTEX(bfin_otp_lock);
 
-/* OTP Boot ROM functions */
-#define _BOOTROM_OTP_COMMAND           0xEF000018
-#define _BOOTROM_OTP_READ              0xEF00001A
-#define _BOOTROM_OTP_WRITE             0xEF00001C
-
-static u32 (* const otp_command)(u32 command, u32 value) = (void *)_BOOTROM_OTP_COMMAND;
-static u32 (* const otp_read)(u32 page, u32 flags, u64 *page_content) = (void *)_BOOTROM_OTP_READ;
-static u32 (* const otp_write)(u32 page, u32 flags, u64 *page_content) = (void *)_BOOTROM_OTP_WRITE;
-
-/* otp_command(): defines for "command" */
-#define OTP_INIT             0x00000001
-#define OTP_CLOSE            0x00000002
-
-/* otp_{read,write}(): defines for "flags" */
-#define OTP_LOWER_HALF       0x00000000 /* select upper/lower 64-bit half (bit 0) */
-#define OTP_UPPER_HALF       0x00000001
-#define OTP_NO_ECC           0x00000010 /* do not use ECC */
-#define OTP_LOCK             0x00000020 /* sets page protection bit for page */
-#define OTP_ACCESS_READ      0x00001000
-#define OTP_ACCESS_READWRITE 0x00002000
-
-/* Return values for all functions */
-#define OTP_SUCCESS          0x00000000
-#define OTP_MASTER_ERROR     0x001
-#define OTP_WRITE_ERROR      0x003
-#define OTP_READ_ERROR       0x005
-#define OTP_ACC_VIO_ERROR    0x009
-#define OTP_DATA_MULT_ERROR  0x011
-#define OTP_ECC_MULT_ERROR   0x021
-#define OTP_PREV_WR_ERROR    0x041
-#define OTP_DATA_SB_WARN     0x100
-#define OTP_ECC_SB_WARN      0x200
-
 /**
  *	bfin_otp_read - Read OTP pages
  *
@@ -86,9 +54,11 @@ static ssize_t bfin_otp_read(struct file *file, char __user *buff, size_t count,
 	page = *pos / (sizeof(u64) * 2);
 	while (bytes_done < count) {
 		flags = (*pos % (sizeof(u64) * 2) ? OTP_UPPER_HALF : OTP_LOWER_HALF);
-		stamp("processing page %i (%s)", page, (flags == OTP_UPPER_HALF ? "upper" : "lower"));
-		ret = otp_read(page, flags, &content);
+		stamp("processing page %i (0x%x:%s)", page, flags,
+			(flags & OTP_UPPER_HALF ? "upper" : "lower"));
+		ret = bfrom_OtpRead(page, flags, &content);
 		if (ret & OTP_MASTER_ERROR) {
+			stamp("error from otp: 0x%x", ret);
 			bytes_done = -EIO;
 			break;
 		}
@@ -96,7 +66,7 @@ static ssize_t bfin_otp_read(struct file *file, char __user *buff, size_t count,
 			bytes_done = -EFAULT;
 			break;
 		}
-		if (flags == OTP_UPPER_HALF)
+		if (flags & OTP_UPPER_HALF)
 			++page;
 		bytes_done += sizeof(content);
 		*pos += sizeof(content);
@@ -108,14 +78,53 @@ static ssize_t bfin_otp_read(struct file *file, char __user *buff, size_t count,
 }
 
 #ifdef CONFIG_BFIN_OTP_WRITE_ENABLE
+static bool allow_writes;
+
+/**
+ *	bfin_otp_init_timing - setup OTP timing parameters
+ *
+ *	Required before doing any write operation.  Algorithms from HRM.
+ */
+static u32 bfin_otp_init_timing(void)
+{
+	u32 tp1, tp2, tp3, timing;
+
+	tp1 = get_sclk() / 1000000;
+	tp2 = (2 * get_sclk() / 10000000) << 8;
+	tp3 = (0x1401) << 15;
+	timing = tp1 | tp2 | tp3;
+	if (bfrom_OtpCommand(OTP_INIT, timing))
+		return 0;
+
+	return timing;
+}
+
+/**
+ *	bfin_otp_deinit_timing - set timings to only allow reads
+ *
+ *	Should be called after all writes are done.
+ */
+static void bfin_otp_deinit_timing(u32 timing)
+{
+	/* mask bits [31:15] so that any attempts to write fail */
+	bfrom_OtpCommand(OTP_CLOSE, 0);
+	bfrom_OtpCommand(OTP_INIT, timing & ~(-1 << 15));
+	bfrom_OtpCommand(OTP_CLOSE, 0);
+}
+
 /**
- *	bfin_otp_write - Write OTP pages
+ *	bfin_otp_write - write OTP pages
  *
  *	All writes must be in half page chunks (half page == 64 bits).
  */
 static ssize_t bfin_otp_write(struct file *filp, const char __user *buff, size_t count, loff_t *pos)
 {
-	stampit();
+	ssize_t bytes_done;
+	u32 timing, page, base_flags, flags, ret;
+	u64 content;
+
+	if (!allow_writes)
+		return -EACCES;
 
 	if (count % sizeof(u64))
 		return -EMSGSIZE;
@@ -123,20 +132,96 @@ static ssize_t bfin_otp_write(struct file *filp, const char __user *buff, size_t
 	if (mutex_lock_interruptible(&bfin_otp_lock))
 		return -ERESTARTSYS;
 
-	/* need otp_init() documentation before this can be implemented */
+	stampit();
+
+	timing = bfin_otp_init_timing();
+	if (timing == 0) {
+		mutex_unlock(&bfin_otp_lock);
+		return -EIO;
+	}
+
+	base_flags = OTP_CHECK_FOR_PREV_WRITE;
+
+	bytes_done = 0;
+	page = *pos / (sizeof(u64) * 2);
+	while (bytes_done < count) {
+		flags = base_flags | (*pos % (sizeof(u64) * 2) ? OTP_UPPER_HALF : OTP_LOWER_HALF);
+		stamp("processing page %i (0x%x:%s) from %p", page, flags,
+			(flags & OTP_UPPER_HALF ? "upper" : "lower"), buff + bytes_done);
+		if (copy_from_user(&content, buff + bytes_done, sizeof(content))) {
+			bytes_done = -EFAULT;
+			break;
+		}
+		ret = bfrom_OtpWrite(page, flags, &content);
+		if (ret & OTP_MASTER_ERROR) {
+			stamp("error from otp: 0x%x", ret);
+			bytes_done = -EIO;
+			break;
+		}
+		if (flags & OTP_UPPER_HALF)
+			++page;
+		bytes_done += sizeof(content);
+		*pos += sizeof(content);
+	}
+
+	bfin_otp_deinit_timing(timing);
 
 	mutex_unlock(&bfin_otp_lock);
 
+	return bytes_done;
+}
+
+static long bfin_otp_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
+{
+	stampit();
+
+	switch (cmd) {
+	case OTPLOCK: {
+		u32 timing;
+		int ret = -EIO;
+
+		if (!allow_writes)
+			return -EACCES;
+
+		if (mutex_lock_interruptible(&bfin_otp_lock))
+			return -ERESTARTSYS;
+
+		timing = bfin_otp_init_timing();
+		if (timing) {
+			u32 otp_result = bfrom_OtpWrite(arg, OTP_LOCK, NULL);
+			stamp("locking page %lu resulted in 0x%x", arg, otp_result);
+			if (!(otp_result & OTP_MASTER_ERROR))
+				ret = 0;
+
+			bfin_otp_deinit_timing(timing);
+		}
+
+		mutex_unlock(&bfin_otp_lock);
+
+		return ret;
+	}
+
+	case MEMLOCK:
+		allow_writes = false;
+		return 0;
+
+	case MEMUNLOCK:
+		allow_writes = true;
+		return 0;
+	}
+
 	return -EINVAL;
 }
 #else
 # define bfin_otp_write NULL
+# define bfin_otp_ioctl NULL
 #endif
 
-static struct file_operations bfin_otp_fops = {
-	.owner    = THIS_MODULE,
-	.read     = bfin_otp_read,
-	.write    = bfin_otp_write,
+static const struct file_operations bfin_otp_fops = {
+	.owner          = THIS_MODULE,
+	.unlocked_ioctl = bfin_otp_ioctl,
+	.read           = bfin_otp_read,
+	.write          = bfin_otp_write,
 };
 
 static struct miscdevice bfin_otp_misc_device = {
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 2dafc2da064..4254457d391 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -11,7 +11,7 @@
  * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
  * Modified and maintained by Marcio Saito <marcio@cyclades.com>.
  *
- * Copyright (C) 2007 Jiri Slaby <jirislaby@gmail.com>
+ * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com>
  *
  * Much of the design and some of the code came from serial.c
  * which was copyright (C) 1991, 1992  Linus Torvalds.  It was
@@ -19,577 +19,9 @@
  * and then fixed as suggested by Michael K. Johnson 12/12/92.
  * Converted to pci probing and cleaned up by Jiri Slaby.
  *
- * This version supports shared IRQ's (only for PCI boards).
- *
- * Prevent users from opening non-existing Z ports.
- *
- * Revision 2.3.2.8   2000/07/06 18:14:16 ivan
- * Fixed the PCI detection function to work properly on Alpha systems.
- * Implemented support for TIOCSERGETLSR ioctl.
- * Implemented full support for non-standard baud rates.
- *
- * Revision 2.3.2.7   2000/06/01 18:26:34 ivan
- * Request PLX I/O region, although driver doesn't use it, to avoid
- * problems with other drivers accessing it.
- * Removed count for on-board buffer characters in cy_chars_in_buffer
- * (Cyclades-Z only).
- *
- * Revision 2.3.2.6   2000/05/05 13:56:05 ivan
- * Driver now reports physical instead of virtual memory addresses.
- * Masks were added to some Cyclades-Z read accesses.
- * Implemented workaround for PLX9050 bug that would cause a system lockup
- * in certain systems, depending on the MMIO addresses allocated to the
- * board.
- * Changed the Tx interrupt programming in the CD1400 chips to boost up
- * performance (Cyclom-Y only).
- * Code is now compliant with the new module interface (module_[init|exit]).
- * Make use of the PCI helper functions to access PCI resources.
- * Did some code "housekeeping".
- *
- * Revision 2.3.2.5   2000/01/19 14:35:33 ivan
- * Fixed bug in cy_set_termios on CRTSCTS flag turnoff.
- *
- * Revision 2.3.2.4   2000/01/17 09:19:40 ivan
- * Fixed SMP locking in Cyclom-Y interrupt handler.
- *
- * Revision 2.3.2.3   1999/12/28 12:11:39 ivan
- * Added a new cyclades_card field called nports to allow the driver to
- * know the exact number of ports found by the Z firmware after its load;
- * RX buffer contention prevention logic on interrupt op mode revisited
- * (Cyclades-Z only);
- * Revisited printk's for Z debug;
- * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined;
- *
- * Revision 2.3.2.2   1999/10/01 11:27:43 ivan
- * Fixed bug in cyz_poll that would make all ports but port 0
- * unable to transmit/receive data (Cyclades-Z only);
- * Implemented logic to prevent the RX buffer from being stuck with data
- * due to a driver / firmware race condition in interrupt op mode
- * (Cyclades-Z only);
- * Fixed bug in block_til_ready logic that would lead to a system crash;
- * Revisited cy_close spinlock usage;
- *
- * Revision 2.3.2.1   1999/09/28 11:01:22 ivan
- * Revisited CONFIG_PCI conditional compilation for PCI board support;
- * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support;
- * _Major_ cleanup on the Cyclades-Z interrupt support code / logic;
- * Removed CTS handling from the driver -- this is now completely handled
- * by the firmware (Cyclades-Z only);
- * Flush RX on-board buffers on a port open (Cyclades-Z only);
- * Fixed handling of ASYNC_SPD_* TTY flags;
- * Module unload now unmaps all memory area allocated by ioremap;
- *
- * Revision 2.3.1.1   1999/07/15 16:45:53 ivan
- * Removed CY_PROC conditional compilation;
- * Implemented SMP-awareness for the driver;
- * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off]
- * functions;
- * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs
- * (irq=NN) as parameters (only for ISA boards);
- * Fixed bug in set_line_char that would prevent the Cyclades-Z
- * ports from being configured at speeds above 115.2Kbps;
- * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control
- * switching from working properly;
- * The driver now only prints IRQ info for the Cyclades-Z if it's
- * configured to work in interrupt mode;
- *
- * Revision 2.2.2.3   1999/06/28 11:13:29 ivan
- * Added support for interrupt mode operation for the Z cards;
- * Removed the driver inactivity control for the Z;
- * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when
- * the Z firmware is not loaded yet;
- * Replaced the "manual" Z Tx flush buffer by a call to a FW command of
- * same functionality;
- * Implemented workaround for IRQ setting loss on the PCI configuration
- * registers after a PCI bridge EEPROM reload (affects PLX9060 only);
- *
- * Revision 2.2.2.2  1999/05/14 17:18:15 ivan
- * /proc entry location changed to /proc/tty/driver/cyclades;
- * Added support to shared IRQ's (only for PCI boards);
- * Added support for Cobalt Qube2 systems;
- * IRQ [de]allocation scheme revisited;
- * BREAK implementation changed in order to make use of the 'break_ctl'
- * TTY facility;
- * Fixed typo in TTY structure field 'driver_name';
- * Included a PCI bridge reset and EEPROM reload in the board
- * initialization code (for both Y and Z series).
- *
- * Revision 2.2.2.1  1999/04/08 16:17:43 ivan
- * Fixed a bug in cy_wait_until_sent that was preventing the port to be
- * closed properly after a SIGINT;
- * Module usage counter scheme revisited;
- * Added support to the upcoming Y PCI boards (i.e., support to additional
- * PCI Device ID's).
- *
- * Revision 2.2.1.10 1999/01/20 16:14:29 ivan
- * Removed all unnecessary page-alignement operations in ioremap calls
- * (ioremap is currently safe for these operations).
- *
- * Revision 2.2.1.9  1998/12/30 18:18:30 ivan
- * Changed access to PLX PCI bridge registers from I/O to MMIO, in
- * order to make PLX9050-based boards work with certain motherboards.
- *
- * Revision 2.2.1.8  1998/11/13 12:46:20 ivan
- * cy_close function now resets (correctly) the tty->closing flag;
- * JIFFIES_DIFF macro fixed.
- *
- * Revision 2.2.1.7  1998/09/03 12:07:28 ivan
- * Fixed bug in cy_close function, which was not informing HW of
- * which port should have the reception disabled before doing so;
- * fixed Cyclom-8YoP hardware detection bug.
- *
- * Revision 2.2.1.6  1998/08/20 17:15:39 ivan
- * Fixed bug in cy_close function, which causes malfunction
- * of one of the first 4 ports when a higher port is closed
- * (Cyclom-Y only).
- *
- * Revision 2.2.1.5  1998/08/10 18:10:28 ivan
- * Fixed Cyclom-4Yo hardware detection bug.
- *
- * Revision 2.2.1.4  1998/08/04 11:02:50 ivan
- * /proc/cyclades implementation with great collaboration of
- * Marc Lewis <marc@blarg.net>;
- * cyy_interrupt was changed to avoid occurrence of kernel oopses
- * during PPP operation.
- *
- * Revision 2.2.1.3  1998/06/01 12:09:10 ivan
- * General code review in order to comply with 2.1 kernel standards;
- * data loss prevention for slow devices revisited (cy_wait_until_sent
- * was created);
- * removed conditional compilation for new/old PCI structure support
- * (now the driver only supports the new PCI structure).
- *
- * Revision 2.2.1.1  1998/03/19 16:43:12 ivan
- * added conditional compilation for new/old PCI structure support;
- * removed kernel series (2.0.x / 2.1.x) conditional compilation.
- *
- * Revision 2.1.1.3  1998/03/16 18:01:12 ivan
- * cleaned up the data loss fix;
- * fixed XON/XOFF handling once more (Cyclades-Z);
- * general review of the driver routines;
- * introduction of a mechanism to prevent data loss with slow
- * printers, by forcing a delay before closing the port.
- *
- * Revision 2.1.1.2  1998/02/17 16:50:00 ivan
- * fixed detection/handling of new CD1400 in Ye boards;
- * fixed XON/XOFF handling (Cyclades-Z);
- * fixed data loss caused by a premature port close;
- * introduction of a flag that holds the CD1400 version ID per port
- * (used by the CYGETCD1400VER new ioctl).
- *
- * Revision 2.1.1.1  1997/12/03 17:31:19 ivan
- * Code review for the module cleanup routine;
- * fixed RTS and DTR status report for new CD1400's in get_modem_info;
- * includes anonymous changes regarding signal_pending.
- *
- * Revision 2.1  1997/11/01 17:42:41 ivan
- * Changes in the driver to support Alpha systems (except 8Zo V_1);
- * BREAK fix for the Cyclades-Z boards;
- * driver inactivity control by FW implemented;
- * introduction of flag that allows driver to take advantage of
- * a special CD1400 feature related to HW flow control;
- * added support for the CD1400  rev. J (Cyclom-Y boards);
- * introduction of ioctls to:
- *  - control the rtsdtr_inv flag (Cyclom-Y);
- *  - control the rflow flag (Cyclom-Y);
- *  - adjust the polling interval (Cyclades-Z);
- *
- * Revision 1.36.4.33  1997/06/27 19:00:00  ivan
- * Fixes related to kernel version conditional
- * compilation.
- *
- * Revision 1.36.4.32  1997/06/14 19:30:00  ivan
- * Compatibility issues between kernels 2.0.x and
- * 2.1.x (mainly related to clear_bit function).
- *
- * Revision 1.36.4.31  1997/06/03 15:30:00  ivan
- * Changes to define the memory window according to the
- * board type.
- *
- * Revision 1.36.4.30  1997/05/16 15:30:00  daniel
- * Changes to support new cycladesZ boards.
- *
- * Revision 1.36.4.29  1997/05/12 11:30:00  daniel
- * Merge of Bentson's and Daniel's version 1.36.4.28.
- * Corrects bug in cy_detect_pci: check if there are more
- * ports than the number of static structs allocated.
- * Warning message during initialization if this driver is
- * used with the new generation of cycladesZ boards.  Those
- * will be supported only in next release of the driver.
- * Corrects bug in cy_detect_pci and cy_detect_isa that
- * returned wrong number of VALID boards, when a cyclomY
- * was found with no serial modules connected.
- * Changes to use current (2.1.x) kernel subroutine names
- * and created macros for compilation with 2.0.x kernel,
- * instead of the other way around.
- *
- * Revision 1.36.4.28  1997/05/?? ??:00:00  bentson
- * Change queue_task_irq_off to queue_task_irq.
- * The inline function queue_task_irq_off (tqueue.h)
- * was removed from latest releases of 2.1.x kernel.
- * Use of macro __init to mark the initialization
- * routines, so memory can be reused.
- * Also incorporate implementation of critical region
- * in function cleanup_module() created by anonymous
- * linuxer.
- *
- * Revision 1.36.4.28  1997/04/25 16:00:00  daniel
- * Change to support new firmware that solves DCD problem:
- * application could fail to receive SIGHUP signal when DCD
- * varying too fast.
- *
- * Revision 1.36.4.27  1997/03/26 10:30:00  daniel
- * Changed for support linux versions 2.1.X.
- * Backward compatible with linux versions 2.0.X.
- * Corrected illegal use of filler field in
- * CH_CTRL struct.
- * Deleted some debug messages.
- *
- * Revision 1.36.4.26  1997/02/27 12:00:00  daniel
- * Included check for NULL tty pointer in cyz_poll.
- *
- * Revision 1.36.4.25  1997/02/26 16:28:30  bentson
- * Bill Foster at Blarg! Online services noticed that
- * some of the switch elements of -Z modem control
- * lacked a closing "break;"
- *
- * Revision 1.36.4.24  1997/02/24 11:00:00  daniel
- * Changed low water threshold for buffer xmit_buf
- *
- * Revision 1.36.4.23  1996/12/02 21:50:16  bentson
- * Marcio provided fix to modem status fetch for -Z
- *
- * Revision 1.36.4.22  1996/10/28 22:41:17  bentson
- * improve mapping of -Z control page (thanks to Steve
- * Price <stevep@fa.tdktca.com> for help on this)
- *
- * Revision 1.36.4.21  1996/09/10 17:00:10  bentson
- * shift from CPU-bound to memcopy in cyz_polling operation
- *
- * Revision 1.36.4.20  1996/09/09 18:30:32  Bentson
- * Added support to set and report higher speeds.
- *
- * Revision 1.36.4.19c  1996/08/09 10:00:00  Marcio Saito
- * Some fixes in the HW flow control for the BETA release.
- * Don't try to register the IRQ.
- *
- * Revision 1.36.4.19  1996/08/08 16:23:18  Bentson
- * make sure "cyc" appears in all kernel messages; all soft interrupts
- * handled by same routine; recognize out-of-band reception; comment
- * out some diagnostic messages; leave RTS/CTS flow control to hardware;
- * fix race condition in -Z buffer management; only -Y needs to explicitly
- * flush chars; tidy up some startup messages;
- *
- * Revision 1.36.4.18  1996/07/25 18:57:31  bentson
- * shift MOD_INC_USE_COUNT location to match
- * serial.c; purge some diagnostic messages;
- *
- * Revision 1.36.4.17  1996/07/25 18:01:08  bentson
- * enable modem status messages and fetch & process them; note
- * time of last activity type for each port; set_line_char now
- * supports more than line 0 and treats 0 baud correctly;
- * get_modem_info senses rs_status;
- *
- * Revision 1.36.4.16  1996/07/20 08:43:15  bentson
- * barely works--now's time to turn on
- * more features 'til it breaks
- *
- * Revision 1.36.4.15  1996/07/19 22:30:06  bentson
- * check more -Z board status; shorten boot message
- *
- * Revision 1.36.4.14  1996/07/19 22:20:37  bentson
- * fix reference to ch_ctrl in startup; verify return
- * values from cyz_issue_cmd and cyz_update_channel;
- * more stuff to get modem control correct;
- *
- * Revision 1.36.4.13  1996/07/11 19:53:33  bentson
- * more -Z stuff folded in; re-order changes to put -Z stuff
- * after -Y stuff (to make changes clearer)
- *
- * Revision 1.36.4.12  1996/07/11 15:40:55  bentson
- * Add code to poll Cyclades-Z.  Add code to get & set RS-232 control.
- * Add code to send break.  Clear firmware ID word at startup (so
- * that other code won't talk to inactive board).
- *
- * Revision 1.36.4.11  1996/07/09 05:28:29  bentson
- * add code for -Z in set_line_char
- *
- * Revision 1.36.4.10  1996/07/08 19:28:37  bentson
- * fold more -Z stuff (or in some cases, error messages)
- * into driver; add text to "don't know what to do" messages.
- *
- * Revision 1.36.4.9  1996/07/08 18:38:38  bentson
- * moved compile-time flags near top of file; cosmetic changes
- * to narrow text (to allow 2-up printing); changed many declarations
- * to "static" to limit external symbols; shuffled code order to
- * coalesce -Y and -Z specific code, also to put internal functions
- * in order of tty_driver structure; added code to recognize -Z
- * ports (and for moment, do nothing or report error); add cy_startup
- * to parse boot command line for extra base addresses for ISA probes;
- *
- * Revision 1.36.4.8  1996/06/25 17:40:19  bentson
- * reorder some code, fix types of some vars (int vs. long),
- * add cy_setup to support user declared ISA addresses
- *
- * Revision 1.36.4.7  1996/06/21 23:06:18  bentson
- * dump ioctl based firmware load (it's now a user level
- * program); ensure uninitialzed ports cannot be used
- *
- * Revision 1.36.4.6  1996/06/20 23:17:19  bentson
- * rename vars and restructure some code
- *
- * Revision 1.36.4.5  1996/06/14 15:09:44  bentson
- * get right status back after boot load
- *
- * Revision 1.36.4.4  1996/06/13 19:51:44  bentson
- * successfully loads firmware
- *
- * Revision 1.36.4.3  1996/06/13 06:08:33  bentson
- * add more of the code for the boot/load ioctls
- *
- * Revision 1.36.4.2  1996/06/11 21:00:51  bentson
- * start to add Z functionality--starting with ioctl
- * for loading firmware
- *
- * Revision 1.36.4.1  1996/06/10 18:03:02  bentson
- * added code to recognize Z/PCI card at initialization; report
- * presence, but card is not initialized (because firmware needs
- * to be loaded)
- *
- * Revision 1.36.3.8  1996/06/07 16:29:00  bentson
- * starting minor number at zero; added missing verify_area
- * as noted by Heiko Eißfeldt <heiko@colossus.escape.de>
- *
- * Revision 1.36.3.7  1996/04/19 21:06:18  bentson
- * remove unneeded boot message & fix CLOCAL hardware flow
- * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>);
- * remove unused diagnostic statements; minor 0 is first;
- *
- * Revision 1.36.3.6  1996/03/13 13:21:17  marcio
- * The kernel function vremap (available only in later 1.3.xx kernels)
- * allows the access to memory addresses above the RAM. This revision
- * of the driver supports PCI boards below 1Mb (device id 0x100) and
- * above 1Mb (device id 0x101).
- *
- * Revision 1.36.3.5  1996/03/07 15:20:17  bentson
- * Some global changes to interrupt handling spilled into
- * this driver--mostly unused arguments in system function
- * calls.  Also added change by Marcio Saito which should
- * reduce lost interrupts at startup by fast processors.
- *
- * Revision 1.36.3.4  1995/11/13  20:45:10  bentson
- * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed
- * in 1.3.41 kernel to remove a possible race condition, extend
- * some error messages, and let the driver run as a loadable module
- * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a
- * possible race condition.
- * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing.
- *
- * Revision 1.36.3.3  1995/11/13  19:44:48  bentson
- * Changes by Linus Torvalds in 1.3.33 kernel distribution
- * required due to reordering of driver initialization.
- * Drivers are now initialized *after* memory management.
- *
- * Revision 1.36.3.2  1995/09/08  22:07:14  bentson
- * remove printk from ISR; fix typo
- *
- * Revision 1.36.3.1  1995/09/01  12:00:42  marcio
- * Minor fixes in the PCI board support. PCI function calls in
- * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan
- * <duncan@okay.com>. "bad serial count" message removed.
- *
- * Revision 1.36.3  1995/08/22  09:19:42  marcio
- * Cyclom-Y/PCI support added. Changes in the cy_init routine and
- * board initialization. Changes in the boot messages. The driver
- * supports up to 4 boards and 64 ports by default.
- *
- * Revision 1.36.1.4  1995/03/29  06:14:14  bentson
- * disambiguate between Cyclom-16Y and Cyclom-32Ye;
- *
- * Revision 1.36.1.3  1995/03/23  22:15:35  bentson
- * add missing break in modem control block in ioctl switch statement
- * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>);
- *
- * Revision 1.36.1.2  1995/03/22  19:16:22  bentson
- * make sure CTS flow control is set as soon as possible (thanks
- * to note from David Lambert <lambert@chesapeake.rps.slb.com>);
- *
- * Revision 1.36.1.1  1995/03/13  15:44:43  bentson
- * initialize defaults for receive threshold and stale data timeout;
- * cosmetic changes;
- *
- * Revision 1.36  1995/03/10  23:33:53  bentson
- * added support of chips 4-7 in 32 port Cyclom-Ye;
- * fix cy_interrupt pointer dereference problem
- * (Joe Portman <baron@aa.net>);
- * give better error response if open is attempted on non-existent port
- * (Zachariah Vaum <jchryslr@netcom.com>);
- * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>);
- * conditional compilation for -16Y on systems with fast, noisy bus;
- * comment out diagnostic print function;
- * cleaned up table of base addresses;
- * set receiver time-out period register to correct value,
- * set receive threshold to better default values,
- * set chip timer to more accurate 200 Hz ticking,
- * add code to monitor and modify receive parameters
- * (Rik Faith <faith@cs.unc.edu> Nick Simicich
- * <njs@scifi.emi.net>);
- *
- * Revision 1.35  1994/12/16  13:54:18  steffen
- * additional patch by Marcio Saito for board detection
- * Accidently left out in 1.34
- *
- * Revision 1.34  1994/12/10  12:37:12  steffen
- * This is the corrected version as suggested by Marcio Saito
- *
- * Revision 1.33  1994/12/01  22:41:18  bentson
- * add hooks to support more high speeds directly; add tytso
- * patch regarding CLOCAL wakeups
- *
- * Revision 1.32  1994/11/23  19:50:04  bentson
- * allow direct kernel control of higher signalling rates;
- * look for cards at additional locations
- *
- * Revision 1.31  1994/11/16  04:33:28  bentson
- * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com--
- * a problem in chars_in_buffer has been resolved by some
- * small changes;  this should yield smoother output
- *
- * Revision 1.30  1994/11/16  04:28:05  bentson
- * Fix from Corey Minyard, Internet: minyard@metronet.com,
- * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to
- * cy_hangup that appears to clear up much (all?) of the
- * DTR glitches; also he's added/cleaned-up diagnostic messages
- *
- * Revision 1.29  1994/11/16  04:16:07  bentson
- * add change proposed by Ralph Sims, ralphs@halcyon.com, to
- * operate higher speeds in same way as other serial ports;
- * add more serial ports (for up to two 16-port muxes).
- *
- * Revision 1.28  1994/11/04  00:13:16  root
- * turn off diagnostic messages
- *
- * Revision 1.27  1994/11/03  23:46:37  root
- * bunch of changes to bring driver into greater conformance
- * with the serial.c driver (looking for missed fixes)
- *
- * Revision 1.26  1994/11/03  22:40:36  root
- * automatic interrupt probing fixed.
- *
- * Revision 1.25  1994/11/03  20:17:02  root
- * start to implement auto-irq
- *
- * Revision 1.24  1994/11/03  18:01:55  root
- * still working on modem signals--trying not to drop DTR
- * during the getty/login processes
- *
- * Revision 1.23  1994/11/03  17:51:36  root
- * extend baud rate support; set receive threshold as function
- * of baud rate; fix some problems with RTS/CTS;
- *
- * Revision 1.22  1994/11/02  18:05:35  root
- * changed arguments to udelay to type long to get
- * delays to be of correct duration
- *
- * Revision 1.21  1994/11/02  17:37:30  root
- * employ udelay (after calibrating loops_per_second earlier
- * in init/main.c) instead of using home-grown delay routines
- *
- * Revision 1.20  1994/11/02  03:11:38  root
- * cy_chars_in_buffer forces a return value of 0 to let
- * login work (don't know why it does); some functions
- * that were returning EFAULT, now executes the code;
- * more work on deciding when to disable xmit interrupts;
- *
- * Revision 1.19  1994/11/01  20:10:14  root
- * define routine to start transmission interrupts (by enabling
- * transmit interrupts); directly enable/disable modem interrupts;
- *
- * Revision 1.18  1994/11/01  18:40:45  bentson
- * Don't always enable transmit interrupts in startup; interrupt on
- * TxMpty instead of TxRdy to help characters get out before shutdown;
- * restructure xmit interrupt to check for chars first and quit if
- * none are ready to go; modem status (MXVRx) is upright, _not_ inverted
- * (to my view);
- *
- * Revision 1.17  1994/10/30  04:39:45  bentson
- * rename serial_driver and callout_driver to cy_serial_driver and
- * cy_callout_driver to avoid linkage interference; initialize
- * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port
- * from cyclades_port structure; add paranoia check to cy_close;
- *
- * Revision 1.16  1994/10/30  01:14:33  bentson
- * change major numbers; add some _early_ return statements;
- *
- * Revision 1.15  1994/10/29  06:43:15  bentson
- * final tidying up for clean compile;  enable some error reporting
- *
- * Revision 1.14  1994/10/28  20:30:22  Bentson
- * lots of changes to drag the driver towards the new tty_io
- * structures and operation.  not expected to work, but may
- * compile cleanly.
- *
- * Revision 1.13  1994/07/21  23:08:57  Bentson
- * add some diagnostic cruft; support 24 lines (for testing
- * both -8Y and -16Y cards; be more thorough in servicing all
- * chips during interrupt; add "volatile" a few places to
- * circumvent compiler optimizations; fix base & offset
- * computations in block_til_ready (was causing chip 0 to
- * stop operation)
- *
- * Revision 1.12  1994/07/19  16:42:11  Bentson
- * add some hackery for kernel version 1.1.8; expand
- * error messages; refine timing for delay loops and
- * declare loop params volatile
- *
- * Revision 1.11  1994/06/11  21:53:10  bentson
- * get use of save_car right in transmit interrupt service
- *
- * Revision 1.10.1.1  1994/06/11  21:31:18  bentson
- * add some diagnostic printing; try to fix save_car stuff
- *
- * Revision 1.10  1994/06/11  20:36:08  bentson
- * clean up compiler warnings
- *
- * Revision 1.9  1994/06/11  19:42:46  bentson
- * added a bunch of code to support modem signalling
- *
- * Revision 1.8  1994/06/11  17:57:07  bentson
- * recognize break & parity error
- *
- * Revision 1.7  1994/06/05  05:51:34  bentson
- * Reorder baud table to be monotonic; add cli to CP; discard
- * incoming characters and status if the line isn't open; start to
- * fold code into cy_throttle; start to port get_serial_info,
- * set_serial_info, get_modem_info, set_modem_info, and send_break
- * from serial.c; expand cy_ioctl; relocate and expand config_setup;
- * get flow control characters from tty struct; invalidate ports w/o
- * hardware;
- *
- * Revision 1.6  1994/05/31  18:42:21  bentson
- * add a loop-breaker in the interrupt service routine;
- * note when port is initialized so that it can be shut
- * down under the right conditions; receive works without
- * any obvious errors
- *
- * Revision 1.5  1994/05/30  00:55:02  bentson
- * transmit works without obvious errors
- *
- * Revision 1.4  1994/05/27  18:46:27  bentson
- * incorporated more code from lib_y.c; can now print short
- * strings under interrupt control to port zero; seems to
- * select ports/channels/lines correctly
- *
- * Revision 1.3  1994/05/25  22:12:44  bentson
- * shifting from multi-port on a card to proper multiplexor
- * data structures;  added skeletons of most routines
- *
- * Revision 1.2  1994/05/19  13:21:43  bentson
- * start to crib from other sources
- *
  */
 
-#define CY_VERSION	"2.5"
+#define CY_VERSION	"2.6"
 
 /* If you need to install more boards than NR_CARDS, change the constant
    in the definition below. No other change is necessary to support up to
@@ -648,9 +80,7 @@
 #include <linux/firmware.h>
 #include <linux/device.h>
 
-#include <asm/system.h>
 #include <linux/io.h>
-#include <asm/irq.h>
 #include <linux/uaccess.h>
 
 #include <linux/kernel.h>
@@ -660,13 +90,11 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 
-static void cy_throttle(struct tty_struct *tty);
 static void cy_send_xchar(struct tty_struct *tty, char ch);
 
 #ifndef SERIAL_XMIT_SIZE
 #define	SERIAL_XMIT_SIZE	(min(PAGE_SIZE, 4096))
 #endif
-#define WAKEUP_CHARS		256
 
 #define STD_COM_FLAGS (0)
 
@@ -756,25 +184,25 @@ static int cy_next_channel;	/* next minor available */
  *                                               HI            VHI
  *     20
  */
-static int baud_table[] = {
+static const int baud_table[] = {
 	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
 	1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
 	230400, 0
 };
 
-static char baud_co_25[] = {	/* 25 MHz clock option table */
+static const char baud_co_25[] = {	/* 25 MHz clock option table */
 	/* value =>    00    01   02    03    04 */
 	/* divide by    8    32   128   512  2048 */
 	0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
 	0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 };
 
-static char baud_bpr_25[] = {	/* 25 MHz baud rate period table */
+static const char baud_bpr_25[] = {	/* 25 MHz baud rate period table */
 	0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
 	0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
 };
 
-static char baud_co_60[] = {	/* 60 MHz clock option table (CD1400 J) */
+static const char baud_co_60[] = {	/* 60 MHz clock option table (CD1400 J) */
 	/* value =>    00    01   02    03    04 */
 	/* divide by    8    32   128   512  2048 */
 	0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
@@ -782,13 +210,13 @@ static char baud_co_60[] = {	/* 60 MHz clock option table (CD1400 J) */
 	0x00
 };
 
-static char baud_bpr_60[] = {	/* 60 MHz baud rate period table (CD1400 J) */
+static const char baud_bpr_60[] = {	/* 60 MHz baud rate period table (CD1400 J) */
 	0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
 	0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
 	0x21
 };
 
-static char baud_cor3[] = {	/* receive threshold */
+static const char baud_cor3[] = {	/* receive threshold */
 	0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
 	0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
 	0x07
@@ -805,7 +233,7 @@ static char baud_cor3[] = {	/* receive threshold */
  * cables.
  */
 
-static char rflow_thr[] = {	/* rflow threshold */
+static const char rflow_thr[] = {	/* rflow threshold */
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
 	0x0a
@@ -814,7 +242,7 @@ static char rflow_thr[] = {	/* rflow threshold */
 /*  The Cyclom-Ye has placed the sequential chips in non-sequential
  *  address order.  This look-up table overcomes that problem.
  */
-static int cy_chip_offset[] = { 0x0000,
+static const unsigned int cy_chip_offset[] = { 0x0000,
 	0x0400,
 	0x0800,
 	0x0C00,
@@ -827,7 +255,7 @@ static int cy_chip_offset[] = { 0x0000,
 /* PCI related definitions */
 
 #ifdef CONFIG_PCI
-static struct pci_device_id cy_pci_dev_id[] __devinitdata = {
+static const struct pci_device_id cy_pci_dev_id[] = {
 	/* PCI < 1Mb */
 	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
 	/* PCI > 1Mb */
@@ -850,7 +278,7 @@ MODULE_DEVICE_TABLE(pci, cy_pci_dev_id);
 #endif
 
 static void cy_start(struct tty_struct *);
-static void set_line_char(struct cyclades_port *);
+static void cy_set_line_char(struct cyclades_port *, struct tty_struct *);
 static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32);
 #ifdef CONFIG_ISA
 static unsigned detect_isa_irq(void __iomem *);
@@ -869,6 +297,20 @@ static void cyz_rx_restart(unsigned long);
 static struct timer_list cyz_rx_full_timer[NR_PORTS];
 #endif				/* CONFIG_CYZ_INTR */
 
+static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
+{
+	struct cyclades_card *card = port->card;
+
+	cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
+}
+
+static inline u8 cyy_readb(struct cyclades_port *port, u32 reg)
+{
+	struct cyclades_card *card = port->card;
+
+	return readb(port->u.cyy.base_addr + (reg << card->bus_index));
+}
+
 static inline bool cy_is_Z(struct cyclades_card *card)
 {
 	return card->num_chips == (unsigned int)-1;
@@ -893,7 +335,7 @@ static inline bool cyz_is_loaded(struct cyclades_card *card)
 }
 
 static inline int serial_paranoia_check(struct cyclades_port *info,
-		char *name, const char *routine)
+		const char *name, const char *routine)
 {
 #ifdef SERIAL_PARANOIA_CHECK
 	if (!info) {
@@ -909,7 +351,7 @@ static inline int serial_paranoia_check(struct cyclades_port *info,
 	}
 #endif
 	return 0;
-}				/* serial_paranoia_check */
+}
 
 /***********************************************************/
 /********* Start of block of Cyclom-Y specific code ********/
@@ -921,13 +363,14 @@ static inline int serial_paranoia_check(struct cyclades_port *info,
 
    This function is only called from inside spinlock-protected code.
  */
-static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index)
+static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index)
 {
+	void __iomem *ccr = base_addr + (CyCCR << index);
 	unsigned int i;
 
 	/* Check to see that the previous command has completed */
 	for (i = 0; i < 100; i++) {
-		if (readb(base_addr + (CyCCR << index)) == 0)
+		if (readb(ccr) == 0)
 			break;
 		udelay(10L);
 	}
@@ -937,10 +380,16 @@ static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index)
 		return -1;
 
 	/* Issue the new command */
-	cy_writeb(base_addr + (CyCCR << index), cmd);
+	cy_writeb(ccr, cmd);
 
 	return 0;
-}				/* cyy_issue_cmd */
+}
+
+static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd)
+{
+	return __cyy_issue_cmd(port->u.cyy.base_addr, cmd,
+			port->card->bus_index);
+}
 
 #ifdef CONFIG_ISA
 /* ISA interrupt detection code */
@@ -960,12 +409,12 @@ static unsigned detect_isa_irq(void __iomem *address)
 
 	irqs = probe_irq_on();
 	/* Wait ... */
-	udelay(5000L);
+	msleep(5);
 
 	/* Enable the Tx interrupts on the CD1400 */
 	local_irq_save(flags);
 	cy_writeb(address + (CyCAR << index), 0);
-	cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);
+	__cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);
 
 	cy_writeb(address + (CyCAR << index), 0);
 	cy_writeb(address + (CySRER << index),
@@ -973,7 +422,7 @@ static unsigned detect_isa_irq(void __iomem *address)
 	local_irq_restore(flags);
 
 	/* Wait ... */
-	udelay(5000L);
+	msleep(5);
 
 	/* Check which interrupt is in use */
 	irq = probe_irq_off(irqs);
@@ -999,7 +448,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 	struct cyclades_port *info;
 	struct tty_struct *tty;
 	int len, index = cinfo->bus_index;
-	u8 save_xir, channel, save_car, data, char_count;
+	u8 ivr, save_xir, channel, save_car, data, char_count;
 
 #ifdef CY_DEBUG_INTERRUPTS
 	printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
@@ -1008,26 +457,25 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 	save_xir = readb(base_addr + (CyRIR << index));
 	channel = save_xir & CyIRChannel;
 	info = &cinfo->ports[channel + chip * 4];
-	save_car = readb(base_addr + (CyCAR << index));
-	cy_writeb(base_addr + (CyCAR << index), save_xir);
+	save_car = cyy_readb(info, CyCAR);
+	cyy_writeb(info, CyCAR, save_xir);
+	ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
 
+	tty = tty_port_tty_get(&info->port);
 	/* if there is nowhere to put the data, discard it */
-	if (info->port.tty == NULL) {
-		if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) ==
-				CyIVRRxEx) {	/* exception */
-			data = readb(base_addr + (CyRDSR << index));
+	if (tty == NULL) {
+		if (ivr == CyIVRRxEx) {	/* exception */
+			data = cyy_readb(info, CyRDSR);
 		} else {	/* normal character reception */
-			char_count = readb(base_addr + (CyRDCR << index));
+			char_count = cyy_readb(info, CyRDCR);
 			while (char_count--)
-				data = readb(base_addr + (CyRDSR << index));
+				data = cyy_readb(info, CyRDSR);
 		}
 		goto end;
 	}
 	/* there is an open port for this data */
-	tty = info->port.tty;
-	if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) ==
-			CyIVRRxEx) {	/* exception */
-		data = readb(base_addr + (CyRDSR << index));
+	if (ivr == CyIVRRxEx) {	/* exception */
+		data = cyy_readb(info, CyRDSR);
 
 		/* For statistics only */
 		if (data & CyBREAK)
@@ -1041,28 +489,29 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 
 		if (data & info->ignore_status_mask) {
 			info->icount.rx++;
+			tty_kref_put(tty);
 			return;
 		}
 		if (tty_buffer_request_room(tty, 1)) {
 			if (data & info->read_status_mask) {
 				if (data & CyBREAK) {
 					tty_insert_flip_char(tty,
-						readb(base_addr + (CyRDSR <<
-							index)), TTY_BREAK);
+						cyy_readb(info, CyRDSR),
+						TTY_BREAK);
 					info->icount.rx++;
 					if (info->port.flags & ASYNC_SAK)
 						do_SAK(tty);
 				} else if (data & CyFRAME) {
 					tty_insert_flip_char(tty,
-						readb(base_addr + (CyRDSR <<
-							index)), TTY_FRAME);
+						cyy_readb(info, CyRDSR),
+						TTY_FRAME);
 					info->icount.rx++;
 					info->idle_stats.frame_errs++;
 				} else if (data & CyPARITY) {
 					/* Pieces of seven... */
 					tty_insert_flip_char(tty,
-						readb(base_addr + (CyRDSR <<
-							index)), TTY_PARITY);
+						cyy_readb(info, CyRDSR),
+						TTY_PARITY);
 					info->icount.rx++;
 					info->idle_stats.parity_errs++;
 				} else if (data & CyOVERRUN) {
@@ -1074,8 +523,8 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 					   the next incoming character.
 					 */
 					tty_insert_flip_char(tty,
-						readb(base_addr + (CyRDSR <<
-							index)), TTY_FRAME);
+						cyy_readb(info, CyRDSR),
+						TTY_FRAME);
 					info->icount.rx++;
 					info->idle_stats.overruns++;
 				/* These two conditions may imply */
@@ -1099,7 +548,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 		}
 	} else {	/* normal character reception */
 		/* load # chars available from the chip */
-		char_count = readb(base_addr + (CyRDCR << index));
+		char_count = cyy_readb(info, CyRDCR);
 
 #ifdef CY_ENABLE_MONITORING
 		++info->mon.int_count;
@@ -1110,7 +559,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 #endif
 		len = tty_buffer_request_room(tty, char_count);
 		while (len--) {
-			data = readb(base_addr + (CyRDSR << index));
+			data = cyy_readb(info, CyRDSR);
 			tty_insert_flip_char(tty, data, TTY_NORMAL);
 			info->idle_stats.recv_bytes++;
 			info->icount.rx++;
@@ -1121,16 +570,18 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 		info->idle_stats.recv_idle = jiffies;
 	}
 	tty_schedule_flip(tty);
+	tty_kref_put(tty);
 end:
 	/* end of service */
-	cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f);
-	cy_writeb(base_addr + (CyCAR << index), save_car);
+	cyy_writeb(info, CyRIR, save_xir & 0x3f);
+	cyy_writeb(info, CyCAR, save_car);
 }
 
 static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 		void __iomem *base_addr)
 {
 	struct cyclades_port *info;
+	struct tty_struct *tty;
 	int char_count, index = cinfo->bus_index;
 	u8 save_xir, channel, save_car, outch;
 
@@ -1154,9 +605,9 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 		goto end;
 	}
 	info = &cinfo->ports[channel + chip * 4];
-	if (info->port.tty == NULL) {
-		cy_writeb(base_addr + (CySRER << index),
-			  readb(base_addr + (CySRER << index)) & ~CyTxRdy);
+	tty = tty_port_tty_get(&info->port);
+	if (tty == NULL) {
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
 		goto end;
 	}
 
@@ -1165,7 +616,7 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 
 	if (info->x_char) {	/* send special char */
 		outch = info->x_char;
-		cy_writeb(base_addr + (CyTDR << index), outch);
+		cyy_writeb(info, CyTDR, outch);
 		char_count--;
 		info->icount.tx++;
 		info->x_char = 0;
@@ -1173,14 +624,14 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 
 	if (info->breakon || info->breakoff) {
 		if (info->breakon) {
-			cy_writeb(base_addr + (CyTDR << index), 0);
-			cy_writeb(base_addr + (CyTDR << index), 0x81);
+			cyy_writeb(info, CyTDR, 0);
+			cyy_writeb(info, CyTDR, 0x81);
 			info->breakon = 0;
 			char_count -= 2;
 		}
 		if (info->breakoff) {
-			cy_writeb(base_addr + (CyTDR << index), 0);
-			cy_writeb(base_addr + (CyTDR << index), 0x83);
+			cyy_writeb(info, CyTDR, 0);
+			cyy_writeb(info, CyTDR, 0x83);
 			info->breakoff = 0;
 			char_count -= 2;
 		}
@@ -1188,27 +639,23 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 
 	while (char_count-- > 0) {
 		if (!info->xmit_cnt) {
-			if (readb(base_addr + (CySRER << index)) & CyTxMpty) {
-				cy_writeb(base_addr + (CySRER << index),
-					readb(base_addr + (CySRER << index)) &
-						~CyTxMpty);
+			if (cyy_readb(info, CySRER) & CyTxMpty) {
+				cyy_writeb(info, CySRER,
+					cyy_readb(info, CySRER) & ~CyTxMpty);
 			} else {
-				cy_writeb(base_addr + (CySRER << index),
-					(readb(base_addr + (CySRER << index)) &
-						~CyTxRdy) | CyTxMpty);
+				cyy_writeb(info, CySRER, CyTxMpty |
+					(cyy_readb(info, CySRER) & ~CyTxRdy));
 			}
 			goto done;
 		}
 		if (info->port.xmit_buf == NULL) {
-			cy_writeb(base_addr + (CySRER << index),
-				readb(base_addr + (CySRER << index)) &
-					~CyTxRdy);
+			cyy_writeb(info, CySRER,
+				cyy_readb(info, CySRER) & ~CyTxRdy);
 			goto done;
 		}
-		if (info->port.tty->stopped || info->port.tty->hw_stopped) {
-			cy_writeb(base_addr + (CySRER << index),
-				readb(base_addr + (CySRER << index)) &
-					~CyTxRdy);
+		if (tty->stopped || tty->hw_stopped) {
+			cyy_writeb(info, CySRER,
+				cyy_readb(info, CySRER) & ~CyTxRdy);
 			goto done;
 		}
 		/* Because the Embedded Transmit Commands have been enabled,
@@ -1225,15 +672,15 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 			info->xmit_cnt--;
 			info->xmit_tail = (info->xmit_tail + 1) &
 					(SERIAL_XMIT_SIZE - 1);
-			cy_writeb(base_addr + (CyTDR << index), outch);
+			cyy_writeb(info, CyTDR, outch);
 			info->icount.tx++;
 		} else {
 			if (char_count > 1) {
 				info->xmit_cnt--;
 				info->xmit_tail = (info->xmit_tail + 1) &
 					(SERIAL_XMIT_SIZE - 1);
-				cy_writeb(base_addr + (CyTDR << index), outch);
-				cy_writeb(base_addr + (CyTDR << index), 0);
+				cyy_writeb(info, CyTDR, outch);
+				cyy_writeb(info, CyTDR, 0);
 				info->icount.tx++;
 				char_count--;
 			}
@@ -1241,17 +688,19 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
 	}
 
 done:
-	tty_wakeup(info->port.tty);
+	tty_wakeup(tty);
+	tty_kref_put(tty);
 end:
 	/* end of service */
-	cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f);
-	cy_writeb(base_addr + (CyCAR << index), save_car);
+	cyy_writeb(info, CyTIR, save_xir & 0x3f);
+	cyy_writeb(info, CyCAR, save_car);
 }
 
 static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
 		void __iomem *base_addr)
 {
 	struct cyclades_port *info;
+	struct tty_struct *tty;
 	int index = cinfo->bus_index;
 	u8 save_xir, channel, save_car, mdm_change, mdm_status;
 
@@ -1259,13 +708,14 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
 	save_xir = readb(base_addr + (CyMIR << index));
 	channel = save_xir & CyIRChannel;
 	info = &cinfo->ports[channel + chip * 4];
-	save_car = readb(base_addr + (CyCAR << index));
-	cy_writeb(base_addr + (CyCAR << index), save_xir);
+	save_car = cyy_readb(info, CyCAR);
+	cyy_writeb(info, CyCAR, save_xir);
 
-	mdm_change = readb(base_addr + (CyMISR << index));
-	mdm_status = readb(base_addr + (CyMSVR1 << index));
+	mdm_change = cyy_readb(info, CyMISR);
+	mdm_status = cyy_readb(info, CyMSVR1);
 
-	if (!info->port.tty)
+	tty = tty_port_tty_get(&info->port);
+	if (!tty)
 		goto end;
 
 	if (mdm_change & CyANY_DELTA) {
@@ -1279,35 +729,32 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
 		if (mdm_change & CyRI)
 			info->icount.rng++;
 
-		wake_up_interruptible(&info->delta_msr_wait);
+		wake_up_interruptible(&info->port.delta_msr_wait);
 	}
 
 	if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) {
-		if (!(mdm_status & CyDCD)) {
-			tty_hangup(info->port.tty);
-			info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
-		}
-		wake_up_interruptible(&info->port.open_wait);
+		if (mdm_status & CyDCD)
+			wake_up_interruptible(&info->port.open_wait);
+		else
+			tty_hangup(tty);
 	}
 	if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) {
-		if (info->port.tty->hw_stopped) {
+		if (tty->hw_stopped) {
 			if (mdm_status & CyCTS) {
 				/* cy_start isn't used
 				   because... !!! */
-				info->port.tty->hw_stopped = 0;
-				cy_writeb(base_addr + (CySRER << index),
-					readb(base_addr + (CySRER << index)) |
-						CyTxRdy);
-				tty_wakeup(info->port.tty);
+				tty->hw_stopped = 0;
+				cyy_writeb(info, CySRER,
+					cyy_readb(info, CySRER) | CyTxRdy);
+				tty_wakeup(tty);
 			}
 		} else {
 			if (!(mdm_status & CyCTS)) {
 				/* cy_stop isn't used
 				   because ... !!! */
-				info->port.tty->hw_stopped = 1;
-				cy_writeb(base_addr + (CySRER << index),
-					readb(base_addr + (CySRER << index)) &
-						~CyTxRdy);
+				tty->hw_stopped = 1;
+				cyy_writeb(info, CySRER,
+					cyy_readb(info, CySRER) & ~CyTxRdy);
 			}
 		}
 	}
@@ -1315,10 +762,11 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
 	}
 	if (mdm_change & CyRI) {
 	}*/
+	tty_kref_put(tty);
 end:
 	/* end of service */
-	cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f);
-	cy_writeb(base_addr + (CyCAR << index), save_car);
+	cyy_writeb(info, CyMIR, save_xir & 0x3f);
+	cyy_writeb(info, CyCAR, save_car);
 }
 
 /* The real interrupt service routine is called
@@ -1389,6 +837,56 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }				/* cyy_interrupt */
 
+static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set,
+		unsigned int clear)
+{
+	struct cyclades_card *card = info->card;
+	int channel = info->line - card->first_line;
+	u32 rts, dtr, msvrr, msvrd;
+
+	channel &= 0x03;
+
+	if (info->rtsdtr_inv) {
+		msvrr = CyMSVR2;
+		msvrd = CyMSVR1;
+		rts = CyDTR;
+		dtr = CyRTS;
+	} else {
+		msvrr = CyMSVR1;
+		msvrd = CyMSVR2;
+		rts = CyRTS;
+		dtr = CyDTR;
+	}
+	if (set & TIOCM_RTS) {
+		cyy_writeb(info, CyCAR, channel);
+		cyy_writeb(info, msvrr, rts);
+	}
+	if (clear & TIOCM_RTS) {
+		cyy_writeb(info, CyCAR, channel);
+		cyy_writeb(info, msvrr, ~rts);
+	}
+	if (set & TIOCM_DTR) {
+		cyy_writeb(info, CyCAR, channel);
+		cyy_writeb(info, msvrd, dtr);
+#ifdef CY_DEBUG_DTR
+		printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
+		printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
+			cyy_readb(info, CyMSVR1),
+			cyy_readb(info, CyMSVR2));
+#endif
+	}
+	if (clear & TIOCM_DTR) {
+		cyy_writeb(info, CyCAR, channel);
+		cyy_writeb(info, msvrd, ~dtr);
+#ifdef CY_DEBUG_DTR
+		printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
+		printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
+			cyy_readb(info, CyMSVR1),
+			cyy_readb(info, CyMSVR2));
+#endif
+	}
+}
+
 /***********************************************************/
 /********* End of block of Cyclom-Y specific code **********/
 /******** Start of block of Cyclades-Z specific code *******/
@@ -1398,15 +896,9 @@ static int
 cyz_fetch_msg(struct cyclades_card *cinfo,
 		__u32 *channel, __u8 *cmd, __u32 *param)
 {
-	struct FIRM_ID __iomem *firm_id;
-	struct ZFW_CTRL __iomem *zfw_ctrl;
-	struct BOARD_CTRL __iomem *board_ctrl;
+	struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
 	unsigned long loc_doorbell;
 
-	firm_id = cinfo->base_addr + ID_ADDRESS;
-	zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
-	board_ctrl = &zfw_ctrl->board_ctrl;
-
 	loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell);
 	if (loc_doorbell) {
 		*cmd = (char)(0xff & loc_doorbell);
@@ -1422,19 +914,13 @@ static int
 cyz_issue_cmd(struct cyclades_card *cinfo,
 		__u32 channel, __u8 cmd, __u32 param)
 {
-	struct FIRM_ID __iomem *firm_id;
-	struct ZFW_CTRL __iomem *zfw_ctrl;
-	struct BOARD_CTRL __iomem *board_ctrl;
+	struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
 	__u32 __iomem *pci_doorbell;
 	unsigned int index;
 
-	firm_id = cinfo->base_addr + ID_ADDRESS;
 	if (!cyz_is_loaded(cinfo))
 		return -1;
 
-	zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
-	board_ctrl = &zfw_ctrl->board_ctrl;
-
 	index = 0;
 	pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell;
 	while ((readl(pci_doorbell) & 0xff) != 0) {
@@ -1449,11 +935,10 @@ cyz_issue_cmd(struct cyclades_card *cinfo,
 	return 0;
 }				/* cyz_issue_cmd */
 
-static void cyz_handle_rx(struct cyclades_port *info,
-		struct BUF_CTRL __iomem *buf_ctrl)
+static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
 {
+	struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
 	struct cyclades_card *cinfo = info->card;
-	struct tty_struct *tty = info->port.tty;
 	unsigned int char_count;
 	int len;
 #ifdef BLOCKMOVE
@@ -1542,11 +1027,10 @@ static void cyz_handle_rx(struct cyclades_port *info,
 	}
 }
 
-static void cyz_handle_tx(struct cyclades_port *info,
-		struct BUF_CTRL __iomem *buf_ctrl)
+static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty)
 {
+	struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
 	struct cyclades_card *cinfo = info->card;
-	struct tty_struct *tty = info->port.tty;
 	u8 data;
 	unsigned int char_count;
 #ifdef BLOCKMOVE
@@ -1621,34 +1105,24 @@ ztxdone:
 
 static void cyz_handle_cmd(struct cyclades_card *cinfo)
 {
+	struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
 	struct tty_struct *tty;
 	struct cyclades_port *info;
-	static struct FIRM_ID __iomem *firm_id;
-	static struct ZFW_CTRL __iomem *zfw_ctrl;
-	static struct BOARD_CTRL __iomem *board_ctrl;
-	static struct CH_CTRL __iomem *ch_ctrl;
-	static struct BUF_CTRL __iomem *buf_ctrl;
 	__u32 channel, param, fw_ver;
 	__u8 cmd;
 	int special_count;
 	int delta_count;
 
-	firm_id = cinfo->base_addr + ID_ADDRESS;
-	zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
-	board_ctrl = &zfw_ctrl->board_ctrl;
 	fw_ver = readl(&board_ctrl->fw_version);
 
 	while (cyz_fetch_msg(cinfo, &channel, &cmd, &param) == 1) {
 		special_count = 0;
 		delta_count = 0;
 		info = &cinfo->ports[channel];
-		tty = info->port.tty;
+		tty = tty_port_tty_get(&info->port);
 		if (tty == NULL)
 			continue;
 
-		ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
-		buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
-
 		switch (cmd) {
 		case C_CM_PR_ERROR:
 			tty_insert_flip_char(tty, 0, TTY_PARITY);
@@ -1669,15 +1143,12 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
 			info->icount.dcd++;
 			delta_count++;
 			if (info->port.flags & ASYNC_CHECK_CD) {
-				if ((fw_ver > 241 ? ((u_long) param) :
-						readl(&ch_ctrl->rs_status)) &
-						C_RS_DCD) {
+				u32 dcd = fw_ver > 241 ? param :
+					readl(&info->u.cyz.ch_ctrl->rs_status);
+				if (dcd & C_RS_DCD)
 					wake_up_interruptible(&info->port.open_wait);
-				} else {
-					tty_hangup(info->port.tty);
-					wake_up_interruptible(&info->port.open_wait);
-					info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
-				}
+				else
+					tty_hangup(tty);
 			}
 			break;
 		case C_CM_MCTS:
@@ -1706,7 +1177,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
 			printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
 					"port %ld\n", info->card, channel);
 #endif
-			cyz_handle_rx(info, buf_ctrl);
+			cyz_handle_rx(info, tty);
 			break;
 		case C_CM_TXBEMPTY:
 		case C_CM_TXLOWWM:
@@ -1716,7 +1187,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
 			printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
 					"port %ld\n", info->card, channel);
 #endif
-			cyz_handle_tx(info, buf_ctrl);
+			cyz_handle_tx(info, tty);
 			break;
 #endif				/* CONFIG_CYZ_INTR */
 		case C_CM_FATAL:
@@ -1726,9 +1197,10 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
 			break;
 		}
 		if (delta_count)
-			wake_up_interruptible(&info->delta_msr_wait);
+			wake_up_interruptible(&info->port.delta_msr_wait);
 		if (special_count)
 			tty_schedule_flip(tty);
+		tty_kref_put(tty);
 	}
 }
 
@@ -1774,10 +1246,6 @@ static void cyz_poll(unsigned long arg)
 {
 	struct cyclades_card *cinfo;
 	struct cyclades_port *info;
-	struct tty_struct *tty;
-	struct FIRM_ID __iomem *firm_id;
-	struct ZFW_CTRL __iomem *zfw_ctrl;
-	struct BUF_CTRL __iomem *buf_ctrl;
 	unsigned long expires = jiffies + HZ;
 	unsigned int port, card;
 
@@ -1789,10 +1257,6 @@ static void cyz_poll(unsigned long arg)
 		if (!cyz_is_loaded(cinfo))
 			continue;
 
-		firm_id = cinfo->base_addr + ID_ADDRESS;
-		zfw_ctrl = cinfo->base_addr +
-				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-
 	/* Skip first polling cycle to avoid racing conditions with the FW */
 		if (!cinfo->intr_enabled) {
 			cinfo->intr_enabled = 1;
@@ -1802,13 +1266,17 @@ static void cyz_poll(unsigned long arg)
 		cyz_handle_cmd(cinfo);
 
 		for (port = 0; port < cinfo->nports; port++) {
+			struct tty_struct *tty;
+
 			info = &cinfo->ports[port];
-			tty = info->port.tty;
-			buf_ctrl = &(zfw_ctrl->buf_ctrl[port]);
+			tty = tty_port_tty_get(&info->port);
+			/* OK to pass NULL to the handle functions below.
+			   They need to drop the data in that case. */
 
 			if (!info->throttle)
-				cyz_handle_rx(info, buf_ctrl);
-			cyz_handle_tx(info, buf_ctrl);
+				cyz_handle_rx(info, tty);
+			cyz_handle_tx(info, tty);
+			tty_kref_put(tty);
 		}
 		/* poll every 'cyz_polling_cycle' period */
 		expires = jiffies + cyz_polling_cycle;
@@ -1824,13 +1292,12 @@ static void cyz_poll(unsigned long arg)
 /* This is called whenever a port becomes active;
    interrupts are enabled and DTR & RTS are turned on.
  */
-static int startup(struct cyclades_port *info)
+static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
 {
 	struct cyclades_card *card;
 	unsigned long flags;
 	int retval = 0;
-	void __iomem *base_addr;
-	int chip, channel, index;
+	int channel;
 	unsigned long page;
 
 	card = info->card;
@@ -1842,15 +1309,11 @@ static int startup(struct cyclades_port *info)
 
 	spin_lock_irqsave(&card->card_lock, flags);
 
-	if (info->port.flags & ASYNC_INITIALIZED) {
-		free_page(page);
+	if (info->port.flags & ASYNC_INITIALIZED)
 		goto errout;
-	}
 
 	if (!info->type) {
-		if (info->port.tty)
-			set_bit(TTY_IO_ERROR, &info->port.tty->flags);
-		free_page(page);
+		set_bit(TTY_IO_ERROR, &tty->flags);
 		goto errout;
 	}
 
@@ -1861,96 +1324,53 @@ static int startup(struct cyclades_port *info)
 
 	spin_unlock_irqrestore(&card->card_lock, flags);
 
-	set_line_char(info);
+	cy_set_line_char(info, tty);
 
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
 		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
 
-#ifdef CY_DEBUG_OPEN
-		printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, "
-				"base_addr %p\n",
-				card, chip, channel, base_addr);
-#endif
 		spin_lock_irqsave(&card->card_lock, flags);
 
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
+		cyy_writeb(info, CyCAR, channel);
 
-		cy_writeb(base_addr + (CyRTPR << index),
+		cyy_writeb(info, CyRTPR,
 			(info->default_timeout ? info->default_timeout : 0x02));
 		/* 10ms rx timeout */
 
-		cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR,
-				index);
-
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
-		cy_writeb(base_addr + (CyMSVR1 << index), CyRTS);
-		cy_writeb(base_addr + (CyMSVR2 << index), CyDTR);
-
-#ifdef CY_DEBUG_DTR
-		printk(KERN_DEBUG "cyc:startup raising DTR\n");
-		printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-			readb(base_addr + (CyMSVR1 << index)),
-			readb(base_addr + (CyMSVR2 << index)));
-#endif
-
-		cy_writeb(base_addr + (CySRER << index),
-			readb(base_addr + (CySRER << index)) | CyRxData);
-		info->port.flags |= ASYNC_INITIALIZED;
-
-		if (info->port.tty)
-			clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
-		info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-		info->breakon = info->breakoff = 0;
-		memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
-		info->idle_stats.in_use =
-		info->idle_stats.recv_idle =
-		info->idle_stats.xmit_idle = jiffies;
+		cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR);
 
-		spin_unlock_irqrestore(&card->card_lock, flags);
+		cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0);
 
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
 	} else {
-		struct FIRM_ID __iomem *firm_id;
-		struct ZFW_CTRL __iomem *zfw_ctrl;
-		struct BOARD_CTRL __iomem *board_ctrl;
-		struct CH_CTRL __iomem *ch_ctrl;
+		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
 
-		base_addr = card->base_addr;
-
-		firm_id = base_addr + ID_ADDRESS;
 		if (!cyz_is_loaded(card))
 			return -ENODEV;
 
-		zfw_ctrl = card->base_addr +
-				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-		board_ctrl = &zfw_ctrl->board_ctrl;
-		ch_ctrl = zfw_ctrl->ch_ctrl;
-
 #ifdef CY_DEBUG_OPEN
 		printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
-			"base_addr %p\n", card, channel, base_addr);
+			"base_addr %p\n", card, channel, card->base_addr);
 #endif
 		spin_lock_irqsave(&card->card_lock, flags);
 
-		cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE);
+		cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE);
 #ifdef Z_WAKE
 #ifdef CONFIG_CYZ_INTR
-		cy_writel(&ch_ctrl[channel].intr_enable,
+		cy_writel(&ch_ctrl->intr_enable,
 			  C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
 			  C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD);
 #else
-		cy_writel(&ch_ctrl[channel].intr_enable,
+		cy_writel(&ch_ctrl->intr_enable,
 			  C_IN_IOCTLW | C_IN_MDCD);
 #endif				/* CONFIG_CYZ_INTR */
 #else
 #ifdef CONFIG_CYZ_INTR
-		cy_writel(&ch_ctrl[channel].intr_enable,
+		cy_writel(&ch_ctrl->intr_enable,
 			  C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
 			  C_IN_RXNNDT | C_IN_MDCD);
 #else
-		cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD);
+		cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD);
 #endif				/* CONFIG_CYZ_INTR */
 #endif				/* Z_WAKE */
 
@@ -1969,32 +1389,22 @@ static int startup(struct cyclades_port *info)
 
 		/* set timeout !!! */
 		/* set RTS and DTR !!! */
-		cy_writel(&ch_ctrl[channel].rs_control,
-			readl(&ch_ctrl[channel].rs_control) | C_RS_RTS |
-			C_RS_DTR);
-		retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
-		if (retval != 0) {
-			printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was "
-				"%x\n", info->line, retval);
-		}
-#ifdef CY_DEBUG_DTR
-		printk(KERN_DEBUG "cyc:startup raising Z DTR\n");
-#endif
+		tty_port_raise_dtr_rts(&info->port);
 
 		/* enable send, recv, modem !!! */
+	}
 
-		info->port.flags |= ASYNC_INITIALIZED;
-		if (info->port.tty)
-			clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
-		info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-		info->breakon = info->breakoff = 0;
-		memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
-		info->idle_stats.in_use =
-		info->idle_stats.recv_idle =
-		info->idle_stats.xmit_idle = jiffies;
+	info->port.flags |= ASYNC_INITIALIZED;
 
-		spin_unlock_irqrestore(&card->card_lock, flags);
-	}
+	clear_bit(TTY_IO_ERROR, &tty->flags);
+	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+	info->breakon = info->breakoff = 0;
+	memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
+	info->idle_stats.in_use =
+	info->idle_stats.recv_idle =
+	info->idle_stats.xmit_idle = jiffies;
+
+	spin_unlock_irqrestore(&card->card_lock, flags);
 
 #ifdef CY_DEBUG_OPEN
 	printk(KERN_DEBUG "cyc startup done\n");
@@ -2003,28 +1413,20 @@ static int startup(struct cyclades_port *info)
 
 errout:
 	spin_unlock_irqrestore(&card->card_lock, flags);
+	free_page(page);
 	return retval;
 }				/* startup */
 
 static void start_xmit(struct cyclades_port *info)
 {
-	struct cyclades_card *card;
+	struct cyclades_card *card = info->card;
 	unsigned long flags;
-	void __iomem *base_addr;
-	int chip, channel, index;
+	int channel = info->line - card->first_line;
 
-	card = info->card;
-	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
 		spin_lock_irqsave(&card->card_lock, flags);
-		cy_writeb(base_addr + (CyCAR << index), channel);
-		cy_writeb(base_addr + (CySRER << index),
-			readb(base_addr + (CySRER << index)) | CyTxRdy);
+		cyy_writeb(info, CyCAR, channel & 0x03);
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
 		spin_unlock_irqrestore(&card->card_lock, flags);
 	} else {
 #ifdef CONFIG_CYZ_INTR
@@ -2047,12 +1449,11 @@ static void start_xmit(struct cyclades_port *info)
  * This routine shuts down a serial port; interrupts are disabled,
  * and DTR is dropped if the hangup on close termio flag is on.
  */
-static void shutdown(struct cyclades_port *info)
+static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
 {
 	struct cyclades_card *card;
 	unsigned long flags;
-	void __iomem *base_addr;
-	int chip, channel, index;
+	int channel;
 
 	if (!(info->port.flags & ASYNC_INITIALIZED))
 		return;
@@ -2060,21 +1461,10 @@ static void shutdown(struct cyclades_port *info)
 	card = info->card;
 	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
-#ifdef CY_DEBUG_OPEN
-		printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, "
-				"channel %d, base_addr %p\n",
-				card, chip, channel, base_addr);
-#endif
-
 		spin_lock_irqsave(&card->card_lock, flags);
 
 		/* Clear delta_msr_wait queue to avoid mem leaks. */
-		wake_up_interruptible(&info->delta_msr_wait);
+		wake_up_interruptible(&info->port.delta_msr_wait);
 
 		if (info->port.xmit_buf) {
 			unsigned char *temp;
@@ -2082,47 +1472,25 @@ static void shutdown(struct cyclades_port *info)
 			info->port.xmit_buf = NULL;
 			free_page((unsigned long)temp);
 		}
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
-		if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) {
-			cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS);
-			cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR);
-#ifdef CY_DEBUG_DTR
-			printk(KERN_DEBUG "cyc shutdown dropping DTR\n");
-			printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-				readb(base_addr + (CyMSVR1 << index)),
-				readb(base_addr + (CyMSVR2 << index)));
-#endif
-		}
-		cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index);
+		if (tty->termios->c_cflag & HUPCL)
+			cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR);
+
+		cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR);
 		/* it may be appropriate to clear _XMIT at
 		   some later date (after testing)!!! */
 
-		if (info->port.tty)
-			set_bit(TTY_IO_ERROR, &info->port.tty->flags);
+		set_bit(TTY_IO_ERROR, &tty->flags);
 		info->port.flags &= ~ASYNC_INITIALIZED;
 		spin_unlock_irqrestore(&card->card_lock, flags);
 	} else {
-		struct FIRM_ID __iomem *firm_id;
-		struct ZFW_CTRL __iomem *zfw_ctrl;
-		struct BOARD_CTRL __iomem *board_ctrl;
-		struct CH_CTRL __iomem *ch_ctrl;
-		int retval;
-
-		base_addr = card->base_addr;
 #ifdef CY_DEBUG_OPEN
 		printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
-			"base_addr %p\n", card, channel, base_addr);
+			"base_addr %p\n", card, channel, card->base_addr);
 #endif
 
-		firm_id = base_addr + ID_ADDRESS;
 		if (!cyz_is_loaded(card))
 			return;
 
-		zfw_ctrl = card->base_addr +
-				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-		board_ctrl = &zfw_ctrl->board_ctrl;
-		ch_ctrl = zfw_ctrl->ch_ctrl;
-
 		spin_lock_irqsave(&card->card_lock, flags);
 
 		if (info->port.xmit_buf) {
@@ -2132,23 +1500,10 @@ static void shutdown(struct cyclades_port *info)
 			free_page((unsigned long)temp);
 		}
 
-		if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) {
-			cy_writel(&ch_ctrl[channel].rs_control,
-				(__u32)(readl(&ch_ctrl[channel].rs_control) &
-					~(C_RS_RTS | C_RS_DTR)));
-			retval = cyz_issue_cmd(info->card, channel,
-					C_CM_IOCTLM, 0L);
-			if (retval != 0) {
-				printk(KERN_ERR"cyc:shutdown retval on ttyC%d "
-					"was %x\n", info->line, retval);
-			}
-#ifdef CY_DEBUG_DTR
-			printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n");
-#endif
-		}
+		if (tty->termios->c_cflag & HUPCL)
+			tty_port_lower_dtr_rts(&info->port);
 
-		if (info->port.tty)
-			set_bit(TTY_IO_ERROR, &info->port.tty->flags);
+		set_bit(TTY_IO_ERROR, &tty->flags);
 		info->port.flags &= ~ASYNC_INITIALIZED;
 
 		spin_unlock_irqrestore(&card->card_lock, flags);
@@ -2165,199 +1520,6 @@ static void shutdown(struct cyclades_port *info)
  * ------------------------------------------------------------
  */
 
-static int
-block_til_ready(struct tty_struct *tty, struct file *filp,
-		struct cyclades_port *info)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	struct cyclades_card *cinfo;
-	unsigned long flags;
-	int chip, channel, index;
-	int retval;
-	void __iomem *base_addr;
-
-	cinfo = info->card;
-	channel = info->line - cinfo->first_line;
-
-	/*
-	 * If the device is in the middle of being closed, then block
-	 * until it's done, and then try again.
-	 */
-	if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) {
-		wait_event_interruptible(info->port.close_wait,
-				!(info->port.flags & ASYNC_CLOSING));
-		return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
-	}
-
-	/*
-	 * If non-blocking mode is set, then make the check up front
-	 * and then exit.
-	 */
-	if ((filp->f_flags & O_NONBLOCK) ||
-					(tty->flags & (1 << TTY_IO_ERROR))) {
-		info->port.flags |= ASYNC_NORMAL_ACTIVE;
-		return 0;
-	}
-
-	/*
-	 * Block waiting for the carrier detect and the line to become
-	 * free (i.e., not in use by the callout).  While we are in
-	 * this loop, info->port.count is dropped by one, so that
-	 * cy_close() knows when to free things.  We restore it upon
-	 * exit, either normal or abnormal.
-	 */
-	retval = 0;
-	add_wait_queue(&info->port.open_wait, &wait);
-#ifdef CY_DEBUG_OPEN
-	printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, "
-		"count = %d\n", info->line, info->port.count);
-#endif
-	spin_lock_irqsave(&cinfo->card_lock, flags);
-	if (!tty_hung_up_p(filp))
-		info->port.count--;
-	spin_unlock_irqrestore(&cinfo->card_lock, flags);
-#ifdef CY_DEBUG_COUNT
-	printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to "
-		"%d\n", current->pid, info->port.count);
-#endif
-	info->port.blocked_open++;
-
-	if (!cy_is_Z(cinfo)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = cinfo->bus_index;
-		base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);
-
-		while (1) {
-			spin_lock_irqsave(&cinfo->card_lock, flags);
-			if ((tty->termios->c_cflag & CBAUD)) {
-				cy_writeb(base_addr + (CyCAR << index),
-					  (u_char) channel);
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  CyRTS);
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  CyDTR);
-#ifdef CY_DEBUG_DTR
-				printk(KERN_DEBUG "cyc:block_til_ready raising "
-					"DTR\n");
-				printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-					readb(base_addr + (CyMSVR1 << index)),
-					readb(base_addr + (CyMSVR2 << index)));
-#endif
-			}
-			spin_unlock_irqrestore(&cinfo->card_lock, flags);
-
-			set_current_state(TASK_INTERRUPTIBLE);
-			if (tty_hung_up_p(filp) ||
-					!(info->port.flags & ASYNC_INITIALIZED)) {
-				retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-					  -EAGAIN : -ERESTARTSYS);
-				break;
-			}
-
-			spin_lock_irqsave(&cinfo->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) ||
-					(readb(base_addr +
-						(CyMSVR1 << index)) & CyDCD))) {
-				spin_unlock_irqrestore(&cinfo->card_lock, flags);
-				break;
-			}
-			spin_unlock_irqrestore(&cinfo->card_lock, flags);
-
-			if (signal_pending(current)) {
-				retval = -ERESTARTSYS;
-				break;
-			}
-#ifdef CY_DEBUG_OPEN
-			printk(KERN_DEBUG "cyc block_til_ready blocking: "
-				"ttyC%d, count = %d\n",
-				info->line, info->port.count);
-#endif
-			schedule();
-		}
-	} else {
-		struct FIRM_ID __iomem *firm_id;
-		struct ZFW_CTRL __iomem *zfw_ctrl;
-		struct BOARD_CTRL __iomem *board_ctrl;
-		struct CH_CTRL __iomem *ch_ctrl;
-
-		base_addr = cinfo->base_addr;
-		firm_id = base_addr + ID_ADDRESS;
-		if (!cyz_is_loaded(cinfo)) {
-			__set_current_state(TASK_RUNNING);
-			remove_wait_queue(&info->port.open_wait, &wait);
-			return -EINVAL;
-		}
-
-		zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)
-								& 0xfffff);
-		board_ctrl = &zfw_ctrl->board_ctrl;
-		ch_ctrl = zfw_ctrl->ch_ctrl;
-
-		while (1) {
-			if ((tty->termios->c_cflag & CBAUD)) {
-				cy_writel(&ch_ctrl[channel].rs_control,
-					readl(&ch_ctrl[channel].rs_control) |
-					C_RS_RTS | C_RS_DTR);
-				retval = cyz_issue_cmd(cinfo,
-					channel, C_CM_IOCTLM, 0L);
-				if (retval != 0) {
-					printk(KERN_ERR "cyc:block_til_ready "
-						"retval on ttyC%d was %x\n",
-						info->line, retval);
-				}
-#ifdef CY_DEBUG_DTR
-				printk(KERN_DEBUG "cyc:block_til_ready raising "
-					"Z DTR\n");
-#endif
-			}
-
-			set_current_state(TASK_INTERRUPTIBLE);
-			if (tty_hung_up_p(filp) ||
-					!(info->port.flags & ASYNC_INITIALIZED)) {
-				retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-					  -EAGAIN : -ERESTARTSYS);
-				break;
-			}
-			if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) ||
-					(readl(&ch_ctrl[channel].rs_status) &
-						C_RS_DCD))) {
-				break;
-			}
-			if (signal_pending(current)) {
-				retval = -ERESTARTSYS;
-				break;
-			}
-#ifdef CY_DEBUG_OPEN
-			printk(KERN_DEBUG "cyc block_til_ready blocking: "
-				"ttyC%d, count = %d\n",
-				info->line, info->port.count);
-#endif
-			schedule();
-		}
-	}
-	__set_current_state(TASK_RUNNING);
-	remove_wait_queue(&info->port.open_wait, &wait);
-	if (!tty_hung_up_p(filp)) {
-		info->port.count++;
-#ifdef CY_DEBUG_COUNT
-		printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing "
-			"count to %d\n", current->pid, info->port.count);
-#endif
-	}
-	info->port.blocked_open--;
-#ifdef CY_DEBUG_OPEN
-	printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, "
-		"count = %d\n", info->line, info->port.count);
-#endif
-	if (retval)
-		return retval;
-	info->port.flags |= ASYNC_NORMAL_ACTIVE;
-	return 0;
-}				/* block_til_ready */
-
 /*
  * This routine is called whenever a serial port is opened.  It
  * performs the serial-specific initialization for the tty structure.
@@ -2436,7 +1598,6 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
 	printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line);
 #endif
 	tty->driver_data = info;
-	info->port.tty = tty;
 	if (serial_paranoia_check(info, tty->name, "cy_open"))
 		return -ENODEV;
 
@@ -2462,11 +1623,11 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
 	/*
 	 * Start up serial port
 	 */
-	retval = startup(info);
+	retval = cy_startup(info, tty);
 	if (retval)
 		return retval;
 
-	retval = block_til_ready(tty, filp, info);
+	retval = tty_port_block_til_ready(&info->port, tty, filp);
 	if (retval) {
 #ifdef CY_DEBUG_OPEN
 		printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready "
@@ -2476,6 +1637,7 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
 	}
 
 	info->throttle = 0;
+	tty_port_tty_set(&info->port, tty);
 
 #ifdef CY_DEBUG_OPEN
 	printk(KERN_DEBUG "cyc:cy_open done\n");
@@ -2490,8 +1652,6 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
 {
 	struct cyclades_card *card;
 	struct cyclades_port *info = tty->driver_data;
-	void __iomem *base_addr;
-	int chip, channel, index;
 	unsigned long orig_jiffies;
 	int char_time;
 
@@ -2535,13 +1695,8 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
 		timeout, char_time, jiffies);
 #endif
 	card = info->card;
-	channel = (info->line) - (card->first_line);
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-		while (readb(base_addr + (CySRER << index)) & CyTxRdy) {
+		while (cyy_readb(info, CySRER) & CyTxRdy) {
 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
 			printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies);
 #endif
@@ -2595,103 +1750,37 @@ static void cy_flush_buffer(struct tty_struct *tty)
 }				/* cy_flush_buffer */
 
 
-/*
- * This routine is called when a particular tty device is closed.
- */
-static void cy_close(struct tty_struct *tty, struct file *filp)
+static void cy_do_close(struct tty_port *port)
 {
-	struct cyclades_port *info = tty->driver_data;
+	struct cyclades_port *info = container_of(port, struct cyclades_port,
+								port);
 	struct cyclades_card *card;
 	unsigned long flags;
-
-#ifdef CY_DEBUG_OTHER
-	printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line);
-#endif
-
-	if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
-		return;
+	int channel;
 
 	card = info->card;
-
-	spin_lock_irqsave(&card->card_lock, flags);
-	/* If the TTY is being hung up, nothing to do */
-	if (tty_hung_up_p(filp)) {
-		spin_unlock_irqrestore(&card->card_lock, flags);
-		return;
-	}
-#ifdef CY_DEBUG_OPEN
-	printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line,
-		info->port.count);
-#endif
-	if ((tty->count == 1) && (info->port.count != 1)) {
-		/*
-		 * Uh, oh.  tty->count is 1, which means that the tty
-		 * structure will be freed.  Info->count should always
-		 * be one in these conditions.  If it's greater than
-		 * one, we've got real problems, since it means the
-		 * serial port won't be shutdown.
-		 */
-		printk(KERN_ERR "cyc:cy_close: bad serial port count; "
-			"tty->count is 1, info->port.count is %d\n", info->port.count);
-		info->port.count = 1;
-	}
-#ifdef CY_DEBUG_COUNT
-	printk(KERN_DEBUG  "cyc:cy_close at (%d): decrementing count to %d\n",
-		current->pid, info->port.count - 1);
-#endif
-	if (--info->port.count < 0) {
-#ifdef CY_DEBUG_COUNT
-		printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n");
-#endif
-		info->port.count = 0;
-	}
-	if (info->port.count) {
-		spin_unlock_irqrestore(&card->card_lock, flags);
-		return;
-	}
-	info->port.flags |= ASYNC_CLOSING;
-
-	/*
-	 * Now we wait for the transmit buffer to clear; and we notify
-	 * the line discipline to only process XON/XOFF characters.
-	 */
-	tty->closing = 1;
-	spin_unlock_irqrestore(&card->card_lock, flags);
-	if (info->port.closing_wait != CY_CLOSING_WAIT_NONE)
-		tty_wait_until_sent(tty, info->port.closing_wait);
-
+	channel = info->line - card->first_line;
 	spin_lock_irqsave(&card->card_lock, flags);
 
 	if (!cy_is_Z(card)) {
-		int channel = info->line - card->first_line;
-		int index = card->bus_index;
-		void __iomem *base_addr = card->base_addr +
-			(cy_chip_offset[channel >> 2] << index);
 		/* Stop accepting input */
-		channel &= 0x03;
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
-		cy_writeb(base_addr + (CySRER << index),
-			  readb(base_addr + (CySRER << index)) & ~CyRxData);
+		cyy_writeb(info, CyCAR, channel & 0x03);
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);
 		if (info->port.flags & ASYNC_INITIALIZED) {
 			/* Waiting for on-board buffers to be empty before
 			   closing the port */
 			spin_unlock_irqrestore(&card->card_lock, flags);
-			cy_wait_until_sent(tty, info->timeout);
+			cy_wait_until_sent(port->tty, info->timeout);
 			spin_lock_irqsave(&card->card_lock, flags);
 		}
 	} else {
 #ifdef Z_WAKE
 		/* Waiting for on-board buffers to be empty before closing
 		   the port */
-		void __iomem *base_addr = card->base_addr;
-		struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS;
-		struct ZFW_CTRL __iomem *zfw_ctrl =
-		    base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
-		struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl;
-		int channel = info->line - card->first_line;
+		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
 		int retval;
 
-		if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) {
+		if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) {
 			retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
 			if (retval != 0) {
 				printk(KERN_DEBUG "cyc:cy_close retval on "
@@ -2703,32 +1792,19 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
 		}
 #endif
 	}
-
 	spin_unlock_irqrestore(&card->card_lock, flags);
-	shutdown(info);
-	cy_flush_buffer(tty);
-	tty_ldisc_flush(tty);
-	spin_lock_irqsave(&card->card_lock, flags);
-
-	tty->closing = 0;
-	info->port.tty = NULL;
-	if (info->port.blocked_open) {
-		spin_unlock_irqrestore(&card->card_lock, flags);
-		if (info->port.close_delay) {
-			msleep_interruptible(jiffies_to_msecs
-						(info->port.close_delay));
-		}
-		wake_up_interruptible(&info->port.open_wait);
-		spin_lock_irqsave(&card->card_lock, flags);
-	}
-	info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
-	wake_up_interruptible(&info->port.close_wait);
-
-#ifdef CY_DEBUG_OTHER
-	printk(KERN_DEBUG "cyc:cy_close done\n");
-#endif
+	cy_shutdown(info, port->tty);
+}
 
-	spin_unlock_irqrestore(&card->card_lock, flags);
+/*
+ * This routine is called when a particular tty device is closed.
+ */
+static void cy_close(struct tty_struct *tty, struct file *filp)
+{
+	struct cyclades_port *info = tty->driver_data;
+	if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
+		return;
+	tty_port_close(&info->port, tty, filp);
 }				/* cy_close */
 
 /* This routine gets called when tty_write has put something into
@@ -2871,18 +1947,13 @@ static int cy_write_room(struct tty_struct *tty)
 
 static int cy_chars_in_buffer(struct tty_struct *tty)
 {
-	struct cyclades_card *card;
 	struct cyclades_port *info = tty->driver_data;
-	int channel;
 
 	if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
 		return 0;
 
-	card = info->card;
-	channel = (info->line) - (card->first_line);
-
 #ifdef Z_EXT_CHARS_IN_BUFFER
-	if (!cy_is_Z(card)) {
+	if (!cy_is_Z(info->card)) {
 #endif				/* Z_EXT_CHARS_IN_BUFFER */
 #ifdef CY_DEBUG_IO
 		printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
@@ -2891,20 +1962,11 @@ static int cy_chars_in_buffer(struct tty_struct *tty)
 		return info->xmit_cnt;
 #ifdef Z_EXT_CHARS_IN_BUFFER
 	} else {
-		static struct FIRM_ID *firm_id;
-		static struct ZFW_CTRL *zfw_ctrl;
-		static struct CH_CTRL *ch_ctrl;
-		static struct BUF_CTRL *buf_ctrl;
+		struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
 		int char_count;
 		__u32 tx_put, tx_get, tx_bufsize;
 
 		lock_kernel();
-		firm_id = card->base_addr + ID_ADDRESS;
-		zfw_ctrl = card->base_addr +
-			(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-		ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
-		buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
-
 		tx_get = readl(&buf_ctrl->tx_get);
 		tx_put = readl(&buf_ctrl->tx_put);
 		tx_bufsize = readl(&buf_ctrl->tx_bufsize);
@@ -2957,48 +2019,44 @@ static void cyy_baud_calc(struct cyclades_port *info, __u32 baud)
  * This routine finds or computes the various line characteristics.
  * It used to be called config_setup
  */
-static void set_line_char(struct cyclades_port *info)
+static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty)
 {
 	struct cyclades_card *card;
 	unsigned long flags;
-	void __iomem *base_addr;
-	int chip, channel, index;
+	int channel;
 	unsigned cflag, iflag;
 	int baud, baud_rate = 0;
 	int i;
 
-	if (!info->port.tty || !info->port.tty->termios)
+	if (!tty->termios) /* XXX can this happen at all? */
 		return;
 
 	if (info->line == -1)
 		return;
 
-	cflag = info->port.tty->termios->c_cflag;
-	iflag = info->port.tty->termios->c_iflag;
+	cflag = tty->termios->c_cflag;
+	iflag = tty->termios->c_iflag;
 
 	/*
 	 * Set up the tty->alt_speed kludge
 	 */
-	if (info->port.tty) {
-		if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
-			info->port.tty->alt_speed = 57600;
-		if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
-			info->port.tty->alt_speed = 115200;
-		if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
-			info->port.tty->alt_speed = 230400;
-		if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
-			info->port.tty->alt_speed = 460800;
-	}
+	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
+		tty->alt_speed = 57600;
+	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
+		tty->alt_speed = 115200;
+	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
+		tty->alt_speed = 230400;
+	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
+		tty->alt_speed = 460800;
 
 	card = info->card;
 	channel = info->line - card->first_line;
 
 	if (!cy_is_Z(card)) {
-
-		index = card->bus_index;
+		u32 cflags;
 
 		/* baud rate */
-		baud = tty_get_baud_rate(info->port.tty);
+		baud = tty_get_baud_rate(tty);
 		if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
 				ASYNC_SPD_CUST) {
 			if (info->custom_divisor)
@@ -3107,124 +2165,68 @@ static void set_line_char(struct cyclades_port *info)
 	    cable.  Contact Marcio Saito for details.
 	 ***********************************************/
 
-		chip = channel >> 2;
 		channel &= 0x03;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
 
 		spin_lock_irqsave(&card->card_lock, flags);
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
+		cyy_writeb(info, CyCAR, channel);
 
 		/* tx and rx baud rate */
 
-		cy_writeb(base_addr + (CyTCOR << index), info->tco);
-		cy_writeb(base_addr + (CyTBPR << index), info->tbpr);
-		cy_writeb(base_addr + (CyRCOR << index), info->rco);
-		cy_writeb(base_addr + (CyRBPR << index), info->rbpr);
+		cyy_writeb(info, CyTCOR, info->tco);
+		cyy_writeb(info, CyTBPR, info->tbpr);
+		cyy_writeb(info, CyRCOR, info->rco);
+		cyy_writeb(info, CyRBPR, info->rbpr);
 
 		/* set line characteristics  according configuration */
 
-		cy_writeb(base_addr + (CySCHR1 << index),
-			  START_CHAR(info->port.tty));
-		cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->port.tty));
-		cy_writeb(base_addr + (CyCOR1 << index), info->cor1);
-		cy_writeb(base_addr + (CyCOR2 << index), info->cor2);
-		cy_writeb(base_addr + (CyCOR3 << index), info->cor3);
-		cy_writeb(base_addr + (CyCOR4 << index), info->cor4);
-		cy_writeb(base_addr + (CyCOR5 << index), info->cor5);
+		cyy_writeb(info, CySCHR1, START_CHAR(tty));
+		cyy_writeb(info, CySCHR2, STOP_CHAR(tty));
+		cyy_writeb(info, CyCOR1, info->cor1);
+		cyy_writeb(info, CyCOR2, info->cor2);
+		cyy_writeb(info, CyCOR3, info->cor3);
+		cyy_writeb(info, CyCOR4, info->cor4);
+		cyy_writeb(info, CyCOR5, info->cor5);
 
-		cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
-				CyCOR3ch, index);
+		cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
+				CyCOR3ch);
 
 		/* !!! Is this needed? */
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
-		cy_writeb(base_addr + (CyRTPR << index),
+		cyy_writeb(info, CyCAR, channel);
+		cyy_writeb(info, CyRTPR,
 			(info->default_timeout ? info->default_timeout : 0x02));
 		/* 10ms rx timeout */
 
-		if (C_CLOCAL(info->port.tty)) {
-			/* without modem intr */
-			cy_writeb(base_addr + (CySRER << index),
-				readb(base_addr + (CySRER << index)) | CyMdmCh);
-			/* act on 1->0 modem transitions */
-			if ((cflag & CRTSCTS) && info->rflow) {
-				cy_writeb(base_addr + (CyMCOR1 << index),
-					  (CyCTS | rflow_thr[i]));
-			} else {
-				cy_writeb(base_addr + (CyMCOR1 << index),
-					  CyCTS);
-			}
-			/* act on 0->1 modem transitions */
-			cy_writeb(base_addr + (CyMCOR2 << index), CyCTS);
-		} else {
-			/* without modem intr */
-			cy_writeb(base_addr + (CySRER << index),
-				  readb(base_addr +
-					   (CySRER << index)) | CyMdmCh);
-			/* act on 1->0 modem transitions */
-			if ((cflag & CRTSCTS) && info->rflow) {
-				cy_writeb(base_addr + (CyMCOR1 << index),
-					  (CyDSR | CyCTS | CyRI | CyDCD |
-					   rflow_thr[i]));
-			} else {
-				cy_writeb(base_addr + (CyMCOR1 << index),
-					  CyDSR | CyCTS | CyRI | CyDCD);
-			}
-			/* act on 0->1 modem transitions */
-			cy_writeb(base_addr + (CyMCOR2 << index),
-				  CyDSR | CyCTS | CyRI | CyDCD);
-		}
+		cflags = CyCTS;
+		if (!C_CLOCAL(tty))
+			cflags |= CyDSR | CyRI | CyDCD;
+		/* without modem intr */
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh);
+		/* act on 1->0 modem transitions */
+		if ((cflag & CRTSCTS) && info->rflow)
+			cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]);
+		else
+			cyy_writeb(info, CyMCOR1, cflags);
+		/* act on 0->1 modem transitions */
+		cyy_writeb(info, CyMCOR2, cflags);
 
-		if (i == 0) {	/* baud rate is zero, turn off line */
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  ~CyRTS);
-			} else {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  ~CyDTR);
-			}
-#ifdef CY_DEBUG_DTR
-			printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n");
-			printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-				readb(base_addr + (CyMSVR1 << index)),
-				readb(base_addr + (CyMSVR2 << index)));
-#endif
-		} else {
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  CyRTS);
-			} else {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  CyDTR);
-			}
-#ifdef CY_DEBUG_DTR
-			printk(KERN_DEBUG "cyc:set_line_char raising DTR\n");
-			printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-				readb(base_addr + (CyMSVR1 << index)),
-				readb(base_addr + (CyMSVR2 << index)));
-#endif
-		}
+		if (i == 0)	/* baud rate is zero, turn off line */
+			cyy_change_rts_dtr(info, 0, TIOCM_DTR);
+		else
+			cyy_change_rts_dtr(info, TIOCM_DTR, 0);
 
-		if (info->port.tty)
-			clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
+		clear_bit(TTY_IO_ERROR, &tty->flags);
 		spin_unlock_irqrestore(&card->card_lock, flags);
 
 	} else {
-		struct FIRM_ID __iomem *firm_id;
-		struct ZFW_CTRL __iomem *zfw_ctrl;
-		struct CH_CTRL __iomem *ch_ctrl;
+		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
 		__u32 sw_flow;
 		int retval;
 
-		firm_id = card->base_addr + ID_ADDRESS;
 		if (!cyz_is_loaded(card))
 			return;
 
-		zfw_ctrl = card->base_addr +
-			(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-		ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
-
 		/* baud rate */
-		baud = tty_get_baud_rate(info->port.tty);
+		baud = tty_get_baud_rate(tty);
 		if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
 				ASYNC_SPD_CUST) {
 			if (info->custom_divisor)
@@ -3335,45 +2337,38 @@ static void set_line_char(struct cyclades_port *info)
 				"was %x\n", info->line, retval);
 		}
 
-		if (info->port.tty)
-			clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
+		clear_bit(TTY_IO_ERROR, &tty->flags);
 	}
 }				/* set_line_char */
 
-static int
-get_serial_info(struct cyclades_port *info,
+static int cy_get_serial_info(struct cyclades_port *info,
 		struct serial_struct __user *retinfo)
 {
-	struct serial_struct tmp;
 	struct cyclades_card *cinfo = info->card;
-
-	if (!retinfo)
-		return -EFAULT;
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.type = info->type;
-	tmp.line = info->line;
-	tmp.port = (info->card - cy_card) * 0x100 + info->line -
-		cinfo->first_line;
-	tmp.irq = cinfo->irq;
-	tmp.flags = info->port.flags;
-	tmp.close_delay = info->port.close_delay;
-	tmp.closing_wait = info->port.closing_wait;
-	tmp.baud_base = info->baud;
-	tmp.custom_divisor = info->custom_divisor;
-	tmp.hub6 = 0;		/*!!! */
+	struct serial_struct tmp = {
+		.type = info->type,
+		.line = info->line,
+		.port = (info->card - cy_card) * 0x100 + info->line -
+			cinfo->first_line,
+		.irq = cinfo->irq,
+		.flags = info->port.flags,
+		.close_delay = info->port.close_delay,
+		.closing_wait = info->port.closing_wait,
+		.baud_base = info->baud,
+		.custom_divisor = info->custom_divisor,
+		.hub6 = 0,		/*!!! */
+	};
 	return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
-}				/* get_serial_info */
+}
 
 static int
-set_serial_info(struct cyclades_port *info,
+cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
 		struct serial_struct __user *new_info)
 {
 	struct serial_struct new_serial;
-	struct cyclades_port old_info;
 
 	if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
 		return -EFAULT;
-	old_info = *info;
 
 	if (!capable(CAP_SYS_ADMIN)) {
 		if (new_serial.close_delay != info->port.close_delay ||
@@ -3403,10 +2398,10 @@ set_serial_info(struct cyclades_port *info,
 
 check_and_exit:
 	if (info->port.flags & ASYNC_INITIALIZED) {
-		set_line_char(info);
+		cy_set_line_char(info, tty);
 		return 0;
 	} else {
-		return startup(info);
+		return cy_startup(info, tty);
 	}
 }				/* set_serial_info */
 
@@ -3422,24 +2417,14 @@ check_and_exit:
  */
 static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
 {
-	struct cyclades_card *card;
-	int chip, channel, index;
-	unsigned char status;
+	struct cyclades_card *card = info->card;
 	unsigned int result;
 	unsigned long flags;
-	void __iomem *base_addr;
+	u8 status;
 
-	card = info->card;
-	channel = (info->line) - (card->first_line);
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
 		spin_lock_irqsave(&card->card_lock, flags);
-		status = readb(base_addr + (CySRER << index)) &
-				(CyTxRdy | CyTxMpty);
+		status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty);
 		spin_unlock_irqrestore(&card->card_lock, flags);
 		result = (status ? 0 : TIOCSER_TEMT);
 	} else {
@@ -3453,34 +2438,23 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file)
 {
 	struct cyclades_port *info = tty->driver_data;
 	struct cyclades_card *card;
-	int chip, channel, index;
-	void __iomem *base_addr;
-	unsigned long flags;
-	unsigned char status;
-	unsigned long lstatus;
-	unsigned int result;
-	struct FIRM_ID __iomem *firm_id;
-	struct ZFW_CTRL __iomem *zfw_ctrl;
-	struct BOARD_CTRL __iomem *board_ctrl;
-	struct CH_CTRL __iomem *ch_ctrl;
+	int result;
 
 	if (serial_paranoia_check(info, tty->name, __func__))
 		return -ENODEV;
 
-	lock_kernel();
-
 	card = info->card;
-	channel = info->line - card->first_line;
+
+	lock_kernel();
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
+		unsigned long flags;
+		int channel = info->line - card->first_line;
+		u8 status;
 
 		spin_lock_irqsave(&card->card_lock, flags);
-		cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
-		status = readb(base_addr + (CyMSVR1 << index));
-		status |= readb(base_addr + (CyMSVR2 << index));
+		cyy_writeb(info, CyCAR, channel & 0x03);
+		status = cyy_readb(info, CyMSVR1);
+		status |= cyy_readb(info, CyMSVR2);
 		spin_unlock_irqrestore(&card->card_lock, flags);
 
 		if (info->rtsdtr_inv) {
@@ -3495,27 +2469,22 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file)
 			((status & CyDSR) ? TIOCM_DSR : 0) |
 			((status & CyCTS) ? TIOCM_CTS : 0);
 	} else {
-		base_addr = card->base_addr;
-		firm_id = card->base_addr + ID_ADDRESS;
-		if (cyz_is_loaded(card)) {
-			zfw_ctrl = card->base_addr +
-				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-			board_ctrl = &zfw_ctrl->board_ctrl;
-			ch_ctrl = zfw_ctrl->ch_ctrl;
-			lstatus = readl(&ch_ctrl[channel].rs_status);
-			result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
-				((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
-				((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
-				((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
-				((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
-				((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
-		} else {
-			result = 0;
-			unlock_kernel();
-			return -ENODEV;
+		u32 lstatus;
+
+		if (!cyz_is_loaded(card)) {
+			result = -ENODEV;
+			goto end;
 		}
 
+		lstatus = readl(&info->u.cyz.ch_ctrl->rs_status);
+		result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
+			((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
+			((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
+			((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
+			((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
+			((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
 	}
+end:
 	unlock_kernel();
 	return result;
 }				/* cy_tiomget */
@@ -3526,150 +2495,53 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
 {
 	struct cyclades_port *info = tty->driver_data;
 	struct cyclades_card *card;
-	int chip, channel, index;
-	void __iomem *base_addr;
 	unsigned long flags;
-	struct FIRM_ID __iomem *firm_id;
-	struct ZFW_CTRL __iomem *zfw_ctrl;
-	struct BOARD_CTRL __iomem *board_ctrl;
-	struct CH_CTRL __iomem *ch_ctrl;
-	int retval;
 
 	if (serial_paranoia_check(info, tty->name, __func__))
 		return -ENODEV;
 
 	card = info->card;
-	channel = (info->line) - (card->first_line);
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
+		spin_lock_irqsave(&card->card_lock, flags);
+		cyy_change_rts_dtr(info, set, clear);
+		spin_unlock_irqrestore(&card->card_lock, flags);
+	} else {
+		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
+		int retval, channel = info->line - card->first_line;
+		u32 rs;
 
-		if (set & TIOCM_RTS) {
-			spin_lock_irqsave(&card->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  CyDTR);
-			} else {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  CyRTS);
-			}
-			spin_unlock_irqrestore(&card->card_lock, flags);
-		}
-		if (clear & TIOCM_RTS) {
-			spin_lock_irqsave(&card->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  ~CyDTR);
-			} else {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  ~CyRTS);
-			}
-			spin_unlock_irqrestore(&card->card_lock, flags);
-		}
+		if (!cyz_is_loaded(card))
+			return -ENODEV;
+
+		spin_lock_irqsave(&card->card_lock, flags);
+		rs = readl(&ch_ctrl->rs_control);
+		if (set & TIOCM_RTS)
+			rs |= C_RS_RTS;
+		if (clear & TIOCM_RTS)
+			rs &= ~C_RS_RTS;
 		if (set & TIOCM_DTR) {
-			spin_lock_irqsave(&card->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  CyRTS);
-			} else {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  CyDTR);
-			}
+			rs |= C_RS_DTR;
 #ifdef CY_DEBUG_DTR
-			printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
-			printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-				readb(base_addr + (CyMSVR1 << index)),
-				readb(base_addr + (CyMSVR2 << index)));
+			printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n");
 #endif
-			spin_unlock_irqrestore(&card->card_lock, flags);
 		}
 		if (clear & TIOCM_DTR) {
-			spin_lock_irqsave(&card->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  ~CyRTS);
-			} else {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  ~CyDTR);
-			}
-
+			rs &= ~C_RS_DTR;
 #ifdef CY_DEBUG_DTR
-			printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
-			printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
-				readb(base_addr + (CyMSVR1 << index)),
-				readb(base_addr + (CyMSVR2 << index)));
+			printk(KERN_DEBUG "cyc:set_modem_info clearing "
+				"Z DTR\n");
 #endif
-			spin_unlock_irqrestore(&card->card_lock, flags);
 		}
-	} else {
-		base_addr = card->base_addr;
-
-		firm_id = card->base_addr + ID_ADDRESS;
-		if (cyz_is_loaded(card)) {
-			zfw_ctrl = card->base_addr +
-				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
-			board_ctrl = &zfw_ctrl->board_ctrl;
-			ch_ctrl = zfw_ctrl->ch_ctrl;
-
-			if (set & TIOCM_RTS) {
-				spin_lock_irqsave(&card->card_lock, flags);
-				cy_writel(&ch_ctrl[channel].rs_control,
-					readl(&ch_ctrl[channel].rs_control) |
-					C_RS_RTS);
-				spin_unlock_irqrestore(&card->card_lock, flags);
-			}
-			if (clear & TIOCM_RTS) {
-				spin_lock_irqsave(&card->card_lock, flags);
-				cy_writel(&ch_ctrl[channel].rs_control,
-					readl(&ch_ctrl[channel].rs_control) &
-					~C_RS_RTS);
-				spin_unlock_irqrestore(&card->card_lock, flags);
-			}
-			if (set & TIOCM_DTR) {
-				spin_lock_irqsave(&card->card_lock, flags);
-				cy_writel(&ch_ctrl[channel].rs_control,
-					readl(&ch_ctrl[channel].rs_control) |
-					C_RS_DTR);
-#ifdef CY_DEBUG_DTR
-				printk(KERN_DEBUG "cyc:set_modem_info raising "
-					"Z DTR\n");
-#endif
-				spin_unlock_irqrestore(&card->card_lock, flags);
-			}
-			if (clear & TIOCM_DTR) {
-				spin_lock_irqsave(&card->card_lock, flags);
-				cy_writel(&ch_ctrl[channel].rs_control,
-					readl(&ch_ctrl[channel].rs_control) &
-					~C_RS_DTR);
-#ifdef CY_DEBUG_DTR
-				printk(KERN_DEBUG "cyc:set_modem_info clearing "
-					"Z DTR\n");
-#endif
-				spin_unlock_irqrestore(&card->card_lock, flags);
-			}
-		} else {
-			return -ENODEV;
-		}
-		spin_lock_irqsave(&card->card_lock, flags);
+		cy_writel(&ch_ctrl->rs_control, rs);
 		retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
+		spin_unlock_irqrestore(&card->card_lock, flags);
 		if (retval != 0) {
 			printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
 				"was %x\n", info->line, retval);
 		}
-		spin_unlock_irqrestore(&card->card_lock, flags);
 	}
 	return 0;
-}				/* cy_tiocmset */
+}
 
 /*
  * cy_break() --- routine which turns the break handling on or off
@@ -3734,41 +2606,18 @@ static int cy_break(struct tty_struct *tty, int break_state)
 	return retval;
 }				/* cy_break */
 
-static int get_mon_info(struct cyclades_port *info,
-				struct cyclades_monitor __user *mon)
-{
-
-	if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor)))
-		return -EFAULT;
-	info->mon.int_count = 0;
-	info->mon.char_count = 0;
-	info->mon.char_max = 0;
-	info->mon.char_last = 0;
-	return 0;
-}				/* get_mon_info */
-
 static int set_threshold(struct cyclades_port *info, unsigned long value)
 {
-	struct cyclades_card *card;
-	void __iomem *base_addr;
-	int channel, chip, index;
+	struct cyclades_card *card = info->card;
 	unsigned long flags;
 
-	card = info->card;
-	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr =
-		    card->base_addr + (cy_chip_offset[chip] << index);
-
 		info->cor3 &= ~CyREC_FIFO;
 		info->cor3 |= value & CyREC_FIFO;
 
 		spin_lock_irqsave(&card->card_lock, flags);
-		cy_writeb(base_addr + (CyCOR3 << index), info->cor3);
-		cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index);
+		cyy_writeb(info, CyCOR3, info->cor3);
+		cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch);
 		spin_unlock_irqrestore(&card->card_lock, flags);
 	}
 	return 0;
@@ -3777,55 +2626,23 @@ static int set_threshold(struct cyclades_port *info, unsigned long value)
 static int get_threshold(struct cyclades_port *info,
 						unsigned long __user *value)
 {
-	struct cyclades_card *card;
-	void __iomem *base_addr;
-	int channel, chip, index;
-	unsigned long tmp;
+	struct cyclades_card *card = info->card;
 
-	card = info->card;
-	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
-		tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO;
+		u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO;
 		return put_user(tmp, value);
 	}
 	return 0;
 }				/* get_threshold */
 
-static int set_default_threshold(struct cyclades_port *info,
-							unsigned long value)
-{
-	info->default_threshold = value & 0x0f;
-	return 0;
-}				/* set_default_threshold */
-
-static int get_default_threshold(struct cyclades_port *info,
-						unsigned long __user *value)
-{
-	return put_user(info->default_threshold, value);
-}				/* get_default_threshold */
-
 static int set_timeout(struct cyclades_port *info, unsigned long value)
 {
-	struct cyclades_card *card;
-	void __iomem *base_addr;
-	int channel, chip, index;
+	struct cyclades_card *card = info->card;
 	unsigned long flags;
 
-	card = info->card;
-	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
 		spin_lock_irqsave(&card->card_lock, flags);
-		cy_writeb(base_addr + (CyRTPR << index), value & 0xff);
+		cyy_writeb(info, CyRTPR, value & 0xff);
 		spin_unlock_irqrestore(&card->card_lock, flags);
 	}
 	return 0;
@@ -3834,36 +2651,35 @@ static int set_timeout(struct cyclades_port *info, unsigned long value)
 static int get_timeout(struct cyclades_port *info,
 						unsigned long __user *value)
 {
-	struct cyclades_card *card;
-	void __iomem *base_addr;
-	int channel, chip, index;
-	unsigned long tmp;
+	struct cyclades_card *card = info->card;
 
-	card = info->card;
-	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		index = card->bus_index;
-		base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
-		tmp = readb(base_addr + (CyRTPR << index));
+		u8 tmp = cyy_readb(info, CyRTPR);
 		return put_user(tmp, value);
 	}
 	return 0;
 }				/* get_timeout */
 
-static int set_default_timeout(struct cyclades_port *info, unsigned long value)
+static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg,
+		struct cyclades_icount *cprev)
 {
-	info->default_timeout = value & 0xff;
-	return 0;
-}				/* set_default_timeout */
+	struct cyclades_icount cnow;
+	unsigned long flags;
+	int ret;
 
-static int get_default_timeout(struct cyclades_port *info,
-					unsigned long __user *value)
-{
-	return put_user(info->default_timeout, value);
-}				/* get_default_timeout */
+	spin_lock_irqsave(&info->card->card_lock, flags);
+	cnow = info->icount;	/* atomic copy */
+	spin_unlock_irqrestore(&info->card->card_lock, flags);
+
+	ret =	((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
+		((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
+		((arg & TIOCM_CD)  && (cnow.dcd != cprev->dcd)) ||
+		((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
+
+	*cprev = cnow;
+
+	return ret;
+}
 
 /*
  * This routine allows the tty driver to implement device-
@@ -3875,8 +2691,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 	 unsigned int cmd, unsigned long arg)
 {
 	struct cyclades_port *info = tty->driver_data;
-	struct cyclades_icount cprev, cnow;	/* kernel counter temps */
-	struct serial_icounter_struct __user *p_cuser;	/* user space */
+	struct cyclades_icount cnow;	/* kernel counter temps */
 	int ret_val = 0;
 	unsigned long flags;
 	void __user *argp = (void __user *)arg;
@@ -3892,7 +2707,11 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 
 	switch (cmd) {
 	case CYGETMON:
-		ret_val = get_mon_info(info, argp);
+		if (copy_to_user(argp, &info->mon, sizeof(info->mon))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		memset(&info->mon, 0, sizeof(info->mon));
 		break;
 	case CYGETTHRESH:
 		ret_val = get_threshold(info, argp);
@@ -3901,10 +2720,11 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 		ret_val = set_threshold(info, arg);
 		break;
 	case CYGETDEFTHRESH:
-		ret_val = get_default_threshold(info, argp);
+		ret_val = put_user(info->default_threshold,
+				(unsigned long __user *)argp);
 		break;
 	case CYSETDEFTHRESH:
-		ret_val = set_default_threshold(info, arg);
+		info->default_threshold = arg & 0x0f;
 		break;
 	case CYGETTIMEOUT:
 		ret_val = get_timeout(info, argp);
@@ -3913,21 +2733,20 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 		ret_val = set_timeout(info, arg);
 		break;
 	case CYGETDEFTIMEOUT:
-		ret_val = get_default_timeout(info, argp);
+		ret_val = put_user(info->default_timeout,
+				(unsigned long __user *)argp);
 		break;
 	case CYSETDEFTIMEOUT:
-		ret_val = set_default_timeout(info, arg);
+		info->default_timeout = arg & 0xff;
 		break;
 	case CYSETRFLOW:
 		info->rflow = (int)arg;
-		ret_val = 0;
 		break;
 	case CYGETRFLOW:
 		ret_val = info->rflow;
 		break;
 	case CYSETRTSDTR_INV:
 		info->rtsdtr_inv = (int)arg;
-		ret_val = 0;
 		break;
 	case CYGETRTSDTR_INV:
 		ret_val = info->rtsdtr_inv;
@@ -3938,7 +2757,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 #ifndef CONFIG_CYZ_INTR
 	case CYZSETPOLLCYCLE:
 		cyz_polling_cycle = (arg * HZ) / 1000;
-		ret_val = 0;
 		break;
 	case CYZGETPOLLCYCLE:
 		ret_val = (cyz_polling_cycle * 1000) / HZ;
@@ -3946,16 +2764,15 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 #endif				/* CONFIG_CYZ_INTR */
 	case CYSETWAIT:
 		info->port.closing_wait = (unsigned short)arg * HZ / 100;
-		ret_val = 0;
 		break;
 	case CYGETWAIT:
 		ret_val = info->port.closing_wait / (HZ / 100);
 		break;
 	case TIOCGSERIAL:
-		ret_val = get_serial_info(info, argp);
+		ret_val = cy_get_serial_info(info, argp);
 		break;
 	case TIOCSSERIAL:
-		ret_val = set_serial_info(info, argp);
+		ret_val = cy_set_serial_info(info, tty, argp);
 		break;
 	case TIOCSERGETLSR:	/* Get line status register */
 		ret_val = get_lsr_info(info, argp);
@@ -3971,17 +2788,8 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 		/* note the counters on entry */
 		cnow = info->icount;
 		spin_unlock_irqrestore(&info->card->card_lock, flags);
-		ret_val = wait_event_interruptible(info->delta_msr_wait, ({
-			cprev = cnow;
-			spin_lock_irqsave(&info->card->card_lock, flags);
-			cnow = info->icount;	/* atomic copy */
-			spin_unlock_irqrestore(&info->card->card_lock, flags);
-
-			((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
-			((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
-			((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
-			((arg & TIOCM_CTS) && (cnow.cts != cprev.cts));
-		}));
+		ret_val = wait_event_interruptible(info->port.delta_msr_wait,
+				cy_cflags_changed(info, arg, &cnow));
 		break;
 
 		/*
@@ -3990,46 +2798,29 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
 		 * NB: both 1->0 and 0->1 transitions are counted except for
 		 *     RI where only 0->1 is counted.
 		 */
-	case TIOCGICOUNT:
+	case TIOCGICOUNT: {
+		struct serial_icounter_struct sic = { };
+
 		spin_lock_irqsave(&info->card->card_lock, flags);
 		cnow = info->icount;
 		spin_unlock_irqrestore(&info->card->card_lock, flags);
-		p_cuser = argp;
-		ret_val = put_user(cnow.cts, &p_cuser->cts);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.dsr, &p_cuser->dsr);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.rng, &p_cuser->rng);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.dcd, &p_cuser->dcd);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.rx, &p_cuser->rx);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.tx, &p_cuser->tx);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.frame, &p_cuser->frame);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.overrun, &p_cuser->overrun);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.parity, &p_cuser->parity);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.brk, &p_cuser->brk);
-		if (ret_val)
-			break;
-		ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
-		if (ret_val)
-			break;
-		ret_val = 0;
+
+		sic.cts = cnow.cts;
+		sic.dsr = cnow.dsr;
+		sic.rng = cnow.rng;
+		sic.dcd = cnow.dcd;
+		sic.rx = cnow.rx;
+		sic.tx = cnow.tx;
+		sic.frame = cnow.frame;
+		sic.overrun = cnow.overrun;
+		sic.parity = cnow.parity;
+		sic.brk = cnow.brk;
+		sic.buf_overrun = cnow.buf_overrun;
+
+		if (copy_to_user(argp, &sic, sizeof(sic)))
+			ret_val = -EFAULT;
 		break;
+	}
 	default:
 		ret_val = -ENOIOCTLCMD;
 	}
@@ -4055,7 +2846,7 @@ static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
 	printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line);
 #endif
 
-	set_line_char(info);
+	cy_set_line_char(info, tty);
 
 	if ((old_termios->c_cflag & CRTSCTS) &&
 			!(tty->termios->c_cflag & CRTSCTS)) {
@@ -4112,8 +2903,6 @@ static void cy_throttle(struct tty_struct *tty)
 	struct cyclades_port *info = tty->driver_data;
 	struct cyclades_card *card;
 	unsigned long flags;
-	void __iomem *base_addr;
-	int chip, channel, index;
 
 #ifdef CY_DEBUG_THROTTLE
 	char buf[64];
@@ -4135,24 +2924,9 @@ static void cy_throttle(struct tty_struct *tty)
 	}
 
 	if (tty->termios->c_cflag & CRTSCTS) {
-		channel = info->line - card->first_line;
 		if (!cy_is_Z(card)) {
-			chip = channel >> 2;
-			channel &= 0x03;
-			index = card->bus_index;
-			base_addr = card->base_addr +
-				(cy_chip_offset[chip] << index);
-
 			spin_lock_irqsave(&card->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  ~CyDTR);
-			} else {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  ~CyRTS);
-			}
+			cyy_change_rts_dtr(info, 0, TIOCM_RTS);
 			spin_unlock_irqrestore(&card->card_lock, flags);
 		} else {
 			info->throttle = 1;
@@ -4170,8 +2944,6 @@ static void cy_unthrottle(struct tty_struct *tty)
 	struct cyclades_port *info = tty->driver_data;
 	struct cyclades_card *card;
 	unsigned long flags;
-	void __iomem *base_addr;
-	int chip, channel, index;
 
 #ifdef CY_DEBUG_THROTTLE
 	char buf[64];
@@ -4192,24 +2964,9 @@ static void cy_unthrottle(struct tty_struct *tty)
 
 	if (tty->termios->c_cflag & CRTSCTS) {
 		card = info->card;
-		channel = info->line - card->first_line;
 		if (!cy_is_Z(card)) {
-			chip = channel >> 2;
-			channel &= 0x03;
-			index = card->bus_index;
-			base_addr = card->base_addr +
-				(cy_chip_offset[chip] << index);
-
 			spin_lock_irqsave(&card->card_lock, flags);
-			cy_writeb(base_addr + (CyCAR << index),
-				  (u_char) channel);
-			if (info->rtsdtr_inv) {
-				cy_writeb(base_addr + (CyMSVR2 << index),
-					  CyDTR);
-			} else {
-				cy_writeb(base_addr + (CyMSVR1 << index),
-					  CyRTS);
-			}
+			cyy_change_rts_dtr(info, TIOCM_RTS, 0);
 			spin_unlock_irqrestore(&card->card_lock, flags);
 		} else {
 			info->throttle = 0;
@@ -4224,8 +2981,7 @@ static void cy_stop(struct tty_struct *tty)
 {
 	struct cyclades_card *cinfo;
 	struct cyclades_port *info = tty->driver_data;
-	void __iomem *base_addr;
-	int chip, channel, index;
+	int channel;
 	unsigned long flags;
 
 #ifdef CY_DEBUG_OTHER
@@ -4238,16 +2994,9 @@ static void cy_stop(struct tty_struct *tty)
 	cinfo = info->card;
 	channel = info->line - cinfo->first_line;
 	if (!cy_is_Z(cinfo)) {
-		index = cinfo->bus_index;
-		chip = channel >> 2;
-		channel &= 0x03;
-		base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);
-
 		spin_lock_irqsave(&cinfo->card_lock, flags);
-		cy_writeb(base_addr + (CyCAR << index),
-			(u_char)(channel & 0x0003)); /* index channel */
-		cy_writeb(base_addr + (CySRER << index),
-			  readb(base_addr + (CySRER << index)) & ~CyTxRdy);
+		cyy_writeb(info, CyCAR, channel & 0x03);
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
 		spin_unlock_irqrestore(&cinfo->card_lock, flags);
 	}
 }				/* cy_stop */
@@ -4256,8 +3005,7 @@ static void cy_start(struct tty_struct *tty)
 {
 	struct cyclades_card *cinfo;
 	struct cyclades_port *info = tty->driver_data;
-	void __iomem *base_addr;
-	int chip, channel, index;
+	int channel;
 	unsigned long flags;
 
 #ifdef CY_DEBUG_OTHER
@@ -4269,17 +3017,10 @@ static void cy_start(struct tty_struct *tty)
 
 	cinfo = info->card;
 	channel = info->line - cinfo->first_line;
-	index = cinfo->bus_index;
 	if (!cy_is_Z(cinfo)) {
-		chip = channel >> 2;
-		channel &= 0x03;
-		base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);
-
 		spin_lock_irqsave(&cinfo->card_lock, flags);
-		cy_writeb(base_addr + (CyCAR << index),
-			(u_char) (channel & 0x0003));	/* index channel */
-		cy_writeb(base_addr + (CySRER << index),
-			  readb(base_addr + (CySRER << index)) | CyTxRdy);
+		cyy_writeb(info, CyCAR, channel & 0x03);
+		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
 		spin_unlock_irqrestore(&cinfo->card_lock, flags);
 	}
 }				/* cy_start */
@@ -4299,17 +3040,84 @@ static void cy_hangup(struct tty_struct *tty)
 		return;
 
 	cy_flush_buffer(tty);
-	shutdown(info);
-	info->port.count = 0;
-#ifdef CY_DEBUG_COUNT
-	printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n",
-		current->pid);
-#endif
-	info->port.tty = NULL;
-	info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
-	wake_up_interruptible(&info->port.open_wait);
+	cy_shutdown(info, tty);
+	tty_port_hangup(&info->port);
 }				/* cy_hangup */
 
+static int cyy_carrier_raised(struct tty_port *port)
+{
+	struct cyclades_port *info = container_of(port, struct cyclades_port,
+			port);
+	struct cyclades_card *cinfo = info->card;
+	unsigned long flags;
+	int channel = info->line - cinfo->first_line;
+	u32 cd;
+
+	spin_lock_irqsave(&cinfo->card_lock, flags);
+	cyy_writeb(info, CyCAR, channel & 0x03);
+	cd = cyy_readb(info, CyMSVR1) & CyDCD;
+	spin_unlock_irqrestore(&cinfo->card_lock, flags);
+
+	return cd;
+}
+
+static void cyy_dtr_rts(struct tty_port *port, int raise)
+{
+	struct cyclades_port *info = container_of(port, struct cyclades_port,
+			port);
+	struct cyclades_card *cinfo = info->card;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cinfo->card_lock, flags);
+	cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0,
+			raise ? 0 : TIOCM_RTS | TIOCM_DTR);
+	spin_unlock_irqrestore(&cinfo->card_lock, flags);
+}
+
+static int cyz_carrier_raised(struct tty_port *port)
+{
+	struct cyclades_port *info = container_of(port, struct cyclades_port,
+			port);
+
+	return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD;
+}
+
+static void cyz_dtr_rts(struct tty_port *port, int raise)
+{
+	struct cyclades_port *info = container_of(port, struct cyclades_port,
+			port);
+	struct cyclades_card *cinfo = info->card;
+	struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
+	int ret, channel = info->line - cinfo->first_line;
+	u32 rs;
+
+	rs = readl(&ch_ctrl->rs_control);
+	if (raise)
+		rs |= C_RS_RTS | C_RS_DTR;
+	else
+		rs &= ~(C_RS_RTS | C_RS_DTR);
+	cy_writel(&ch_ctrl->rs_control, rs);
+	ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L);
+	if (ret != 0)
+		printk(KERN_ERR "%s: retval on ttyC%d was %x\n",
+				__func__, info->line, ret);
+#ifdef CY_DEBUG_DTR
+	printk(KERN_DEBUG "%s: raising Z DTR\n", __func__);
+#endif
+}
+
+static const struct tty_port_operations cyy_port_ops = {
+	.carrier_raised = cyy_carrier_raised,
+	.dtr_rts = cyy_dtr_rts,
+	.shutdown = cy_do_close,
+};
+
+static const struct tty_port_operations cyz_port_ops = {
+	.carrier_raised = cyz_carrier_raised,
+	.dtr_rts = cyz_dtr_rts,
+	.shutdown = cy_do_close,
+};
+
 /*
  * ---------------------------------------------------------------------
  * cy_init() and friends
@@ -4321,8 +3129,7 @@ static void cy_hangup(struct tty_struct *tty)
 static int __devinit cy_init_card(struct cyclades_card *cinfo)
 {
 	struct cyclades_port *info;
-	unsigned int port;
-	unsigned short chip_number;
+	unsigned int channel, port;
 
 	spin_lock_init(&cinfo->card_lock);
 	cinfo->intr_enabled = 0;
@@ -4334,9 +3141,9 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
 		return -ENOMEM;
 	}
 
-	for (port = cinfo->first_line; port < cinfo->first_line + cinfo->nports;
-			port++) {
-		info = &cinfo->ports[port - cinfo->first_line];
+	for (channel = 0, port = cinfo->first_line; channel < cinfo->nports;
+			channel++, port++) {
+		info = &cinfo->ports[channel];
 		tty_port_init(&info->port);
 		info->magic = CYCLADES_MAGIC;
 		info->card = cinfo;
@@ -4346,10 +3153,19 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
 		info->port.close_delay = 5 * HZ / 10;
 		info->port.flags = STD_COM_FLAGS;
 		init_completion(&info->shutdown_wait);
-		init_waitqueue_head(&info->delta_msr_wait);
 
 		if (cy_is_Z(cinfo)) {
+			struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS;
+			struct ZFW_CTRL *zfw_ctrl;
+
+			info->port.ops = &cyz_port_ops;
 			info->type = PORT_STARTECH;
+
+			zfw_ctrl = cinfo->base_addr +
+				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
+			info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel];
+			info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
+
 			if (cinfo->hw_ver == ZO_V1)
 				info->xmit_fifo_size = CYZ_FIFO_SIZE;
 			else
@@ -4359,17 +3175,20 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
 				cyz_rx_restart, (unsigned long)info);
 #endif
 		} else {
+			unsigned short chip_number;
 			int index = cinfo->bus_index;
+
+			info->port.ops = &cyy_port_ops;
 			info->type = PORT_CIRRUS;
 			info->xmit_fifo_size = CyMAX_CHAR_FIFO;
 			info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
 			info->cor2 = CyETC;
 			info->cor3 = 0x08;	/* _very_ small rcv threshold */
 
-			chip_number = (port - cinfo->first_line) / 4;
-			info->chip_rev = readb(cinfo->base_addr +
-				      (cy_chip_offset[chip_number] << index) +
-				      (CyGFRCR << index));
+			chip_number = channel / CyPORTS_PER_CHIP;
+			info->u.cyy.base_addr = cinfo->base_addr +
+				(cy_chip_offset[chip_number] << index);
+			info->chip_rev = cyy_readb(info, CyGFRCR);
 
 			if (info->chip_rev >= CD1400_REV_J) {
 				/* It is a CD1400 rev. J or later */
@@ -4535,7 +3354,7 @@ static int __init cy_detect_isa(void)
 			continue;
 		}
 #ifdef MODULE
-		if (isparam && irq[i])
+		if (isparam && i < NR_CARDS && irq[i])
 			cy_isa_irq = irq[i];
 		else
 #endif
@@ -5060,8 +3879,14 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
 		}
 		cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP;
 	} else {
+		struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
+		struct ZFW_CTRL __iomem *zfw_ctrl;
+
+		zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
+
 		cy_card[card_no].hw_ver = mailbox;
 		cy_card[card_no].num_chips = (unsigned int)-1;
+		cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl;
 #ifdef CONFIG_CYZ_INTR
 		/* allocate IRQ only if board has an IRQ */
 		if (irq != 0 && irq != 255) {
@@ -5191,18 +4016,30 @@ static int cyclades_proc_show(struct seq_file *m, void *v)
 		for (j = 0; j < cy_card[i].nports; j++) {
 			info = &cy_card[i].ports[j];
 
-			if (info->port.count)
+			if (info->port.count) {
+				/* XXX is the ldisc num worth this? */
+				struct tty_struct *tty;
+				struct tty_ldisc *ld;
+				int num = 0;
+				tty = tty_port_tty_get(&info->port);
+				if (tty) {
+					ld = tty_ldisc_ref(tty);
+					if (ld) {
+						num = ld->ops->num;
+						tty_ldisc_deref(ld);
+					}
+					tty_kref_put(tty);
+				}
 				seq_printf(m, "%3d %8lu %10lu %8lu "
-					"%10lu %8lu %9lu %6ld\n", info->line,
+					"%10lu %8lu %9lu %6d\n", info->line,
 					(cur_jifs - info->idle_stats.in_use) /
 					HZ, info->idle_stats.xmit_bytes,
 					(cur_jifs - info->idle_stats.xmit_idle)/
 					HZ, info->idle_stats.recv_bytes,
 					(cur_jifs - info->idle_stats.recv_idle)/
 					HZ, info->idle_stats.overruns,
-					/* FIXME: double check locking */
-					(long)info->port.tty->ldisc->ops->num);
-			else
+					num);
+			} else
 				seq_printf(m, "%3d %8lu %10lu %8lu "
 					"%10lu %8lu %9lu %6ld\n",
 					info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
diff --git a/drivers/char/dtlk.c b/drivers/char/dtlk.c
index 52e06589821..045c930e632 100644
--- a/drivers/char/dtlk.c
+++ b/drivers/char/dtlk.c
@@ -56,6 +56,7 @@
 #include <linux/errno.h>	/* for -EBUSY */
 #include <linux/ioport.h>	/* for request_region */
 #include <linux/delay.h>	/* for loops_per_jiffy */
+#include <linux/sched.h>
 #include <linux/smp_lock.h>	/* cycle_kernel_lock() */
 #include <asm/io.h>		/* for inb_p, outb_p, inb, outb, etc. */
 #include <asm/uaccess.h>	/* for get_user, etc. */
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index ff647ca1c48..dde5134713e 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -30,6 +30,7 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
+#include <linux/sched.h>
 #include <linux/serial.h>
 #include <linux/delay.h>
 #include <linux/ctype.h>
@@ -2239,7 +2240,7 @@ static void do_softint(struct work_struct *work)
 	struct channel *ch = container_of(work, struct channel, tqueue);
 	/* Called in response to a modem change event */
 	if (ch && ch->magic == EPCA_MAGIC) {
-		struct tty_struct *tty = tty_port_tty_get(&ch->port);;
+		struct tty_struct *tty = tty_port_tty_get(&ch->port);
 
 		if (tty && tty->driver_data) {
 			if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) {
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index a5c59fc2b0f..b19d43cd954 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -572,7 +572,7 @@ static void check_modem_status(struct esp_struct *info)
 			info->icount.dcd++;
 		if (status & UART_MSR_DCTS)
 			info->icount.cts++;
-		wake_up_interruptible(&info->delta_msr_wait);
+		wake_up_interruptible(&info->port.delta_msr_wait);
 	}
 
 	if ((info->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
@@ -927,7 +927,7 @@ static void shutdown(struct esp_struct *info)
 	 * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
 	 * here so the queue might never be waken up
 	 */
-	wake_up_interruptible(&info->delta_msr_wait);
+	wake_up_interruptible(&info->port.delta_msr_wait);
 	wake_up_interruptible(&info->break_wait);
 
 	/* stop a DMA transfer on the port being closed */
@@ -1800,7 +1800,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file *file,
 		spin_unlock_irqrestore(&info->lock, flags);
 		while (1) {
 			/* FIXME: convert to new style wakeup */
-			interruptible_sleep_on(&info->delta_msr_wait);
+			interruptible_sleep_on(&info->port.delta_msr_wait);
 			/* see if a signal did it */
 			if (signal_pending(current))
 				return -ERESTARTSYS;
@@ -2452,7 +2452,6 @@ static int __init espserial_init(void)
 		info->config.flow_off = flow_off;
 		info->config.pio_threshold = pio_threshold;
 		info->next_port = ports;
-		init_waitqueue_head(&info->delta_msr_wait);
 		init_waitqueue_head(&info->break_wait);
 		ports = info;
 		printk(KERN_INFO "ttyP%d at 0x%04x (irq = %d) is an ESP ",
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index 9e4e569dc00..d400cbd280f 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -22,6 +22,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/tty.h>
+#include <linux/sched.h>
 #include <linux/serial.h>
 #include <linux/mm.h>
 #include <linux/generic_serial.h>
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
index aac0985a572..31e7c91c2d9 100644
--- a/drivers/char/genrtc.c
+++ b/drivers/char/genrtc.c
@@ -43,6 +43,7 @@
 #define RTC_VERSION	"1.07"
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
 #include <linux/fcntl.h>
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 4a9f3492b92..70a770ac013 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -166,9 +166,8 @@ static irqreturn_t hpet_interrupt(int irq, void *data)
 		unsigned long m, t;
 
 		t = devp->hd_ireqfreq;
-		m = read_counter(&devp->hd_hpet->hpet_mc);
-		write_counter(t + m + devp->hd_hpets->hp_delta,
-			      &devp->hd_timer->hpet_compare);
+		m = read_counter(&devp->hd_timer->hpet_compare);
+		write_counter(t + m, &devp->hd_timer->hpet_compare);
 	}
 
 	if (devp->hd_flags & HPET_SHARED_IRQ)
@@ -504,21 +503,25 @@ static int hpet_ioctl_ieon(struct hpet_dev *devp)
 	g = v | Tn_32MODE_CNF_MASK | Tn_INT_ENB_CNF_MASK;
 
 	if (devp->hd_flags & HPET_PERIODIC) {
-		write_counter(t, &timer->hpet_compare);
 		g |= Tn_TYPE_CNF_MASK;
-		v |= Tn_TYPE_CNF_MASK;
-		writeq(v, &timer->hpet_config);
-		v |= Tn_VAL_SET_CNF_MASK;
+		v |= Tn_TYPE_CNF_MASK | Tn_VAL_SET_CNF_MASK;
 		writeq(v, &timer->hpet_config);
 		local_irq_save(flags);
 
-		/* NOTE:  what we modify here is a hidden accumulator
+		/*
+		 * NOTE: First we modify the hidden accumulator
 		 * register supported by periodic-capable comparators.
 		 * We never want to modify the (single) counter; that
-		 * would affect all the comparators.
+		 * would affect all the comparators. The value written
+		 * is the counter value when the first interrupt is due.
 		 */
 		m = read_counter(&hpet->hpet_mc);
 		write_counter(t + m + hpetp->hp_delta, &timer->hpet_compare);
+		/*
+		 * Then we modify the comparator, indicating the period
+		 * for subsequent interrupt.
+		 */
+		write_counter(t, &timer->hpet_compare);
 	} else {
 		local_irq_save(flags);
 		m = read_counter(&hpet->hpet_mc);
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 25ce15bb1c0..a632f25f144 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -678,7 +678,7 @@ int hvc_poll(struct hvc_struct *hp)
 EXPORT_SYMBOL_GPL(hvc_poll);
 
 /**
- * hvc_resize() - Update terminal window size information.
+ * __hvc_resize() - Update terminal window size information.
  * @hp:		HVC console pointer
  * @ws:		Terminal window size structure
  *
@@ -687,12 +687,12 @@ EXPORT_SYMBOL_GPL(hvc_poll);
  *
  * Locking:	Locking free; the function MUST be called holding hp->lock
  */
-void hvc_resize(struct hvc_struct *hp, struct winsize ws)
+void __hvc_resize(struct hvc_struct *hp, struct winsize ws)
 {
 	hp->ws = ws;
 	schedule_work(&hp->tty_resize);
 }
-EXPORT_SYMBOL_GPL(hvc_resize);
+EXPORT_SYMBOL_GPL(__hvc_resize);
 
 /*
  * This kthread is either polling or interrupt driven.  This is determined by
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h
index 3c85d78c975..10950ca706d 100644
--- a/drivers/char/hvc_console.h
+++ b/drivers/char/hvc_console.h
@@ -28,6 +28,7 @@
 #define HVC_CONSOLE_H
 #include <linux/kref.h>
 #include <linux/tty.h>
+#include <linux/spinlock.h>
 
 /*
  * This is the max number of console adapters that can/will be found as
@@ -88,7 +89,16 @@ int hvc_poll(struct hvc_struct *hp);
 void hvc_kick(void);
 
 /* Resize hvc tty terminal window */
-extern void hvc_resize(struct hvc_struct *hp, struct winsize ws);
+extern void __hvc_resize(struct hvc_struct *hp, struct winsize ws);
+
+static inline void hvc_resize(struct hvc_struct *hp, struct winsize ws)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&hp->lock, flags);
+	__hvc_resize(hp, ws);
+	spin_unlock_irqrestore(&hp->lock, flags);
+}
 
 /* default notifier for irq based notification */
 extern int notifier_add_irq(struct hvc_struct *hp, int data);
diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c
index 0ecac7e532f..b8a5d654d3d 100644
--- a/drivers/char/hvc_iucv.c
+++ b/drivers/char/hvc_iucv.c
@@ -273,7 +273,9 @@ static int hvc_iucv_write(struct hvc_iucv_private *priv,
 	case MSG_TYPE_WINSIZE:
 		if (rb->mbuf->datalen != sizeof(struct winsize))
 			break;
-		hvc_resize(priv->hvc, *((struct winsize *) rb->mbuf->data));
+		/* The caller must ensure that the hvc is locked, which
+		 * is the case when called from hvc_iucv_get_chars() */
+		__hvc_resize(priv->hvc, *((struct winsize *) rb->mbuf->data));
 		break;
 
 	case MSG_TYPE_ERROR:	/* ignored ... */
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index eba999f8598..a6ee32b599a 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -55,7 +55,7 @@ static inline void notify_daemon(void)
 	notify_remote_via_evtchn(xen_start_info->console.domU.evtchn);
 }
 
-static int write_console(uint32_t vtermno, const char *data, int len)
+static int __write_console(const char *data, int len)
 {
 	struct xencons_interface *intf = xencons_interface();
 	XENCONS_RING_IDX cons, prod;
@@ -76,6 +76,29 @@ static int write_console(uint32_t vtermno, const char *data, int len)
 	return sent;
 }
 
+static int write_console(uint32_t vtermno, const char *data, int len)
+{
+	int ret = len;
+
+	/*
+	 * Make sure the whole buffer is emitted, polling if
+	 * necessary.  We don't ever want to rely on the hvc daemon
+	 * because the most interesting console output is when the
+	 * kernel is crippled.
+	 */
+	while (len) {
+		int sent = __write_console(data, len);
+		
+		data += sent;
+		len -= sent;
+
+		if (unlikely(len))
+			HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
+	}
+
+	return ret;
+}
+
 static int read_console(uint32_t vtermno, char *buf, int len)
 {
 	struct xencons_interface *intf = xencons_interface();
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 82367262f3a..5c2d13c6e18 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -174,7 +174,7 @@ static const struct file_operations rng_chrdev_ops = {
 static struct miscdevice rng_miscdev = {
 	.minor		= RNG_MISCDEV_MINOR,
 	.name		= RNG_MODULE_NAME,
-	.devnode	= "hwrng",
+	.nodename	= "hwrng",
 	.fops		= &rng_chrdev_ops,
 };
 
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 00dd3de1be5..06aad0831c7 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -116,7 +116,7 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENOENT;
 
-	mem = request_mem_region(res->start, res->end - res->start + 1,
+	mem = request_mem_region(res->start, resource_size(res),
 				 pdev->name);
 	if (mem == NULL) {
 		ret = -EBUSY;
@@ -124,7 +124,7 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
 	}
 
 	dev_set_drvdata(&pdev->dev, mem);
-	rng_base = ioremap(res->start, res->end - res->start + 1);
+	rng_base = ioremap(res->start, resource_size(res));
 	if (!rng_base) {
 		ret = -ENOMEM;
 		goto err_ioremap;
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 32216b62324..915157fcff9 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -51,7 +51,7 @@ static void register_buffer(void)
 
 	sg_init_one(&sg, random_data+data_left, RANDOM_DATA_SIZE-data_left);
 	/* There should always be room for one buffer. */
-	if (vq->vq_ops->add_buf(vq, &sg, 0, 1, random_data) != 0)
+	if (vq->vq_ops->add_buf(vq, &sg, 0, 1, random_data) < 0)
 		BUG();
 	vq->vq_ops->kick(vq);
 }
@@ -116,7 +116,7 @@ static int virtrng_probe(struct virtio_device *vdev)
 	return 0;
 }
 
-static void virtrng_remove(struct virtio_device *vdev)
+static void __devexit virtrng_remove(struct virtio_device *vdev)
 {
 	vdev->config->reset(vdev);
 	hwrng_unregister(&virtio_hwrng);
diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c
index 41fc11dc921..65545de3dbf 100644
--- a/drivers/char/ipmi/ipmi_devintf.c
+++ b/drivers/char/ipmi/ipmi_devintf.c
@@ -36,6 +36,7 @@
 #include <linux/errno.h>
 #include <asm/system.h>
 #include <linux/poll.h>
+#include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 #include <linux/ipmi.h>
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 09050797c76..ec5e3f8df64 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -35,6 +35,7 @@
 #include <linux/errno.h>
 #include <asm/system.h>
 #include <linux/poll.h>
+#include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c
index a261bd735df..2e66b5f773d 100644
--- a/drivers/char/ipmi/ipmi_poweroff.c
+++ b/drivers/char/ipmi/ipmi_poweroff.c
@@ -691,7 +691,7 @@ static struct ctl_table_header *ipmi_table_header;
 /*
  * Startup and shutdown functions.
  */
-static int ipmi_poweroff_init(void)
+static int __init ipmi_poweroff_init(void)
 {
 	int rv;
 
@@ -725,7 +725,7 @@ static int ipmi_poweroff_init(void)
 }
 
 #ifdef MODULE
-static __exit void ipmi_poweroff_cleanup(void)
+static void __exit ipmi_poweroff_cleanup(void)
 {
 	int rv;
 
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 4f1f4cd670d..426bfdd7f3e 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -846,37 +846,53 @@ static int isicom_carrier_raised(struct tty_port *port)
 	return (ip->status & ISI_DCD)?1 : 0;
 }
 
-static int isicom_open(struct tty_struct *tty, struct file *filp)
+static struct tty_port *isicom_find_port(struct tty_struct *tty)
 {
 	struct isi_port *port;
 	struct isi_board *card;
 	unsigned int board;
-	int error, line;
+	int line = tty->index;
 
-	line = tty->index;
 	if (line < 0 || line > PORT_COUNT-1)
-		return -ENODEV;
+		return NULL;
 	board = BOARD(line);
 	card = &isi_card[board];
 
 	if (!(card->status & FIRMWARE_LOADED))
-		return -ENODEV;
+		return NULL;
 
 	/*  open on a port greater than the port count for the card !!! */
 	if (line > ((board * 16) + card->port_count - 1))
-		return -ENODEV;
+		return NULL;
 
 	port = &isi_ports[line];
 	if (isicom_paranoia_check(port, tty->name, "isicom_open"))
-		return -ENODEV;
+		return NULL;
 
+	return &port->port;
+}
+	
+static int isicom_open(struct tty_struct *tty, struct file *filp)
+{
+	struct isi_port *port;
+	struct isi_board *card;
+	struct tty_port *tport;
+	int error = 0;
+
+	tport = isicom_find_port(tty);
+	if (tport == NULL)
+		return -ENODEV;
+	port = container_of(tport, struct isi_port, port);
+	card = &isi_card[BOARD(tty->index)];
 	isicom_setup_board(card);
 
 	/* FIXME: locking on port.count etc */
 	port->port.count++;
 	tty->driver_data = port;
 	tty_port_tty_set(&port->port, tty);
-	error = isicom_setup_port(tty);
+	/* FIXME: Locking on Initialized flag */
+	if (!test_bit(ASYNCB_INITIALIZED, &tport->flags))
+		error = isicom_setup_port(tty);
 	if (error == 0)
 		error = tty_port_block_til_ready(&port->port, tty, filp);
 	return error;
@@ -952,19 +968,12 @@ static void isicom_flush_buffer(struct tty_struct *tty)
 	tty_wakeup(tty);
 }
 
-static void isicom_close(struct tty_struct *tty, struct file *filp)
+static void isicom_close_port(struct tty_port *port)
 {
-	struct isi_port *ip = tty->driver_data;
-	struct tty_port *port = &ip->port;
-	struct isi_board *card;
+	struct isi_port *ip = container_of(port, struct isi_port, port);
+	struct isi_board *card = ip->card;
 	unsigned long flags;
 
-	BUG_ON(!ip);
-
-	card = ip->card;
-	if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
-		return;
-
 	/* indicate to the card that no more data can be received
 	   on this port */
 	spin_lock_irqsave(&card->card_lock, flags);
@@ -974,9 +983,19 @@ static void isicom_close(struct tty_struct *tty, struct file *filp)
 	}
 	isicom_shutdown_port(ip);
 	spin_unlock_irqrestore(&card->card_lock, flags);
+}
+
+static void isicom_close(struct tty_struct *tty, struct file *filp)
+{
+	struct isi_port *ip = tty->driver_data;
+	struct tty_port *port = &ip->port;
+	if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
+		return;
 
+	if (tty_port_close_start(port, tty, filp) == 0)
+		return;
+	isicom_close_port(port);
 	isicom_flush_buffer(tty);
-	
 	tty_port_close_end(port, tty);
 }
 
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index ab2f3349c5c..402838f4083 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -19,6 +19,7 @@
 /*****************************************************************************/
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/interrupt.h>
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 737be953cc5..950837cf9e9 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -1249,7 +1249,7 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
 
 	if (keycode >= NR_KEYS)
 		if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
-			keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
+			keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
 		else
 			return;
 	else
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 0491cdf63f2..a074fceb67d 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -301,7 +301,7 @@ static inline int private_mapping_ok(struct vm_area_struct *vma)
 }
 #endif
 
-static struct vm_operations_struct mmap_mem_ops = {
+static const struct vm_operations_struct mmap_mem_ops = {
 #ifdef CONFIG_HAVE_IOREMAP_PROT
 	.access = generic_access_phys
 #endif
@@ -690,7 +690,7 @@ static ssize_t read_zero(struct file * file, char __user * buf,
 
 		if (chunk > PAGE_SIZE)
 			chunk = PAGE_SIZE;	/* Just for latency reasons */
-		unwritten = clear_user(buf, chunk);
+		unwritten = __clear_user(buf, chunk);
 		written += chunk - unwritten;
 		if (unwritten)
 			break;
@@ -866,24 +866,25 @@ static const struct file_operations kmsg_fops = {
 
 static const struct memdev {
 	const char *name;
+	mode_t mode;
 	const struct file_operations *fops;
 	struct backing_dev_info *dev_info;
 } devlist[] = {
-	[ 1] = { "mem", &mem_fops, &directly_mappable_cdev_bdi },
+	 [1] = { "mem", 0, &mem_fops, &directly_mappable_cdev_bdi },
 #ifdef CONFIG_DEVKMEM
-	[ 2] = { "kmem", &kmem_fops, &directly_mappable_cdev_bdi },
+	 [2] = { "kmem", 0, &kmem_fops, &directly_mappable_cdev_bdi },
 #endif
-	[ 3] = {"null", &null_fops, NULL },
+	 [3] = { "null", 0666, &null_fops, NULL },
 #ifdef CONFIG_DEVPORT
-	[ 4] = { "port", &port_fops, NULL },
+	 [4] = { "port", 0, &port_fops, NULL },
 #endif
-	[ 5] = { "zero", &zero_fops, &zero_bdi },
-	[ 7] = { "full", &full_fops, NULL },
-	[ 8] = { "random", &random_fops, NULL },
-	[ 9] = { "urandom", &urandom_fops, NULL },
-	[11] = { "kmsg", &kmsg_fops, NULL },
+	 [5] = { "zero", 0666, &zero_fops, &zero_bdi },
+	 [7] = { "full", 0666, &full_fops, NULL },
+	 [8] = { "random", 0666, &random_fops, NULL },
+	 [9] = { "urandom", 0666, &urandom_fops, NULL },
+	[11] = { "kmsg", 0, &kmsg_fops, NULL },
 #ifdef CONFIG_CRASH_DUMP
-	[12] = { "oldmem", &oldmem_fops, NULL },
+	[12] = { "oldmem", 0, &oldmem_fops, NULL },
 #endif
 };
 
@@ -920,6 +921,13 @@ static const struct file_operations memory_fops = {
 	.open		= memory_open,
 };
 
+static char *mem_devnode(struct device *dev, mode_t *mode)
+{
+	if (mode && devlist[MINOR(dev->devt)].mode)
+		*mode = devlist[MINOR(dev->devt)].mode;
+	return NULL;
+}
+
 static struct class *mem_class;
 
 static int __init chr_dev_init(void)
@@ -935,6 +943,7 @@ static int __init chr_dev_init(void)
 		printk("unable to get major %d for memory devs\n", MEM_MAJOR);
 
 	mem_class = class_create(THIS_MODULE, "mem");
+	mem_class->devnode = mem_devnode;
 	for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
 		if (!devlist[minor].name)
 			continue;
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 62c99fa59e2..07fa612a58d 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -91,7 +91,7 @@ static int misc_seq_show(struct seq_file *seq, void *v)
 }
 
 
-static struct seq_operations misc_seq_ops = {
+static const struct seq_operations misc_seq_ops = {
 	.start = misc_seq_start,
 	.next  = misc_seq_next,
 	.stop  = misc_seq_stop,
@@ -263,12 +263,14 @@ int misc_deregister(struct miscdevice *misc)
 EXPORT_SYMBOL(misc_register);
 EXPORT_SYMBOL(misc_deregister);
 
-static char *misc_nodename(struct device *dev)
+static char *misc_devnode(struct device *dev, mode_t *mode)
 {
 	struct miscdevice *c = dev_get_drvdata(dev);
 
-	if (c->devnode)
-		return kstrdup(c->devnode, GFP_KERNEL);
+	if (mode && c->mode)
+		*mode = c->mode;
+	if (c->nodename)
+		return kstrdup(c->nodename, GFP_KERNEL);
 	return NULL;
 }
 
@@ -287,7 +289,7 @@ static int __init misc_init(void)
 	err = -EIO;
 	if (register_chrdev(MISC_MAJOR,"misc",&misc_fops))
 		goto fail_printk;
-	misc_class->nodename = misc_nodename;
+	misc_class->devnode = misc_devnode;
 	return 0;
 
 fail_printk:
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 30f095a8c2d..1997270bb6f 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -239,7 +239,7 @@ mspec_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	return VM_FAULT_NOPAGE;
 }
 
-static struct vm_operations_struct mspec_vm_ops = {
+static const struct vm_operations_struct mspec_vm_ops = {
 	.open = mspec_open,
 	.close = mspec_close,
 	.fault = mspec_fault,
diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 94ad2c3bfc4..a4ec50c9507 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -281,12 +281,6 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 		case IOCTL_MW_REGISTER_IPC: {
 			unsigned int ipcnum = (unsigned int) ioarg;
 	
-			PRINTK_3(TRACE_MWAVE,
-				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
-				" ipcnum %x entry usIntCount %x\n",
-				ipcnum,
-				pDrvData->IPCs[ipcnum].usIntCount);
-	
 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
@@ -295,6 +289,12 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 						ipcnum);
 				return -EINVAL;
 			}
+			PRINTK_3(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
+				" ipcnum %x entry usIntCount %x\n",
+				ipcnum,
+				pDrvData->IPCs[ipcnum].usIntCount);
+
 			lock_kernel();
 			pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 			pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
@@ -310,11 +310,6 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 		case IOCTL_MW_GET_IPC: {
 			unsigned int ipcnum = (unsigned int) ioarg;
 	
-			PRINTK_3(TRACE_MWAVE,
-				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
-				" ipcnum %x, usIntCount %x\n",
-				ipcnum,
-				pDrvData->IPCs[ipcnum].usIntCount);
 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
@@ -322,6 +317,11 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 						" Invalid ipcnum %x\n", ipcnum);
 				return -EINVAL;
 			}
+			PRINTK_3(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
+				" ipcnum %x, usIntCount %x\n",
+				ipcnum,
+				pDrvData->IPCs[ipcnum].usIntCount);
 	
 			lock_kernel();
 			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index dbf8d52f31d..5e28d39b9e8 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -48,7 +48,7 @@
 
 #include "mxser.h"
 
-#define	MXSER_VERSION	"2.0.4"		/* 1.12 */
+#define	MXSER_VERSION	"2.0.5"		/* 1.14 */
 #define	MXSERMAJOR	 174
 
 #define MXSER_BOARDS		4	/* Max. boards */
@@ -69,6 +69,7 @@
 #define PCI_DEVICE_ID_POS104UL	0x1044
 #define PCI_DEVICE_ID_CB108	0x1080
 #define PCI_DEVICE_ID_CP102UF	0x1023
+#define PCI_DEVICE_ID_CP112UL	0x1120
 #define PCI_DEVICE_ID_CB114	0x1142
 #define PCI_DEVICE_ID_CP114UL	0x1143
 #define PCI_DEVICE_ID_CB134I	0x1341
@@ -139,7 +140,8 @@ static const struct mxser_cardinfo mxser_cards[] = {
 	{ "CP-138U series",	8, },
 	{ "POS-104UL series",	4, },
 	{ "CP-114UL series",	4, },
-/*30*/	{ "CP-102UF series",	2, }
+/*30*/	{ "CP-102UF series",	2, },
+	{ "CP-112UL series",	2, },
 };
 
 /* driver_data correspond to the lines in the structure above
@@ -170,6 +172,7 @@ static struct pci_device_id mxser_pcibrds[] = {
 	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL),	.driver_data = 28 },
 	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL),	.driver_data = 29 },
 	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF),	.driver_data = 30 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP112UL),	.driver_data = 31 },
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
@@ -258,7 +261,6 @@ struct mxser_port {
 	struct mxser_mon mon_data;
 
 	spinlock_t slock;
-	wait_queue_head_t delta_msr_wait;
 };
 
 struct mxser_board {
@@ -818,7 +820,7 @@ static void mxser_check_modem_status(struct tty_struct *tty,
 	if (status & UART_MSR_DCTS)
 		port->icount.cts++;
 	port->mon_data.modem_status = status;
-	wake_up_interruptible(&port->delta_msr_wait);
+	wake_up_interruptible(&port->port.delta_msr_wait);
 
 	if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
 		if (status & UART_MSR_DCD)
@@ -973,7 +975,7 @@ static void mxser_shutdown(struct tty_struct *tty)
 	 * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
 	 * here so the queue might never be waken up
 	 */
-	wake_up_interruptible(&info->delta_msr_wait);
+	wake_up_interruptible(&info->port.delta_msr_wait);
 
 	/*
 	 * Free the IRQ, if necessary
@@ -1073,34 +1075,17 @@ static void mxser_flush_buffer(struct tty_struct *tty)
 }
 
 
-/*
- * This routine is called when the serial port gets closed.  First, we
- * wait for the last remaining data to be sent.  Then, we unlink its
- * async structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- */
-static void mxser_close(struct tty_struct *tty, struct file *filp)
+static void mxser_close_port(struct tty_struct *tty, struct tty_port *port)
 {
-	struct mxser_port *info = tty->driver_data;
-	struct tty_port *port = &info->port;
-
+	struct mxser_port *info = container_of(port, struct mxser_port, port);
 	unsigned long timeout;
-
-	if (tty->index == MXSER_PORTS)
-		return;
-	if (!info)
-		return;
-
-	if (tty_port_close_start(port, tty, filp) == 0)
-		return;
-
 	/*
 	 * Save the termios structure, since this port may have
 	 * separate termios for callout and dialin.
 	 *
 	 * FIXME: Can this go ?
 	 */
-	if (info->port.flags & ASYNC_NORMAL_ACTIVE)
+	if (port->flags & ASYNC_NORMAL_ACTIVE)
 		info->normal_termios = *tty->termios;
 	/*
 	 * At this point we stop accepting input.  To do this, we
@@ -1112,7 +1097,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 	if (info->board->chip_flag)
 		info->IER &= ~MOXA_MUST_RECV_ISR;
 
-	if (info->port.flags & ASYNC_INITIALIZED) {
+	if (port->flags & ASYNC_INITIALIZED) {
 		outb(info->IER, info->ioaddr + UART_IER);
 		/*
 		 * Before we drop DTR, make sure the UART transmitter
@@ -1127,8 +1112,26 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 		}
 	}
 	mxser_shutdown(tty);
-	mxser_flush_buffer(tty);
 
+}
+
+/*
+ * This routine is called when the serial port gets closed.  First, we
+ * wait for the last remaining data to be sent.  Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ */
+static void mxser_close(struct tty_struct *tty, struct file *filp)
+{
+	struct mxser_port *info = tty->driver_data;
+	struct tty_port *port = &info->port;
+
+	if (tty->index == MXSER_PORTS)
+		return;
+	if (tty_port_close_start(port, tty, filp) == 0)
+		return;
+	mxser_close_port(tty, port);
+	mxser_flush_buffer(tty);
 	/* Right now the tty_port set is done outside of the close_end helper
 	   as we don't yet have everyone using refcounts */	
 	tty_port_close_end(port, tty);
@@ -1761,7 +1764,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
 		cnow = info->icount;	/* note the counters on entry */
 		spin_unlock_irqrestore(&info->slock, flags);
 
-		return wait_event_interruptible(info->delta_msr_wait,
+		return wait_event_interruptible(info->port.delta_msr_wait,
 				mxser_cflags_changed(info, arg, &cnow));
 	/*
 	 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
@@ -1803,7 +1806,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
 
 		lock_kernel();
 		len = mxser_chars_in_buffer(tty);
-		lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
+		lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
 		len += (lsr ? 0 : 1);
 		unlock_kernel();
 
@@ -2413,7 +2416,6 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
 		info->port.close_delay = 5 * HZ / 10;
 		info->port.closing_wait = 30 * HZ;
 		info->normal_termios = mxvar_sdriver->init_termios;
-		init_waitqueue_head(&info->delta_msr_wait);
 		memset(&info->mon_data, 0, sizeof(struct mxser_mon));
 		info->err_shadow = 0;
 		spin_lock_init(&info->slock);
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index 4e28b35024e..2e50f4dfc79 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -272,7 +272,8 @@ static inline int is_continuation(unsigned char c, struct tty_struct *tty)
  *
  *	This is a helper function that handles one output character
  *	(including special characters like TAB, CR, LF, etc.),
- *	putting the results in the tty driver's write buffer.
+ *	doing OPOST processing and putting the results in the
+ *	tty driver's write buffer.
  *
  *	Note that Linux currently ignores TABDLY, CRDLY, VTDLY, FFDLY
  *	and NLDLY.  They simply aren't relevant in the world today.
@@ -350,8 +351,9 @@ static int do_output_char(unsigned char c, struct tty_struct *tty, int space)
  *	@c: character (or partial unicode symbol)
  *	@tty: terminal device
  *
- *	Perform OPOST processing.  Returns -1 when the output device is
- *	full and the character must be retried.
+ *	Output one character with OPOST processing.
+ *	Returns -1 when the output device is full and the character
+ *	must be retried.
  *
  *	Locking: output_lock to protect column state and space left
  *		 (also, this is called from n_tty_write under the
@@ -377,8 +379,11 @@ static int process_output(unsigned char c, struct tty_struct *tty)
 /**
  *	process_output_block		-	block post processor
  *	@tty: terminal device
- *	@inbuf: user buffer
- *	@nr: number of bytes
+ *	@buf: character buffer
+ *	@nr: number of bytes to output
+ *
+ *	Output a block of characters with OPOST processing.
+ *	Returns the number of characters output.
  *
  *	This path is used to speed up block console writes, among other
  *	things when processing blocks of output data. It handles only
@@ -571,33 +576,23 @@ static void process_echoes(struct tty_struct *tty)
 				break;
 
 			default:
-				if (iscntrl(op)) {
-					if (L_ECHOCTL(tty)) {
-						/*
-						 * Ensure there is enough space
-						 * for the whole ctrl pair.
-						 */
-						if (space < 2) {
-							no_space_left = 1;
-							break;
-						}
-						tty_put_char(tty, '^');
-						tty_put_char(tty, op ^ 0100);
-						tty->column += 2;
-						space -= 2;
-					} else {
-						if (!space) {
-							no_space_left = 1;
-							break;
-						}
-						tty_put_char(tty, op);
-						space--;
-					}
-				}
 				/*
-				 * If above falls through, this was an
-				 * undefined op.
+				 * If the op is not a special byte code,
+				 * it is a ctrl char tagged to be echoed
+				 * as "^X" (where X is the letter
+				 * representing the control char).
+				 * Note that we must ensure there is
+				 * enough space for the whole ctrl pair.
+				 *
 				 */
+				if (space < 2) {
+					no_space_left = 1;
+					break;
+				}
+				tty_put_char(tty, '^');
+				tty_put_char(tty, op ^ 0100);
+				tty->column += 2;
+				space -= 2;
 				cp += 2;
 				nr -= 2;
 			}
@@ -605,12 +600,18 @@ static void process_echoes(struct tty_struct *tty)
 			if (no_space_left)
 				break;
 		} else {
-			int retval;
-
-			retval = do_output_char(c, tty, space);
-			if (retval < 0)
-				break;
-			space -= retval;
+			if (O_OPOST(tty) &&
+			    !(test_bit(TTY_HW_COOK_OUT, &tty->flags))) {
+				int retval = do_output_char(c, tty, space);
+				if (retval < 0)
+					break;
+				space -= retval;
+			} else {
+				if (!space)
+					break;
+				tty_put_char(tty, c);
+				space -= 1;
+			}
 			cp += 1;
 			nr -= 1;
 		}
@@ -798,8 +799,8 @@ static void echo_char_raw(unsigned char c, struct tty_struct *tty)
  *	Echo user input back onto the screen. This must be called only when
  *	L_ECHO(tty) is true. Called from the driver receive_buf path.
  *
- *	This variant tags control characters to be possibly echoed as
- *	as "^X" (where X is the letter representing the control char).
+ *	This variant tags control characters to be echoed as "^X"
+ *	(where X is the letter representing the control char).
  *
  *	Locking: echo_lock to protect the echo buffer
  */
@@ -812,7 +813,7 @@ static void echo_char(unsigned char c, struct tty_struct *tty)
 		add_echo_byte(ECHO_OP_START, tty);
 		add_echo_byte(ECHO_OP_START, tty);
 	} else {
-		if (iscntrl(c) && c != '\t')
+		if (L_ECHOCTL(tty) && iscntrl(c) && c != '\t')
 			add_echo_byte(ECHO_OP_START, tty);
 		add_echo_byte(c, tty);
 	}
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index ec58d8c387f..d3400b20444 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -48,6 +48,7 @@
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
+#include <linux/sched.h>
 #include <linux/serial.h>
 #include <linux/interrupt.h>
 #include <linux/kmod.h>
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index 881934c068c..c250a31efa5 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -1017,7 +1017,7 @@ static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 		}
 	}
 
-	if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
+	if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
 		DEBUGP(4, dev, "T=0 and count > buffer\n");
 		dev->rbuf[i] = dev->rbuf[i - 1];
 		dev->rbuf[i - 1] = dev->procbyte;
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 53761cefa91..62f282e6763 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -18,6 +18,7 @@
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/fcntl.h>
+#include <linux/sched.h>
 #include <linux/string.h>
 #include <linux/major.h>
 #include <linux/mm.h>
@@ -261,6 +262,9 @@ done:
 	return 0;
 }
 
+/* Traditional BSD devices */
+#ifdef CONFIG_LEGACY_PTYS
+
 static int pty_install(struct tty_driver *driver, struct tty_struct *tty)
 {
 	struct tty_struct *o_tty;
@@ -310,24 +314,6 @@ free_mem_out:
 	return -ENOMEM;
 }
 
-
-static const struct tty_operations pty_ops = {
-	.install = pty_install,
-	.open = pty_open,
-	.close = pty_close,
-	.write = pty_write,
-	.write_room = pty_write_room,
-	.flush_buffer = pty_flush_buffer,
-	.chars_in_buffer = pty_chars_in_buffer,
-	.unthrottle = pty_unthrottle,
-	.set_termios = pty_set_termios,
-	.resize = pty_resize
-};
-
-/* Traditional BSD devices */
-#ifdef CONFIG_LEGACY_PTYS
-static struct tty_driver *pty_driver, *pty_slave_driver;
-
 static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file,
 			 unsigned int cmd, unsigned long arg)
 {
@@ -341,7 +327,12 @@ static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file,
 static int legacy_count = CONFIG_LEGACY_PTY_COUNT;
 module_param(legacy_count, int, 0);
 
-static const struct tty_operations pty_ops_bsd = {
+/*
+ * The master side of a pty can do TIOCSPTLCK and thus
+ * has pty_bsd_ioctl.
+ */
+static const struct tty_operations master_pty_ops_bsd = {
+	.install = pty_install,
 	.open = pty_open,
 	.close = pty_close,
 	.write = pty_write,
@@ -354,8 +345,23 @@ static const struct tty_operations pty_ops_bsd = {
 	.resize = pty_resize
 };
 
+static const struct tty_operations slave_pty_ops_bsd = {
+	.install = pty_install,
+	.open = pty_open,
+	.close = pty_close,
+	.write = pty_write,
+	.write_room = pty_write_room,
+	.flush_buffer = pty_flush_buffer,
+	.chars_in_buffer = pty_chars_in_buffer,
+	.unthrottle = pty_unthrottle,
+	.set_termios = pty_set_termios,
+	.resize = pty_resize
+};
+
 static void __init legacy_pty_init(void)
 {
+	struct tty_driver *pty_driver, *pty_slave_driver;
+
 	if (legacy_count <= 0)
 		return;
 
@@ -383,7 +389,7 @@ static void __init legacy_pty_init(void)
 	pty_driver->init_termios.c_ospeed = 38400;
 	pty_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW;
 	pty_driver->other = pty_slave_driver;
-	tty_set_operations(pty_driver, &pty_ops);
+	tty_set_operations(pty_driver, &master_pty_ops_bsd);
 
 	pty_slave_driver->owner = THIS_MODULE;
 	pty_slave_driver->driver_name = "pty_slave";
@@ -399,7 +405,7 @@ static void __init legacy_pty_init(void)
 	pty_slave_driver->flags = TTY_DRIVER_RESET_TERMIOS |
 					TTY_DRIVER_REAL_RAW;
 	pty_slave_driver->other = pty_driver;
-	tty_set_operations(pty_slave_driver, &pty_ops);
+	tty_set_operations(pty_slave_driver, &slave_pty_ops_bsd);
 
 	if (tty_register_driver(pty_driver))
 		panic("Couldn't register pty driver");
diff --git a/drivers/char/random.c b/drivers/char/random.c
index d8a9255e1a3..04b505e5a5e 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1231,7 +1231,7 @@ static char sysctl_bootid[16];
  * as an ASCII string in the standard UUID format.  If accesses via the
  * sysctl system call, it is returned as 16 bytes of binary data.
  */
-static int proc_do_uuid(ctl_table *table, int write, struct file *filp,
+static int proc_do_uuid(ctl_table *table, int write,
 			void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	ctl_table fake_table;
@@ -1254,7 +1254,7 @@ static int proc_do_uuid(ctl_table *table, int write, struct file *filp,
 	fake_table.data = buf;
 	fake_table.maxlen = sizeof(buf);
 
-	return proc_dostring(&fake_table, write, filp, buffer, lenp, ppos);
+	return proc_dostring(&fake_table, write, buffer, lenp, ppos);
 }
 
 static int uuid_strategy(ctl_table *table,
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 40268db02e2..64acd05f71c 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -261,7 +261,7 @@ static const struct file_operations raw_ctl_fops = {
 
 static struct cdev raw_cdev;
 
-static char *raw_nodename(struct device *dev)
+static char *raw_devnode(struct device *dev, mode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));
 }
@@ -289,7 +289,7 @@ static int __init raw_init(void)
 		ret = PTR_ERR(raw_class);
 		goto error_region;
 	}
-	raw_class->nodename = raw_nodename;
+	raw_class->devnode = raw_devnode;
 	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
 
 	return 0;
diff --git a/drivers/char/rio/riocmd.c b/drivers/char/rio/riocmd.c
index 01f2654d5a2..f121357e5af 100644
--- a/drivers/char/rio/riocmd.c
+++ b/drivers/char/rio/riocmd.c
@@ -32,6 +32,7 @@
 */
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
diff --git a/drivers/char/rio/rioctrl.c b/drivers/char/rio/rioctrl.c
index eecee0f576d..780506326a7 100644
--- a/drivers/char/rio/rioctrl.c
+++ b/drivers/char/rio/rioctrl.c
@@ -31,6 +31,7 @@
 */
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <asm/io.h>
@@ -873,7 +874,7 @@ int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su
 		/*
 		 ** It is important that the product code is an unsigned object!
 		 */
-		if (DownLoad.ProductCode > MAX_PRODUCT) {
+		if (DownLoad.ProductCode >= MAX_PRODUCT) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Bad product code %d passed\n", DownLoad.ProductCode);
 			p->RIOError.Error = NO_SUCH_PRODUCT;
 			return -ENXIO;
diff --git a/drivers/char/rio/riotty.c b/drivers/char/rio/riotty.c
index 2fb49e89b32..47fab7c3307 100644
--- a/drivers/char/rio/riotty.c
+++ b/drivers/char/rio/riotty.c
@@ -33,6 +33,7 @@
 #define __EXPLICIT_DEF_H__
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 171711acf5c..3cfa22d469e 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -343,7 +343,7 @@ static void rc_receive_exc(struct riscom_board const *bp)
 	if (port == NULL)
 		return;
 
-	tty = port->port.tty;
+	tty = tty_port_tty_get(&port->port);
 
 #ifdef RC_REPORT_OVERRUN
 	status = rc_in(bp, CD180_RCSR);
@@ -355,18 +355,18 @@ static void rc_receive_exc(struct riscom_board const *bp)
 #endif
 	ch = rc_in(bp, CD180_RDR);
 	if (!status)
-		return;
+		goto out;
 	if (status & RCSR_TOUT)  {
 		printk(KERN_WARNING "rc%d: port %d: Receiver timeout. "
 				    "Hardware problems ?\n",
 		       board_No(bp), port_No(port));
-		return;
+		goto out;
 
 	} else if (status & RCSR_BREAK)  {
 		printk(KERN_INFO "rc%d: port %d: Handling break...\n",
 		       board_No(bp), port_No(port));
 		flag = TTY_BREAK;
-		if (port->port.flags & ASYNC_SAK)
+		if (tty && (port->port.flags & ASYNC_SAK))
 			do_SAK(tty);
 
 	} else if (status & RCSR_PE)
@@ -380,8 +380,12 @@ static void rc_receive_exc(struct riscom_board const *bp)
 	else
 		flag = TTY_NORMAL;
 
-	tty_insert_flip_char(tty, ch, flag);
-	tty_flip_buffer_push(tty);
+	if (tty) {
+		tty_insert_flip_char(tty, ch, flag);
+		tty_flip_buffer_push(tty);
+	}
+out:
+	tty_kref_put(tty);
 }
 
 static void rc_receive(struct riscom_board const *bp)
@@ -394,7 +398,7 @@ static void rc_receive(struct riscom_board const *bp)
 	if (port == NULL)
 		return;
 
-	tty = port->port.tty;
+	tty = tty_port_tty_get(&port->port);
 
 	count = rc_in(bp, CD180_RDCR);
 
@@ -403,15 +407,14 @@ static void rc_receive(struct riscom_board const *bp)
 #endif
 
 	while (count--)  {
-		if (tty_buffer_request_room(tty, 1) == 0)  {
-			printk(KERN_WARNING "rc%d: port %d: Working around "
-					    "flip buffer overflow.\n",
-			       board_No(bp), port_No(port));
-			break;
-		}
-		tty_insert_flip_char(tty, rc_in(bp, CD180_RDR), TTY_NORMAL);
+		u8 ch = rc_in(bp, CD180_RDR);
+		if (tty)
+			tty_insert_flip_char(tty, ch, TTY_NORMAL);
+	}
+	if (tty) {
+		tty_flip_buffer_push(tty);
+		tty_kref_put(tty);
 	}
-	tty_flip_buffer_push(tty);
 }
 
 static void rc_transmit(struct riscom_board const *bp)
@@ -424,22 +427,22 @@ static void rc_transmit(struct riscom_board const *bp)
 	if (port == NULL)
 		return;
 
-	tty = port->port.tty;
+	tty = tty_port_tty_get(&port->port);
 
 	if (port->IER & IER_TXEMPTY) {
 		/* FIFO drained */
 		rc_out(bp, CD180_CAR, port_No(port));
 		port->IER &= ~IER_TXEMPTY;
 		rc_out(bp, CD180_IER, port->IER);
-		return;
+		goto out;
 	}
 
 	if ((port->xmit_cnt <= 0 && !port->break_length)
-	    || tty->stopped || tty->hw_stopped)  {
+	    || (tty && (tty->stopped || tty->hw_stopped)))  {
 		rc_out(bp, CD180_CAR, port_No(port));
 		port->IER &= ~IER_TXRDY;
 		rc_out(bp, CD180_IER, port->IER);
-		return;
+		goto out;
 	}
 
 	if (port->break_length)  {
@@ -464,7 +467,7 @@ static void rc_transmit(struct riscom_board const *bp)
 			rc_out(bp, CD180_CCR, CCR_CORCHG2);
 			port->break_length = 0;
 		}
-		return;
+		goto out;
 	}
 
 	count = CD180_NFIFO;
@@ -480,8 +483,10 @@ static void rc_transmit(struct riscom_board const *bp)
 		port->IER &= ~IER_TXRDY;
 		rc_out(bp, CD180_IER, port->IER);
 	}
-	if (port->xmit_cnt <= port->wakeup_chars)
+	if (tty && port->xmit_cnt <= port->wakeup_chars)
 		tty_wakeup(tty);
+out:
+	tty_kref_put(tty);
 }
 
 static void rc_check_modem(struct riscom_board const *bp)
@@ -494,37 +499,43 @@ static void rc_check_modem(struct riscom_board const *bp)
 	if (port == NULL)
 		return;
 
-	tty = port->port.tty;
+	tty = tty_port_tty_get(&port->port);
 
 	mcr = rc_in(bp, CD180_MCR);
 	if (mcr & MCR_CDCHG) {
 		if (rc_in(bp, CD180_MSVR) & MSVR_CD)
 			wake_up_interruptible(&port->port.open_wait);
-		else
+		else if (tty)
 			tty_hangup(tty);
 	}
 
 #ifdef RISCOM_BRAIN_DAMAGED_CTS
 	if (mcr & MCR_CTSCHG)  {
 		if (rc_in(bp, CD180_MSVR) & MSVR_CTS)  {
-			tty->hw_stopped = 0;
 			port->IER |= IER_TXRDY;
-			if (port->xmit_cnt <= port->wakeup_chars)
-				tty_wakeup(tty);
+			if (tty) {
+				tty->hw_stopped = 0;
+				if (port->xmit_cnt <= port->wakeup_chars)
+					tty_wakeup(tty);
+			}
 		} else  {
-			tty->hw_stopped = 1;
+			if (tty)
+				tty->hw_stopped = 1;
 			port->IER &= ~IER_TXRDY;
 		}
 		rc_out(bp, CD180_IER, port->IER);
 	}
 	if (mcr & MCR_DSRCHG)  {
 		if (rc_in(bp, CD180_MSVR) & MSVR_DSR)  {
-			tty->hw_stopped = 0;
 			port->IER |= IER_TXRDY;
-			if (port->xmit_cnt <= port->wakeup_chars)
-				tty_wakeup(tty);
+			if (tty) {
+				tty->hw_stopped = 0;
+				if (port->xmit_cnt <= port->wakeup_chars)
+					tty_wakeup(tty);
+			}
 		} else  {
-			tty->hw_stopped = 1;
+			if (tty)
+				tty->hw_stopped = 1;
 			port->IER &= ~IER_TXRDY;
 		}
 		rc_out(bp, CD180_IER, port->IER);
@@ -533,6 +544,7 @@ static void rc_check_modem(struct riscom_board const *bp)
 
 	/* Clear change bits */
 	rc_out(bp, CD180_MCR, 0);
+	tty_kref_put(tty);
 }
 
 /* The main interrupt processing routine */
@@ -632,9 +644,9 @@ static void rc_shutdown_board(struct riscom_board *bp)
  * Setting up port characteristics.
  * Must be called with disabled interrupts
  */
-static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
+static void rc_change_speed(struct tty_struct *tty, struct riscom_board *bp,
+						struct riscom_port *port)
 {
-	struct tty_struct *tty = port->port.tty;
 	unsigned long baud;
 	long tmp;
 	unsigned char cor1 = 0, cor3 = 0;
@@ -781,7 +793,8 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
 }
 
 /* Must be called with interrupts enabled */
-static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port)
+static int rc_setup_port(struct tty_struct *tty, struct riscom_board *bp,
+						struct riscom_port *port)
 {
 	unsigned long flags;
 
@@ -793,11 +806,11 @@ static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port)
 
 	spin_lock_irqsave(&riscom_lock, flags);
 
-	clear_bit(TTY_IO_ERROR, &port->port.tty->flags);
+	clear_bit(TTY_IO_ERROR, &tty->flags);
 	if (port->port.count == 1)
 		bp->count++;
 	port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
-	rc_change_speed(bp, port);
+	rc_change_speed(tty, bp, port);
 	port->port.flags |= ASYNC_INITIALIZED;
 
 	spin_unlock_irqrestore(&riscom_lock, flags);
@@ -898,9 +911,9 @@ static int rc_open(struct tty_struct *tty, struct file *filp)
 
 	port->port.count++;
 	tty->driver_data = port;
-	port->port.tty = tty;
+	tty_port_tty_set(&port->port, tty);
 
-	error = rc_setup_port(bp, port);
+	error = rc_setup_port(tty, bp, port);
 	if (error == 0)
 		error = tty_port_block_til_ready(&port->port, tty, filp);
 	return error;
@@ -921,20 +934,12 @@ static void rc_flush_buffer(struct tty_struct *tty)
 	tty_wakeup(tty);
 }
 
-static void rc_close(struct tty_struct *tty, struct file *filp)
+static void rc_close_port(struct tty_port *port)
 {
-	struct riscom_port *port = tty->driver_data;
-	struct riscom_board *bp;
 	unsigned long flags;
+	struct riscom_port *rp = container_of(port, struct riscom_port, port);
+	struct riscom_board *bp = port_Board(rp);
 	unsigned long timeout;
-
-	if (!port || rc_paranoia_check(port, tty->name, "close"))
-		return;
-
-	bp = port_Board(port);
-	
-	if (tty_port_close_start(&port->port, tty, filp) == 0)
-		return;
 	
 	/*
 	 * At this point we stop accepting input.  To do this, we
@@ -944,31 +949,37 @@ static void rc_close(struct tty_struct *tty, struct file *filp)
 	 */
 
 	spin_lock_irqsave(&riscom_lock, flags);
-	port->IER &= ~IER_RXD;
-	if (port->port.flags & ASYNC_INITIALIZED) {
-		port->IER &= ~IER_TXRDY;
-		port->IER |= IER_TXEMPTY;
-		rc_out(bp, CD180_CAR, port_No(port));
-		rc_out(bp, CD180_IER, port->IER);
+	rp->IER &= ~IER_RXD;
+	if (port->flags & ASYNC_INITIALIZED) {
+		rp->IER &= ~IER_TXRDY;
+		rp->IER |= IER_TXEMPTY;
+		rc_out(bp, CD180_CAR, port_No(rp));
+		rc_out(bp, CD180_IER, rp->IER);
 		/*
 		 * Before we drop DTR, make sure the UART transmitter
 		 * has completely drained; this is especially
 		 * important if there is a transmit FIFO!
 		 */
 		timeout = jiffies + HZ;
-		while (port->IER & IER_TXEMPTY) {
+		while (rp->IER & IER_TXEMPTY) {
 			spin_unlock_irqrestore(&riscom_lock, flags);
-			msleep_interruptible(jiffies_to_msecs(port->timeout));
+			msleep_interruptible(jiffies_to_msecs(rp->timeout));
 			spin_lock_irqsave(&riscom_lock, flags);
 			if (time_after(jiffies, timeout))
 				break;
 		}
 	}
-	rc_shutdown_port(tty, bp, port);
-	rc_flush_buffer(tty);
+	rc_shutdown_port(port->tty, bp, rp);
 	spin_unlock_irqrestore(&riscom_lock, flags);
+}
+
+static void rc_close(struct tty_struct *tty, struct file *filp)
+{
+	struct riscom_port *port = tty->driver_data;
 
-	tty_port_close_end(&port->port, tty);
+	if (!port || rc_paranoia_check(port, tty->name, "close"))
+		return;
+	tty_port_close(&port->port, tty, filp);
 }
 
 static int rc_write(struct tty_struct *tty,
@@ -1170,7 +1181,7 @@ static int rc_send_break(struct tty_struct *tty, int length)
 	return 0;
 }
 
-static int rc_set_serial_info(struct riscom_port *port,
+static int rc_set_serial_info(struct tty_struct *tty, struct riscom_port *port,
 				     struct serial_struct __user *newinfo)
 {
 	struct serial_struct tmp;
@@ -1180,17 +1191,6 @@ static int rc_set_serial_info(struct riscom_port *port,
 	if (copy_from_user(&tmp, newinfo, sizeof(tmp)))
 		return -EFAULT;
 
-#if 0
-	if ((tmp.irq != bp->irq) ||
-	    (tmp.port != bp->base) ||
-	    (tmp.type != PORT_CIRRUS) ||
-	    (tmp.baud_base != (RC_OSCFREQ + CD180_TPC/2) / CD180_TPC) ||
-	    (tmp.custom_divisor != 0) ||
-	    (tmp.xmit_fifo_size != CD180_NFIFO) ||
-	    (tmp.flags & ~RISCOM_LEGAL_FLAGS))
-		return -EINVAL;
-#endif
-
 	change_speed = ((port->port.flags & ASYNC_SPD_MASK) !=
 			(tmp.flags & ASYNC_SPD_MASK));
 
@@ -1212,7 +1212,7 @@ static int rc_set_serial_info(struct riscom_port *port,
 		unsigned long flags;
 
 		spin_lock_irqsave(&riscom_lock, flags);
-		rc_change_speed(bp, port);
+		rc_change_speed(tty, bp, port);
 		spin_unlock_irqrestore(&riscom_lock, flags);
 	}
 	return 0;
@@ -1255,7 +1255,7 @@ static int rc_ioctl(struct tty_struct *tty, struct file *filp,
 		break;
 	case TIOCSSERIAL:
 		lock_kernel();
-		retval = rc_set_serial_info(port, argp);
+		retval = rc_set_serial_info(tty, port, argp);
 		unlock_kernel();
 		break;
 	default:
@@ -1350,21 +1350,12 @@ static void rc_start(struct tty_struct *tty)
 static void rc_hangup(struct tty_struct *tty)
 {
 	struct riscom_port *port = tty->driver_data;
-	struct riscom_board *bp;
-	unsigned long flags;
 
 	if (rc_paranoia_check(port, tty->name, "rc_hangup"))
 		return;
 
-	bp = port_Board(port);
-
-	rc_shutdown_port(tty, bp, port);
-	spin_lock_irqsave(&port->port.lock, flags);
-	port->port.count = 0;
-	port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
-	port->port.tty = NULL;
-	wake_up_interruptible(&port->port.open_wait);
-	spin_unlock_irqrestore(&port->port.lock, flags);
+	rc_shutdown_port(tty, port_Board(port), port);
+	tty_port_hangup(&port->port);
 }
 
 static void rc_set_termios(struct tty_struct *tty,
@@ -1377,7 +1368,7 @@ static void rc_set_termios(struct tty_struct *tty,
 		return;
 
 	spin_lock_irqsave(&riscom_lock, flags);
-	rc_change_speed(port_Board(port), port);
+	rc_change_speed(tty, port_Board(port), port);
 	spin_unlock_irqrestore(&riscom_lock, flags);
 
 	if ((old_termios->c_cflag & CRTSCTS) &&
@@ -1410,6 +1401,7 @@ static const struct tty_operations riscom_ops = {
 
 static const struct tty_port_operations riscom_port_ops = {
 	.carrier_raised = carrier_raised,
+	.shutdown = rc_close_port,
 };
 
 
diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index e0d0f8b2696..bc4ab3e5455 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -74,6 +74,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/spinlock.h>
+#include <linux/sched.h>
 #include <linux/sysctl.h>
 #include <linux/wait.h>
 #include <linux/bcd.h>
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index 33a2b531802..9610861d1f5 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -89,6 +89,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
+#include <linux/sched.h>
 #include <linux/tty.h>
 
 #include <asm/setup.h>
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 5942a9d674c..452370af95d 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -220,8 +220,7 @@ static inline int serial_paranoia_check(struct cyclades_port *info, char *name,
 		return 1;
 	}
 
-	if ((long)info < (long)(&cy_port[0])
-	    || (long)(&cy_port[NR_PORTS]) < (long)info) {
+	if (info < &cy_port[0] || info >= &cy_port[NR_PORTS]) {
 		printk("Warning: cyclades_port out of range for (%s) in %s\n",
 				name, routine);
 		return 1;
@@ -520,15 +519,13 @@ static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id)
 		panic("TxInt on debug port!!!");
 	}
 #endif
-
-	info = &cy_port[channel];
-
 	/* validate the port number (as configured and open) */
 	if ((channel < 0) || (NR_PORTS <= channel)) {
 		base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
 		base_addr[CyTEOIR] = CyNOTRANS;
 		return IRQ_HANDLED;
 	}
+	info = &cy_port[channel];
 	info->last_active = jiffies;
 	if (info->tty == 0) {
 		base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index fd3dced9777..8c262aaf7c2 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -36,6 +36,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/input.h>
 #include <linux/pci.h>
 #include <linux/init.h>
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 53e504f41b2..db6dcfa35ba 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -27,6 +27,7 @@
 /*****************************************************************************/
 
 #include <linux/module.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/tty.h>
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 50eecfe1d72..44203ff599d 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -26,7 +26,7 @@
 #include <linux/proc_fs.h>
 #include <linux/nmi.h>
 #include <linux/quotaops.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/suspend.h>
@@ -252,7 +252,7 @@ static void sysrq_handle_showregs(int key, struct tty_struct *tty)
 	struct pt_regs *regs = get_irq_regs();
 	if (regs)
 		show_regs(regs);
-	perf_counter_print_debug();
+	perf_event_print_debug();
 }
 static struct sysrq_key_op sysrq_showregs_op = {
 	.handler	= sysrq_handle_showregs,
diff --git a/drivers/char/tlclk.c b/drivers/char/tlclk.c
index 8f2284be68e..80ea6bcfffd 100644
--- a/drivers/char/tlclk.c
+++ b/drivers/char/tlclk.c
@@ -32,6 +32,7 @@
 #include <linux/kernel.h>	/* printk() */
 #include <linux/fs.h>		/* everything... */
 #include <linux/errno.h>	/* error codes */
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index b0603b2e568..47c2d276345 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -696,8 +696,7 @@ int __tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
 
 	cmd.header.in = pcrread_header;
 	cmd.params.pcrread_in.pcr_idx = cpu_to_be32(pcr_idx);
-	BUILD_BUG_ON(cmd.header.in.length > READ_PCR_RESULT_SIZE);
-	rc = transmit_cmd(chip, &cmd, cmd.header.in.length,
+	rc = transmit_cmd(chip, &cmd, READ_PCR_RESULT_SIZE,
 			  "attempting to read a pcr value");
 
 	if (rc == 0)
@@ -742,7 +741,7 @@ EXPORT_SYMBOL_GPL(tpm_pcr_read);
  * the module usage count.
  */
 #define TPM_ORD_PCR_EXTEND cpu_to_be32(20)
-#define EXTEND_PCR_SIZE 34
+#define EXTEND_PCR_RESULT_SIZE 34
 static struct tpm_input_header pcrextend_header = {
 	.tag = TPM_TAG_RQU_COMMAND,
 	.length = cpu_to_be32(34),
@@ -760,10 +759,9 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
 		return -ENODEV;
 
 	cmd.header.in = pcrextend_header;
-	BUILD_BUG_ON(be32_to_cpu(cmd.header.in.length) > EXTEND_PCR_SIZE);
 	cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(pcr_idx);
 	memcpy(cmd.params.pcrextend_in.hash, hash, TPM_DIGEST_SIZE);
-	rc = transmit_cmd(chip, &cmd, cmd.header.in.length,
+	rc = transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
 			  "attempting extend a PCR value");
 
 	module_put(chip->dev->driver->owner);
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index 0c2f55a38b9..bf2170fb1cd 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -343,14 +343,14 @@ static int tpm_ascii_bios_measurements_show(struct seq_file *m, void *v)
 	return 0;
 }
 
-static struct seq_operations tpm_ascii_b_measurments_seqops = {
+static const struct seq_operations tpm_ascii_b_measurments_seqops = {
 	.start = tpm_bios_measurements_start,
 	.next = tpm_bios_measurements_next,
 	.stop = tpm_bios_measurements_stop,
 	.show = tpm_ascii_bios_measurements_show,
 };
 
-static struct seq_operations tpm_binary_b_measurments_seqops = {
+static const struct seq_operations tpm_binary_b_measurments_seqops = {
 	.start = tpm_bios_measurements_start,
 	.next = tpm_bios_measurements_next,
 	.stop = tpm_bios_measurements_stop,
diff --git a/drivers/char/tty_buffer.c b/drivers/char/tty_buffer.c
index 3108991c5c8..66fa4e10d76 100644
--- a/drivers/char/tty_buffer.c
+++ b/drivers/char/tty_buffer.c
@@ -402,28 +402,26 @@ static void flush_to_ldisc(struct work_struct *work)
 		container_of(work, struct tty_struct, buf.work.work);
 	unsigned long 	flags;
 	struct tty_ldisc *disc;
-	struct tty_buffer *tbuf, *head;
-	char *char_buf;
-	unsigned char *flag_buf;
 
 	disc = tty_ldisc_ref(tty);
 	if (disc == NULL)	/*  !TTY_LDISC */
 		return;
 
 	spin_lock_irqsave(&tty->buf.lock, flags);
-	/* So we know a flush is running */
-	set_bit(TTY_FLUSHING, &tty->flags);
-	head = tty->buf.head;
-	if (head != NULL) {
-		tty->buf.head = NULL;
-		for (;;) {
-			int count = head->commit - head->read;
+
+	if (!test_and_set_bit(TTY_FLUSHING, &tty->flags)) {
+		struct tty_buffer *head;
+		while ((head = tty->buf.head) != NULL) {
+			int count;
+			char *char_buf;
+			unsigned char *flag_buf;
+
+			count = head->commit - head->read;
 			if (!count) {
 				if (head->next == NULL)
 					break;
-				tbuf = head;
-				head = head->next;
-				tty_buffer_free(tty, tbuf);
+				tty->buf.head = head->next;
+				tty_buffer_free(tty, head);
 				continue;
 			}
 			/* Ldisc or user is trying to flush the buffers
@@ -445,9 +443,9 @@ static void flush_to_ldisc(struct work_struct *work)
 							flag_buf, count);
 			spin_lock_irqsave(&tty->buf.lock, flags);
 		}
-		/* Restore the queue head */
-		tty->buf.head = head;
+		clear_bit(TTY_FLUSHING, &tty->flags);
 	}
+
 	/* We may have a deferred request to flush the input buffer,
 	   if so pull the chain under the lock and empty the queue */
 	if (test_bit(TTY_FLUSHPENDING, &tty->flags)) {
@@ -455,7 +453,6 @@ static void flush_to_ldisc(struct work_struct *work)
 		clear_bit(TTY_FLUSHPENDING, &tty->flags);
 		wake_up(&tty->read_wait);
 	}
-	clear_bit(TTY_FLUSHING, &tty->flags);
 	spin_unlock_irqrestore(&tty->buf.lock, flags);
 
 	tty_ldisc_deref(disc);
@@ -471,7 +468,7 @@ static void flush_to_ldisc(struct work_struct *work)
  */
 void tty_flush_to_ldisc(struct tty_struct *tty)
 {
-	flush_to_ldisc(&tty->buf.work.work);
+	flush_delayed_work(&tty->buf.work);
 }
 
 /**
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a3afa0c387c..59499ee0fe6 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1184,6 +1184,7 @@ int tty_init_termios(struct tty_struct *tty)
 	tty->termios->c_ospeed = tty_termios_baud_rate(tty->termios);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(tty_init_termios);
 
 /**
  *	tty_driver_install_tty() - install a tty entry in the driver
@@ -1386,16 +1387,19 @@ EXPORT_SYMBOL(tty_shutdown);
  *		tty_mutex - sometimes only
  *		takes the file list lock internally when working on the list
  *	of ttys that the driver keeps.
+ *
+ *	This method gets called from a work queue so that the driver private
+ *	cleanup ops can sleep (needed for USB at least)
  */
-static void release_one_tty(struct kref *kref)
+static void release_one_tty(struct work_struct *work)
 {
-	struct tty_struct *tty = container_of(kref, struct tty_struct, kref);
+	struct tty_struct *tty =
+		container_of(work, struct tty_struct, hangup_work);
 	struct tty_driver *driver = tty->driver;
 
-	if (tty->ops->shutdown)
-		tty->ops->shutdown(tty);
-	else
-		tty_shutdown(tty);
+	if (tty->ops->cleanup)
+		tty->ops->cleanup(tty);
+
 	tty->magic = 0;
 	tty_driver_kref_put(driver);
 	module_put(driver->owner);
@@ -1407,6 +1411,21 @@ static void release_one_tty(struct kref *kref)
 	free_tty_struct(tty);
 }
 
+static void queue_release_one_tty(struct kref *kref)
+{
+	struct tty_struct *tty = container_of(kref, struct tty_struct, kref);
+
+	if (tty->ops->shutdown)
+		tty->ops->shutdown(tty);
+	else
+		tty_shutdown(tty);
+
+	/* The hangup queue is now free so we can reuse it rather than
+	   waste a chunk of memory for each port */
+	INIT_WORK(&tty->hangup_work, release_one_tty);
+	schedule_work(&tty->hangup_work);
+}
+
 /**
  *	tty_kref_put		-	release a tty kref
  *	@tty: tty device
@@ -1418,7 +1437,7 @@ static void release_one_tty(struct kref *kref)
 void tty_kref_put(struct tty_struct *tty)
 {
 	if (tty)
-		kref_put(&tty->kref, release_one_tty);
+		kref_put(&tty->kref, queue_release_one_tty);
 }
 EXPORT_SYMBOL(tty_kref_put);
 
@@ -2085,7 +2104,7 @@ static int tioccons(struct file *file)
  *	the generic functionality existed. This piece of history is preserved
  *	in the expected tty API of posix OS's.
  *
- *	Locking: none, the open fle handle ensures it won't go away.
+ *	Locking: none, the open file handle ensures it won't go away.
  */
 
 static int fionbio(struct file *file, int __user *p)
@@ -3056,11 +3075,22 @@ void __init console_init(void)
 	}
 }
 
+static char *tty_devnode(struct device *dev, mode_t *mode)
+{
+	if (!mode)
+		return NULL;
+	if (dev->devt == MKDEV(TTYAUX_MAJOR, 0) ||
+	    dev->devt == MKDEV(TTYAUX_MAJOR, 2))
+		*mode = 0666;
+	return NULL;
+}
+
 static int __init tty_class_init(void)
 {
 	tty_class = class_create(THIS_MODULE, "tty");
 	if (IS_ERR(tty_class))
 		return PTR_ERR(tty_class);
+	tty_class->devnode = tty_devnode;
 	return 0;
 }
 
diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c
index ad6ba4ed280..8e67d5c642a 100644
--- a/drivers/char/tty_ioctl.c
+++ b/drivers/char/tty_ioctl.c
@@ -393,9 +393,7 @@ void tty_termios_encode_baud_rate(struct ktermios *termios,
 		termios->c_cflag |= (BOTHER << IBSHIFT);
 #else
 	if (ifound == -1 || ofound == -1) {
-		static int warned;
-		if (!warned++)
-			printk(KERN_WARNING "tty: Unable to return correct "
+		printk_once(KERN_WARNING "tty: Unable to return correct "
 			  "speed data as your architecture needs updating.\n");
 	}
 #endif
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index e48af9f7921..feb55075819 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -145,48 +145,33 @@ int tty_unregister_ldisc(int disc)
 }
 EXPORT_SYMBOL(tty_unregister_ldisc);
 
-
-/**
- *	tty_ldisc_try_get	-	try and reference an ldisc
- *	@disc: ldisc number
- *
- *	Attempt to open and lock a line discipline into place. Return
- *	the line discipline refcounted or an error.
- */
-
-static struct tty_ldisc *tty_ldisc_try_get(int disc)
+static struct tty_ldisc_ops *get_ldops(int disc)
 {
 	unsigned long flags;
-	struct tty_ldisc *ld;
-	struct tty_ldisc_ops *ldops;
-	int err = -EINVAL;
-
-	ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL);
-	if (ld == NULL)
-		return ERR_PTR(-ENOMEM);
+	struct tty_ldisc_ops *ldops, *ret;
 
 	spin_lock_irqsave(&tty_ldisc_lock, flags);
-	ld->ops = NULL;
+	ret = ERR_PTR(-EINVAL);
 	ldops = tty_ldiscs[disc];
-	/* Check the entry is defined */
 	if (ldops) {
-		/* If the module is being unloaded we can't use it */
-		if (!try_module_get(ldops->owner))
-			err = -EAGAIN;
-		else {
-			/* lock it */
+		ret = ERR_PTR(-EAGAIN);
+		if (try_module_get(ldops->owner)) {
 			ldops->refcount++;
-			ld->ops = ldops;
-			atomic_set(&ld->users, 1);
-			err = 0;
+			ret = ldops;
 		}
 	}
 	spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-	if (err) {
-		kfree(ld);
-		return ERR_PTR(err);
-	}
-	return ld;
+	return ret;
+}
+
+static void put_ldops(struct tty_ldisc_ops *ldops)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&tty_ldisc_lock, flags);
+	ldops->refcount--;
+	module_put(ldops->owner);
+	spin_unlock_irqrestore(&tty_ldisc_lock, flags);
 }
 
 /**
@@ -205,14 +190,31 @@ static struct tty_ldisc *tty_ldisc_try_get(int disc)
 static struct tty_ldisc *tty_ldisc_get(int disc)
 {
 	struct tty_ldisc *ld;
+	struct tty_ldisc_ops *ldops;
 
 	if (disc < N_TTY || disc >= NR_LDISCS)
 		return ERR_PTR(-EINVAL);
-	ld = tty_ldisc_try_get(disc);
-	if (IS_ERR(ld)) {
+
+	/*
+	 * Get the ldisc ops - we may need to request them to be loaded
+	 * dynamically and try again.
+	 */
+	ldops = get_ldops(disc);
+	if (IS_ERR(ldops)) {
 		request_module("tty-ldisc-%d", disc);
-		ld = tty_ldisc_try_get(disc);
+		ldops = get_ldops(disc);
+		if (IS_ERR(ldops))
+			return ERR_CAST(ldops);
 	}
+
+	ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL);
+	if (ld == NULL) {
+		put_ldops(ldops);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	ld->ops = ldops;
+	atomic_set(&ld->users, 1);
 	return ld;
 }
 
@@ -234,13 +236,13 @@ static void tty_ldiscs_seq_stop(struct seq_file *m, void *v)
 static int tty_ldiscs_seq_show(struct seq_file *m, void *v)
 {
 	int i = *(loff_t *)v;
-	struct tty_ldisc *ld;
+	struct tty_ldisc_ops *ldops;
 
-	ld = tty_ldisc_try_get(i);
-	if (IS_ERR(ld))
+	ldops = get_ldops(i);
+	if (IS_ERR(ldops))
 		return 0;
-	seq_printf(m, "%-10s %2d\n", ld->ops->name ? ld->ops->name : "???", i);
-	put_ldisc(ld);
+	seq_printf(m, "%-10s %2d\n", ldops->name ? ldops->name : "???", i);
+	put_ldops(ldops);
 	return 0;
 }
 
@@ -516,7 +518,7 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old)
 static int tty_ldisc_halt(struct tty_struct *tty)
 {
 	clear_bit(TTY_LDISC, &tty->flags);
-	return cancel_delayed_work(&tty->buf.work);
+	return cancel_delayed_work_sync(&tty->buf.work);
 }
 
 /**
@@ -754,12 +756,9 @@ void tty_ldisc_hangup(struct tty_struct *tty)
 	 * N_TTY.
 	 */
 	if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) {
-		/* Make sure the old ldisc is quiescent */
-		tty_ldisc_halt(tty);
-		flush_scheduled_work();
-
 		/* Avoid racing set_ldisc or tty_ldisc_release */
 		mutex_lock(&tty->ldisc_mutex);
+		tty_ldisc_halt(tty);
 		if (tty->ldisc) {	/* Not yet closed */
 			/* Switch back to N_TTY */
 			tty_ldisc_reinit(tty);
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 9769b1149f7..2e8552dc5ed 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -23,6 +23,7 @@ void tty_port_init(struct tty_port *port)
 	memset(port, 0, sizeof(*port));
 	init_waitqueue_head(&port->open_wait);
 	init_waitqueue_head(&port->close_wait);
+	init_waitqueue_head(&port->delta_msr_wait);
 	mutex_init(&port->mutex);
 	spin_lock_init(&port->lock);
 	port->close_delay = (50 * HZ) / 100;
@@ -96,6 +97,14 @@ void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)
 }
 EXPORT_SYMBOL(tty_port_tty_set);
 
+static void tty_port_shutdown(struct tty_port *port)
+{
+	if (port->ops->shutdown &&
+		test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags))
+			port->ops->shutdown(port);
+
+}
+
 /**
  *	tty_port_hangup		-	hangup helper
  *	@port: tty port
@@ -116,6 +125,8 @@ void tty_port_hangup(struct tty_port *port)
 	port->tty = NULL;
 	spin_unlock_irqrestore(&port->lock, flags);
 	wake_up_interruptible(&port->open_wait);
+	wake_up_interruptible(&port->delta_msr_wait);
+	tty_port_shutdown(port);
 }
 EXPORT_SYMBOL(tty_port_hangup);
 
@@ -210,6 +221,9 @@ int tty_port_block_til_ready(struct tty_port *port,
 	   the port has just hung up or is in another error state */
 	if ((filp->f_flags & O_NONBLOCK) ||
 			(tty->flags & (1 << TTY_IO_ERROR))) {
+		/* Indicate we are open */
+		if (tty->termios->c_cflag & CBAUD)
+			tty_port_raise_dtr_rts(port);
 		port->flags |= ASYNC_NORMAL_ACTIVE;
 		return 0;
 	}
@@ -296,15 +310,17 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f
 
 	if (port->count) {
 		spin_unlock_irqrestore(&port->lock, flags);
+		if (port->ops->drop)
+			port->ops->drop(port);
 		return 0;
 	}
-	port->flags |= ASYNC_CLOSING;
+	set_bit(ASYNCB_CLOSING, &port->flags);
 	tty->closing = 1;
 	spin_unlock_irqrestore(&port->lock, flags);
 	/* Don't block on a stalled port, just pull the chain */
 	if (tty->flow_stopped)
 		tty_driver_flush_buffer(tty);
-	if (port->flags & ASYNC_INITIALIZED &&
+	if (test_bit(ASYNCB_INITIALIZED, &port->flags) &&
 			port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
 		tty_wait_until_sent(tty, port->closing_wait);
 	if (port->drain_delay) {
@@ -318,6 +334,9 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f
 			timeout = 2 * HZ;
 		schedule_timeout_interruptible(timeout);
 	}
+	/* Don't call port->drop for the last reference. Callers will want
+	   to drop the last active reference in ->shutdown() or the tty
+	   shutdown path */
 	return 1;
 }
 EXPORT_SYMBOL(tty_port_close_start);
@@ -348,3 +367,14 @@ void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
 	spin_unlock_irqrestore(&port->lock, flags);
 }
 EXPORT_SYMBOL(tty_port_close_end);
+
+void tty_port_close(struct tty_port *port, struct tty_struct *tty,
+							struct file *filp)
+{
+	if (tty_port_close_start(port, tty, filp) == 0)
+		return;
+	tty_port_shutdown(port);
+	tty_port_close_end(port, tty);
+	tty_port_tty_set(port, NULL);
+}
+EXPORT_SYMBOL(tty_port_close);
diff --git a/drivers/char/uv_mmtimer.c b/drivers/char/uv_mmtimer.c
new file mode 100644
index 00000000000..867b67be9f0
--- /dev/null
+++ b/drivers/char/uv_mmtimer.c
@@ -0,0 +1,216 @@
+/*
+ * Timer device implementation for SGI UV platform.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2009 Silicon Graphics, Inc.  All rights reserved.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/ioctl.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/mmtimer.h>
+#include <linux/miscdevice.h>
+#include <linux/posix-timers.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/math64.h>
+#include <linux/smp_lock.h>
+
+#include <asm/genapic.h>
+#include <asm/uv/uv_hub.h>
+#include <asm/uv/bios.h>
+#include <asm/uv/uv.h>
+
+MODULE_AUTHOR("Dimitri Sivanich <sivanich@sgi.com>");
+MODULE_DESCRIPTION("SGI UV Memory Mapped RTC Timer");
+MODULE_LICENSE("GPL");
+
+/* name of the device, usually in /dev */
+#define UV_MMTIMER_NAME "mmtimer"
+#define UV_MMTIMER_DESC "SGI UV Memory Mapped RTC Timer"
+#define UV_MMTIMER_VERSION "1.0"
+
+static long uv_mmtimer_ioctl(struct file *file, unsigned int cmd,
+						unsigned long arg);
+static int uv_mmtimer_mmap(struct file *file, struct vm_area_struct *vma);
+
+/*
+ * Period in femtoseconds (10^-15 s)
+ */
+static unsigned long uv_mmtimer_femtoperiod;
+
+static const struct file_operations uv_mmtimer_fops = {
+	.owner = THIS_MODULE,
+	.mmap =	uv_mmtimer_mmap,
+	.unlocked_ioctl = uv_mmtimer_ioctl,
+};
+
+/**
+ * uv_mmtimer_ioctl - ioctl interface for /dev/uv_mmtimer
+ * @file: file structure for the device
+ * @cmd: command to execute
+ * @arg: optional argument to command
+ *
+ * Executes the command specified by @cmd.  Returns 0 for success, < 0 for
+ * failure.
+ *
+ * Valid commands:
+ *
+ * %MMTIMER_GETOFFSET - Should return the offset (relative to the start
+ * of the page where the registers are mapped) for the counter in question.
+ *
+ * %MMTIMER_GETRES - Returns the resolution of the clock in femto (10^-15)
+ * seconds
+ *
+ * %MMTIMER_GETFREQ - Copies the frequency of the clock in Hz to the address
+ * specified by @arg
+ *
+ * %MMTIMER_GETBITS - Returns the number of bits in the clock's counter
+ *
+ * %MMTIMER_MMAPAVAIL - Returns 1 if registers can be mmap'd into userspace
+ *
+ * %MMTIMER_GETCOUNTER - Gets the current value in the counter and places it
+ * in the address specified by @arg.
+ */
+static long uv_mmtimer_ioctl(struct file *file, unsigned int cmd,
+						unsigned long arg)
+{
+	int ret = 0;
+
+	switch (cmd) {
+	case MMTIMER_GETOFFSET:	/* offset of the counter */
+		/*
+		 * UV RTC register is on its own page
+		 */
+		if (PAGE_SIZE <= (1 << 16))
+			ret = ((UV_LOCAL_MMR_BASE | UVH_RTC) & (PAGE_SIZE-1))
+				/ 8;
+		else
+			ret = -ENOSYS;
+		break;
+
+	case MMTIMER_GETRES: /* resolution of the clock in 10^-15 s */
+		if (copy_to_user((unsigned long __user *)arg,
+				&uv_mmtimer_femtoperiod, sizeof(unsigned long)))
+			ret = -EFAULT;
+		break;
+
+	case MMTIMER_GETFREQ: /* frequency in Hz */
+		if (copy_to_user((unsigned long __user *)arg,
+				&sn_rtc_cycles_per_second,
+				sizeof(unsigned long)))
+			ret = -EFAULT;
+		break;
+
+	case MMTIMER_GETBITS: /* number of bits in the clock */
+		ret = hweight64(UVH_RTC_REAL_TIME_CLOCK_MASK);
+		break;
+
+	case MMTIMER_MMAPAVAIL: /* can we mmap the clock into userspace? */
+		ret = (PAGE_SIZE <= (1 << 16)) ? 1 : 0;
+		break;
+
+	case MMTIMER_GETCOUNTER:
+		if (copy_to_user((unsigned long __user *)arg,
+				(unsigned long *)uv_local_mmr_address(UVH_RTC),
+				sizeof(unsigned long)))
+			ret = -EFAULT;
+		break;
+	default:
+		ret = -ENOTTY;
+		break;
+	}
+	return ret;
+}
+
+/**
+ * uv_mmtimer_mmap - maps the clock's registers into userspace
+ * @file: file structure for the device
+ * @vma: VMA to map the registers into
+ *
+ * Calls remap_pfn_range() to map the clock's registers into
+ * the calling process' address space.
+ */
+static int uv_mmtimer_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	unsigned long uv_mmtimer_addr;
+
+	if (vma->vm_end - vma->vm_start != PAGE_SIZE)
+		return -EINVAL;
+
+	if (vma->vm_flags & VM_WRITE)
+		return -EPERM;
+
+	if (PAGE_SIZE > (1 << 16))
+		return -ENOSYS;
+
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	uv_mmtimer_addr = UV_LOCAL_MMR_BASE | UVH_RTC;
+	uv_mmtimer_addr &= ~(PAGE_SIZE - 1);
+	uv_mmtimer_addr &= 0xfffffffffffffffUL;
+
+	if (remap_pfn_range(vma, vma->vm_start, uv_mmtimer_addr >> PAGE_SHIFT,
+					PAGE_SIZE, vma->vm_page_prot)) {
+		printk(KERN_ERR "remap_pfn_range failed in uv_mmtimer_mmap\n");
+		return -EAGAIN;
+	}
+
+	return 0;
+}
+
+static struct miscdevice uv_mmtimer_miscdev = {
+	MISC_DYNAMIC_MINOR,
+	UV_MMTIMER_NAME,
+	&uv_mmtimer_fops
+};
+
+
+/**
+ * uv_mmtimer_init - device initialization routine
+ *
+ * Does initial setup for the uv_mmtimer device.
+ */
+static int __init uv_mmtimer_init(void)
+{
+	if (!is_uv_system()) {
+		printk(KERN_ERR "%s: Hardware unsupported\n", UV_MMTIMER_NAME);
+		return -1;
+	}
+
+	/*
+	 * Sanity check the cycles/sec variable
+	 */
+	if (sn_rtc_cycles_per_second < 100000) {
+		printk(KERN_ERR "%s: unable to determine clock frequency\n",
+		       UV_MMTIMER_NAME);
+		return -1;
+	}
+
+	uv_mmtimer_femtoperiod = ((unsigned long)1E15 +
+				sn_rtc_cycles_per_second / 2) /
+				sn_rtc_cycles_per_second;
+
+	if (misc_register(&uv_mmtimer_miscdev)) {
+		printk(KERN_ERR "%s: failed to register device\n",
+		       UV_MMTIMER_NAME);
+		return -1;
+	}
+
+	printk(KERN_INFO "%s: v%s, %ld MHz\n", UV_MMTIMER_DESC,
+		UV_MMTIMER_VERSION,
+		sn_rtc_cycles_per_second/(unsigned long)1E6);
+
+	return 0;
+}
+
+module_init(uv_mmtimer_init);
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index c74dacfa679..a035ae39a35 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -65,7 +65,7 @@ static int put_chars(u32 vtermno, const char *buf, int count)
 
 	/* add_buf wants a token to identify this buffer: we hand it any
 	 * non-NULL pointer, since there's only ever one buffer. */
-	if (out_vq->vq_ops->add_buf(out_vq, sg, 1, 0, (void *)1) == 0) {
+	if (out_vq->vq_ops->add_buf(out_vq, sg, 1, 0, (void *)1) >= 0) {
 		/* Tell Host to go! */
 		out_vq->vq_ops->kick(out_vq);
 		/* Chill out until it's done with the buffer. */
@@ -85,7 +85,7 @@ static void add_inbuf(void)
 	sg_init_one(sg, inbuf, PAGE_SIZE);
 
 	/* We should always be able to add one buffer to an empty queue. */
-	if (in_vq->vq_ops->add_buf(in_vq, sg, 0, 1, inbuf) != 0)
+	if (in_vq->vq_ops->add_buf(in_vq, sg, 0, 1, inbuf) < 0)
 		BUG();
 	in_vq->vq_ops->kick(in_vq);
 }
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 6aa88f50b03..0c80c68cd04 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -252,7 +252,6 @@ static void notify_update(struct vc_data *vc)
 	struct vt_notifier_param param = { .vc = vc };
 	atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, &param);
 }
-
 /*
  *	Low-Level Functions
  */
@@ -935,6 +934,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
 
 	if (CON_IS_VISIBLE(vc))
 		update_screen(vc);
+	vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
 	return err;
 }
 
@@ -2129,11 +2129,7 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
 	currcons = vc->vc_num;
 	if (!vc_cons_allocated(currcons)) {
 	    /* could this happen? */
-	    static int error = 0;
-	    if (!error) {
-		error = 1;
-		printk("con_write: tty %d not allocated\n", currcons+1);
-	    }
+		printk_once("con_write: tty %d not allocated\n", currcons+1);
 	    release_console_sem();
 	    return 0;
 	}
@@ -2910,6 +2906,9 @@ static const struct tty_operations con_ops = {
 	.flush_chars = con_flush_chars,
 	.chars_in_buffer = con_chars_in_buffer,
 	.ioctl = vt_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = vt_compat_ioctl,
+#endif
 	.stop = con_stop,
 	.start = con_start,
 	.throttle = con_throttle,
@@ -2955,7 +2954,6 @@ int __init vty_init(const struct file_operations *console_fops)
 }
 
 #ifndef VT_SINGLE_DRIVER
-#include <linux/device.h>
 
 static struct class *vtconsole_class;
 
@@ -3638,6 +3636,7 @@ void do_blank_screen(int entering_gfx)
 		blank_state = blank_vesa_wait;
 		mod_timer(&console_timer, jiffies + vesa_off_interval);
 	}
+	vt_event_post(VT_EVENT_BLANK, vc->vc_num, vc->vc_num);
 }
 EXPORT_SYMBOL(do_blank_screen);
 
@@ -3682,6 +3681,7 @@ void do_unblank_screen(int leaving_gfx)
 		console_blank_hook(0);
 	set_palette(vc);
 	set_cursor(vc);
+	vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num);
 }
 EXPORT_SYMBOL(do_unblank_screen);
 
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 95189f288f8..6aa10284104 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -16,6 +16,8 @@
 #include <linux/tty.h>
 #include <linux/timer.h>
 #include <linux/kernel.h>
+#include <linux/compat.h>
+#include <linux/module.h>
 #include <linux/kd.h>
 #include <linux/vt.h>
 #include <linux/string.h>
@@ -62,6 +64,133 @@ extern struct tty_driver *console_driver;
 static void complete_change_console(struct vc_data *vc);
 
 /*
+ *	User space VT_EVENT handlers
+ */
+
+struct vt_event_wait {
+	struct list_head list;
+	struct vt_event event;
+	int done;
+};
+
+static LIST_HEAD(vt_events);
+static DEFINE_SPINLOCK(vt_event_lock);
+static DECLARE_WAIT_QUEUE_HEAD(vt_event_waitqueue);
+
+/**
+ *	vt_event_post
+ *	@event: the event that occurred
+ *	@old: old console
+ *	@new: new console
+ *
+ *	Post an VT event to interested VT handlers
+ */
+
+void vt_event_post(unsigned int event, unsigned int old, unsigned int new)
+{
+	struct list_head *pos, *head;
+	unsigned long flags;
+	int wake = 0;
+
+	spin_lock_irqsave(&vt_event_lock, flags);
+	head = &vt_events;
+
+	list_for_each(pos, head) {
+		struct vt_event_wait *ve = list_entry(pos,
+						struct vt_event_wait, list);
+		if (!(ve->event.event & event))
+			continue;
+		ve->event.event = event;
+		/* kernel view is consoles 0..n-1, user space view is
+		   console 1..n with 0 meaning current, so we must bias */
+		ve->event.oldev = old + 1;
+		ve->event.newev = new + 1;
+		wake = 1;
+		ve->done = 1;
+	}
+	spin_unlock_irqrestore(&vt_event_lock, flags);
+	if (wake)
+		wake_up_interruptible(&vt_event_waitqueue);
+}
+
+/**
+ *	vt_event_wait		-	wait for an event
+ *	@vw: our event
+ *
+ *	Waits for an event to occur which completes our vt_event_wait
+ *	structure. On return the structure has wv->done set to 1 for success
+ *	or 0 if some event such as a signal ended the wait.
+ */
+
+static void vt_event_wait(struct vt_event_wait *vw)
+{
+	unsigned long flags;
+	/* Prepare the event */
+	INIT_LIST_HEAD(&vw->list);
+	vw->done = 0;
+	/* Queue our event */
+	spin_lock_irqsave(&vt_event_lock, flags);
+	list_add(&vw->list, &vt_events);
+	spin_unlock_irqrestore(&vt_event_lock, flags);
+	/* Wait for it to pass */
+	wait_event_interruptible(vt_event_waitqueue, vw->done);
+	/* Dequeue it */
+	spin_lock_irqsave(&vt_event_lock, flags);
+	list_del(&vw->list);
+	spin_unlock_irqrestore(&vt_event_lock, flags);
+}
+
+/**
+ *	vt_event_wait_ioctl	-	event ioctl handler
+ *	@arg: argument to ioctl
+ *
+ *	Implement the VT_WAITEVENT ioctl using the VT event interface
+ */
+
+static int vt_event_wait_ioctl(struct vt_event __user *event)
+{
+	struct vt_event_wait vw;
+
+	if (copy_from_user(&vw.event, event, sizeof(struct vt_event)))
+		return -EFAULT;
+	/* Highest supported event for now */
+	if (vw.event.event & ~VT_MAX_EVENT)
+		return -EINVAL;
+
+	vt_event_wait(&vw);
+	/* If it occurred report it */
+	if (vw.done) {
+		if (copy_to_user(event, &vw.event, sizeof(struct vt_event)))
+			return -EFAULT;
+		return 0;
+	}
+	return -EINTR;
+}
+
+/**
+ *	vt_waitactive	-	active console wait
+ *	@event: event code
+ *	@n: new console
+ *
+ *	Helper for event waits. Used to implement the legacy
+ *	event waiting ioctls in terms of events
+ */
+
+int vt_waitactive(int n)
+{
+	struct vt_event_wait vw;
+	do {
+		if (n == fg_console + 1)
+			break;
+		vw.event.event = VT_EVENT_SWITCH;
+		vt_event_wait(&vw);
+		if (vw.done == 0)
+			return -EINTR;
+	} while (vw.event.newev != n);
+	return 0;
+}
+
+/*
  * these are the valid i/o ports we're allowed to change. they map all the
  * video ports
  */
@@ -360,6 +489,8 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_
 	return 0;
 }
 
+
+
 /*
  * We handle the console-specific ioctl's here.  We allow the
  * capability to modify any console, not just the fg_console. 
@@ -842,6 +973,43 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
 		}
 		break;
 
+	case VT_SETACTIVATE:
+	{
+		struct vt_setactivate vsa;
+
+		if (!perm)
+			goto eperm;
+
+		if (copy_from_user(&vsa, (struct vt_setactivate __user *)arg,
+					sizeof(struct vt_setactivate))) {
+			ret = -EFAULT;
+			goto out;
+		}
+		if (vsa.console == 0 || vsa.console > MAX_NR_CONSOLES)
+			ret = -ENXIO;
+		else {
+			vsa.console--;
+			acquire_console_sem();
+			ret = vc_allocate(vsa.console);
+			if (ret == 0) {
+				struct vc_data *nvc;
+				/* This is safe providing we don't drop the
+				   console sem between vc_allocate and
+				   finishing referencing nvc */
+				nvc = vc_cons[vsa.console].d;
+				nvc->vt_mode = vsa.mode;
+				nvc->vt_mode.frsig = 0;
+				put_pid(nvc->vt_pid);
+				nvc->vt_pid = get_pid(task_pid(current));
+			}
+			release_console_sem();
+			if (ret)
+				break;
+			/* Commence switch and lock */
+			set_console(arg);
+		}
+	}
+
 	/*
 	 * wait until the specified VT has been activated
 	 */
@@ -851,7 +1019,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
 		if (arg == 0 || arg > MAX_NR_CONSOLES)
 			ret = -ENXIO;
 		else
-			ret = vt_waitactive(arg - 1);
+			ret = vt_waitactive(arg);
 		break;
 
 	/*
@@ -1159,6 +1327,9 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
 		ret = put_user(vc->vc_hi_font_mask,
 					(unsigned short __user *)arg);
 		break;
+	case VT_WAITEVENT:
+		ret = vt_event_wait_ioctl((struct vt_event __user *)arg);
+		break;
 	default:
 		ret = -ENOIOCTLCMD;
 	}
@@ -1170,54 +1341,6 @@ eperm:
 	goto out;
 }
 
-/*
- * Sometimes we want to wait until a particular VT has been activated. We
- * do it in a very simple manner. Everybody waits on a single queue and
- * get woken up at once. Those that are satisfied go on with their business,
- * while those not ready go back to sleep. Seems overkill to add a wait
- * to each vt just for this - usually this does nothing!
- */
-static DECLARE_WAIT_QUEUE_HEAD(vt_activate_queue);
-
-/*
- * Sleeps until a vt is activated, or the task is interrupted. Returns
- * 0 if activation, -EINTR if interrupted by a signal handler.
- */
-int vt_waitactive(int vt)
-{
-	int retval;
-	DECLARE_WAITQUEUE(wait, current);
-
-	add_wait_queue(&vt_activate_queue, &wait);
-	for (;;) {
-		retval = 0;
-
-		/*
-		 * Synchronize with redraw_screen(). By acquiring the console
-		 * semaphore we make sure that the console switch is completed
-		 * before we return. If we didn't wait for the semaphore, we
-		 * could return at a point where fg_console has already been
-		 * updated, but the console switch hasn't been completed.
-		 */
-		acquire_console_sem();
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (vt == fg_console) {
-			release_console_sem();
-			break;
-		}
-		release_console_sem();
-		retval = -ERESTARTNOHAND;
-		if (signal_pending(current))
-			break;
-		schedule();
-	}
-	remove_wait_queue(&vt_activate_queue, &wait);
-	__set_current_state(TASK_RUNNING);
-	return retval;
-}
-
-#define vt_wake_waitactive() wake_up(&vt_activate_queue)
-
 void reset_vc(struct vc_data *vc)
 {
 	vc->vc_mode = KD_TEXT;
@@ -1256,12 +1379,216 @@ void vc_SAK(struct work_struct *work)
 	release_console_sem();
 }
 
+#ifdef CONFIG_COMPAT
+
+struct compat_consolefontdesc {
+	unsigned short charcount;       /* characters in font (256 or 512) */
+	unsigned short charheight;      /* scan lines per character (1-32) */
+	compat_caddr_t chardata;	/* font data in expanded form */
+};
+
+static inline int
+compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd,
+			 int perm, struct console_font_op *op)
+{
+	struct compat_consolefontdesc cfdarg;
+	int i;
+
+	if (copy_from_user(&cfdarg, user_cfd, sizeof(struct compat_consolefontdesc)))
+		return -EFAULT;
+
+	switch (cmd) {
+	case PIO_FONTX:
+		if (!perm)
+			return -EPERM;
+		op->op = KD_FONT_OP_SET;
+		op->flags = KD_FONT_FLAG_OLD;
+		op->width = 8;
+		op->height = cfdarg.charheight;
+		op->charcount = cfdarg.charcount;
+		op->data = compat_ptr(cfdarg.chardata);
+		return con_font_op(vc_cons[fg_console].d, op);
+	case GIO_FONTX:
+		op->op = KD_FONT_OP_GET;
+		op->flags = KD_FONT_FLAG_OLD;
+		op->width = 8;
+		op->height = cfdarg.charheight;
+		op->charcount = cfdarg.charcount;
+		op->data = compat_ptr(cfdarg.chardata);
+		i = con_font_op(vc_cons[fg_console].d, op);
+		if (i)
+			return i;
+		cfdarg.charheight = op->height;
+		cfdarg.charcount = op->charcount;
+		if (copy_to_user(user_cfd, &cfdarg, sizeof(struct compat_consolefontdesc)))
+			return -EFAULT;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+struct compat_console_font_op {
+	compat_uint_t op;        /* operation code KD_FONT_OP_* */
+	compat_uint_t flags;     /* KD_FONT_FLAG_* */
+	compat_uint_t width, height;     /* font size */
+	compat_uint_t charcount;
+	compat_caddr_t data;    /* font data with height fixed to 32 */
+};
+
+static inline int
+compat_kdfontop_ioctl(struct compat_console_font_op __user *fontop,
+			 int perm, struct console_font_op *op, struct vc_data *vc)
+{
+	int i;
+
+	if (copy_from_user(op, fontop, sizeof(struct compat_console_font_op)))
+		return -EFAULT;
+	if (!perm && op->op != KD_FONT_OP_GET)
+		return -EPERM;
+	op->data = compat_ptr(((struct compat_console_font_op *)op)->data);
+	op->flags |= KD_FONT_FLAG_OLD;
+	i = con_font_op(vc, op);
+	if (i)
+		return i;
+	((struct compat_console_font_op *)op)->data = (unsigned long)op->data;
+	if (copy_to_user(fontop, op, sizeof(struct compat_console_font_op)))
+		return -EFAULT;
+	return 0;
+}
+
+struct compat_unimapdesc {
+	unsigned short entry_ct;
+	compat_caddr_t entries;
+};
+
+static inline int
+compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud,
+			 int perm, struct vc_data *vc)
+{
+	struct compat_unimapdesc tmp;
+	struct unipair __user *tmp_entries;
+
+	if (copy_from_user(&tmp, user_ud, sizeof tmp))
+		return -EFAULT;
+	tmp_entries = compat_ptr(tmp.entries);
+	if (tmp_entries)
+		if (!access_ok(VERIFY_WRITE, tmp_entries,
+				tmp.entry_ct*sizeof(struct unipair)))
+			return -EFAULT;
+	switch (cmd) {
+	case PIO_UNIMAP:
+		if (!perm)
+			return -EPERM;
+		return con_set_unimap(vc, tmp.entry_ct, tmp_entries);
+	case GIO_UNIMAP:
+		if (!perm && fg_console != vc->vc_num)
+			return -EPERM;
+		return con_get_unimap(vc, tmp.entry_ct, &(user_ud->entry_ct), tmp_entries);
+	}
+	return 0;
+}
+
+long vt_compat_ioctl(struct tty_struct *tty, struct file * file,
+	     unsigned int cmd, unsigned long arg)
+{
+	struct vc_data *vc = tty->driver_data;
+	struct console_font_op op;	/* used in multiple places here */
+	struct kbd_struct *kbd;
+	unsigned int console;
+	void __user *up = (void __user *)arg;
+	int perm;
+	int ret = 0;
+
+	console = vc->vc_num;
+
+	lock_kernel();
+
+	if (!vc_cons_allocated(console)) { 	/* impossible? */
+		ret = -ENOIOCTLCMD;
+		goto out;
+	}
+
+	/*
+	 * To have permissions to do most of the vt ioctls, we either have
+	 * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG.
+	 */
+	perm = 0;
+	if (current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG))
+		perm = 1;
+
+	kbd = kbd_table + console;
+	switch (cmd) {
+	/*
+	 * these need special handlers for incompatible data structures
+	 */
+	case PIO_FONTX:
+	case GIO_FONTX:
+		ret = compat_fontx_ioctl(cmd, up, perm, &op);
+		break;
+
+	case KDFONTOP:
+		ret = compat_kdfontop_ioctl(up, perm, &op, vc);
+		break;
+
+	case PIO_UNIMAP:
+	case GIO_UNIMAP:
+		ret = compat_unimap_ioctl(cmd, up, perm, vc);
+		break;
+
+	/*
+	 * all these treat 'arg' as an integer
+	 */
+	case KIOCSOUND:
+	case KDMKTONE:
+#ifdef CONFIG_X86
+	case KDADDIO:
+	case KDDELIO:
+#endif
+	case KDSETMODE:
+	case KDMAPDISP:
+	case KDUNMAPDISP:
+	case KDSKBMODE:
+	case KDSKBMETA:
+	case KDSKBLED:
+	case KDSETLED:
+	case KDSIGACCEPT:
+	case VT_ACTIVATE:
+	case VT_WAITACTIVE:
+	case VT_RELDISP:
+	case VT_DISALLOCATE:
+	case VT_RESIZE:
+	case VT_RESIZEX:
+		goto fallback;
+
+	/*
+	 * the rest has a compatible data structure behind arg,
+	 * but we have to convert it to a proper 64 bit pointer.
+	 */
+	default:
+		arg = (unsigned long)compat_ptr(arg);
+		goto fallback;
+	}
+out:
+	unlock_kernel();
+	return ret;
+
+fallback:
+	unlock_kernel();
+	return vt_ioctl(tty, file, cmd, arg);
+}
+
+
+#endif /* CONFIG_COMPAT */
+
+
 /*
- * Performs the back end of a vt switch
+ * Performs the back end of a vt switch. Called under the console
+ * semaphore.
  */
 static void complete_change_console(struct vc_data *vc)
 {
 	unsigned char old_vc_mode;
+	int old = fg_console;
 
 	last_console = fg_console;
 
@@ -1325,7 +1652,7 @@ static void complete_change_console(struct vc_data *vc)
 	/*
 	 * Wake anyone waiting for their VT to activate
 	 */
-	vt_wake_waitactive();
+	vt_event_post(VT_EVENT_SWITCH, old, vc->vc_num);
 	return;
 }
 
@@ -1398,3 +1725,58 @@ void change_console(struct vc_data *new_vc)
 
 	complete_change_console(new_vc);
 }
+
+/* Perform a kernel triggered VT switch for suspend/resume */
+
+static int disable_vt_switch;
+
+int vt_move_to_console(unsigned int vt, int alloc)
+{
+	int prev;
+
+	acquire_console_sem();
+	/* Graphics mode - up to X */
+	if (disable_vt_switch) {
+		release_console_sem();
+		return 0;
+	}
+	prev = fg_console;
+
+	if (alloc && vc_allocate(vt)) {
+		/* we can't have a free VC for now. Too bad,
+		 * we don't want to mess the screen for now. */
+		release_console_sem();
+		return -ENOSPC;
+	}
+
+	if (set_console(vt)) {
+		/*
+		 * We're unable to switch to the SUSPEND_CONSOLE.
+		 * Let the calling function know so it can decide
+		 * what to do.
+		 */
+		release_console_sem();
+		return -EIO;
+	}
+	release_console_sem();
+	if (vt_waitactive(vt + 1)) {
+		pr_debug("Suspend: Can't switch VCs.");
+		return -EINTR;
+	}
+	return prev;
+}
+
+/*
+ * Normally during a suspend, we allocate a new console and switch to it.
+ * When we resume, we switch back to the original console.  This switch
+ * can be slow, so on systems where the framebuffer can handle restoration
+ * of video registers anyways, there's little point in doing the console
+ * switch.  This function allows you to disable it by passing it '0'.
+ */
+void pm_set_vt_switch(int do_switch)
+{
+	acquire_console_sem();
+	disable_vt_switch = !do_switch;
+	release_console_sem();
+}
+EXPORT_SYMBOL(pm_set_vt_switch);
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
index f40ab699860..4846d50199f 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
@@ -559,7 +559,7 @@ static int hwicap_release(struct inode *inode, struct file *file)
 	return status;
 }
 
-static struct file_operations hwicap_fops = {
+static const struct file_operations hwicap_fops = {
 	.owner = THIS_MODULE,
 	.write = hwicap_write,
 	.read = hwicap_read,