Merge /spare/repo/linux-2.6/

11 files changed, 288 insertions, 37 deletions

diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index 14e8cce9f86..6377a96735d 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_SCLP_CPI) += sclp_cpi.o
 
 obj-$(CONFIG_ZVM_WATCHDOG) += vmwatchdog.o
 obj-$(CONFIG_VMLOGRDR) += vmlogrdr.o
+obj-$(CONFIG_VMCP) += vmcp.o
 
 tape-$(CONFIG_S390_TAPE_BLOCK) += tape_block.o
 tape-$(CONFIG_PROC_FS) += tape_proc.o
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 022f17bff73..f11a67fda40 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -860,8 +860,8 @@ con3215_init(void)
 
 	/* Set the console mode for VM */
 	if (MACHINE_IS_VM) {
-		cpcmd("TERM CONMODE 3215", NULL, 0);
-		cpcmd("TERM AUTOCR OFF", NULL, 0);
+		cpcmd("TERM CONMODE 3215", NULL, 0, NULL);
+		cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
 	}
 
 	/* allocate 3215 request structures */
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index d52fb57a6b1..fc7a213e591 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -591,8 +591,8 @@ con3270_init(void)
 
 	/* Set the console mode for VM */
 	if (MACHINE_IS_VM) {
-		cpcmd("TERM CONMODE 3270", 0, 0);
-		cpcmd("TERM AUTOCR OFF", 0, 0);
+		cpcmd("TERM CONMODE 3270", NULL, 0, NULL);
+		cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
 	}
 
 	cdev = ccw_device_probe_console();
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 8e16a971668..d5eefeaba50 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -1084,7 +1084,7 @@ raw3270_probe (struct ccw_device *cdev)
  * Additional attributes for a 3270 device
  */
 static ssize_t
-raw3270_model_show(struct device *dev, char *buf)
+raw3270_model_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "%i\n",
 			((struct raw3270 *) dev->driver_data)->model);
@@ -1092,7 +1092,7 @@ raw3270_model_show(struct device *dev, char *buf)
 static DEVICE_ATTR(model, 0444, raw3270_model_show, 0);
 
 static ssize_t
-raw3270_rows_show(struct device *dev, char *buf)
+raw3270_rows_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "%i\n",
 			((struct raw3270 *) dev->driver_data)->rows);
@@ -1100,7 +1100,7 @@ raw3270_rows_show(struct device *dev, char *buf)
 static DEVICE_ATTR(rows, 0444, raw3270_rows_show, 0);
 
 static ssize_t
-raw3270_columns_show(struct device *dev, char *buf)
+raw3270_columns_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "%i\n",
 			((struct raw3270 *) dev->driver_data)->cols);
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index 480ec87976f..20be88e91fa 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -1351,13 +1351,13 @@ tape_34xx_init (void)
 {
 	int rc;
 
-	TAPE_DBF_AREA = debug_register ( "tape_34xx", 1, 2, 4*sizeof(long));
+	TAPE_DBF_AREA = debug_register ( "tape_34xx", 2, 2, 4*sizeof(long));
 	debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view);
 #ifdef DBF_LIKE_HELL
 	debug_set_level(TAPE_DBF_AREA, 6);
 #endif
 
-	DBF_EVENT(3, "34xx init: $Revision: 1.21 $\n");
+	DBF_EVENT(3, "34xx init: $Revision: 1.23 $\n");
 	/* Register driver for 3480/3490 tapes. */
 	rc = ccw_driver_register(&tape_34xx_driver);
 	if (rc)
@@ -1378,7 +1378,7 @@ tape_34xx_exit(void)
 MODULE_DEVICE_TABLE(ccw, tape_34xx_ids);
 MODULE_AUTHOR("(C) 2001-2002 IBM Deutschland Entwicklung GmbH");
 MODULE_DESCRIPTION("Linux on zSeries channel attached 3480 tape "
-		   "device driver ($Revision: 1.21 $)");
+		   "device driver ($Revision: 1.23 $)");
 MODULE_LICENSE("GPL");
 
 module_init(tape_34xx_init);
diff --git a/drivers/s390/char/tape_class.c b/drivers/s390/char/tape_class.c
index 0f8ffd4167c..ed0cb1f15b4 100644
--- a/drivers/s390/char/tape_class.c
+++ b/drivers/s390/char/tape_class.c
@@ -16,7 +16,7 @@ MODULE_DESCRIPTION(
 );
 MODULE_LICENSE("GPL");
 
-struct class_simple *tape_class;
+static struct class *tape_class;
 
 /*
  * Register a tape device and return a pointer to the cdev structure.
@@ -70,7 +70,7 @@ struct tape_class_device *register_tape_dev(
 	if (rc)
 		goto fail_with_cdev;
 
-	tcd->class_device = class_simple_device_add(
+	tcd->class_device = class_device_create(
 				tape_class,
 				tcd->char_device->dev,
 				device,
@@ -101,7 +101,7 @@ void unregister_tape_dev(struct tape_class_device *tcd)
 			&tcd->class_device->dev->kobj,
 			tcd->mode_name
 		);
-		class_simple_device_remove(tcd->char_device->dev);
+		class_device_destroy(tape_class, tcd->char_device->dev);
 		cdev_del(tcd->char_device);
 		kfree(tcd);
 	}
@@ -111,14 +111,14 @@ EXPORT_SYMBOL(unregister_tape_dev);
 
 static int __init tape_init(void)
 {
-	tape_class = class_simple_create(THIS_MODULE, "tape390");
+	tape_class = class_create(THIS_MODULE, "tape390");
 
 	return 0;
 }
 
 static void __exit tape_exit(void)
 {
-	class_simple_destroy(tape_class);
+	class_destroy(tape_class);
 	tape_class = NULL;
 }
 
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index e51046ab8ad..0597aa0e27e 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -107,7 +107,7 @@ busid_to_int(char *bus_id)
  *        replaced by a link to the cdev tree.
  */
 static ssize_t
-tape_medium_state_show(struct device *dev, char *buf)
+tape_medium_state_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct tape_device *tdev;
 
@@ -119,7 +119,7 @@ static
 DEVICE_ATTR(medium_state, 0444, tape_medium_state_show, NULL);
 
 static ssize_t
-tape_first_minor_show(struct device *dev, char *buf)
+tape_first_minor_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct tape_device *tdev;
 
@@ -131,7 +131,7 @@ static
 DEVICE_ATTR(first_minor, 0444, tape_first_minor_show, NULL);
 
 static ssize_t
-tape_state_show(struct device *dev, char *buf)
+tape_state_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct tape_device *tdev;
 
@@ -144,7 +144,7 @@ static
 DEVICE_ATTR(state, 0444, tape_state_show, NULL);
 
 static ssize_t
-tape_operation_show(struct device *dev, char *buf)
+tape_operation_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct tape_device *tdev;
 	ssize_t rc;
@@ -171,7 +171,7 @@ static
 DEVICE_ATTR(operation, 0444, tape_operation_show, NULL);
 
 static ssize_t
-tape_blocksize_show(struct device *dev, char *buf)
+tape_blocksize_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct tape_device *tdev;
 
@@ -1186,7 +1186,7 @@ tape_mtop(struct tape_device *device, int mt_op, int mt_count)
 static int
 tape_init (void)
 {
-	TAPE_DBF_AREA = debug_register ( "tape", 1, 2, 4*sizeof(long));
+	TAPE_DBF_AREA = debug_register ( "tape", 2, 2, 4*sizeof(long));
 	debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view);
 #ifdef DBF_LIKE_HELL
 	debug_set_level(TAPE_DBF_AREA, 6);
diff --git a/drivers/s390/char/tape_proc.c b/drivers/s390/char/tape_proc.c
index 801d17cca34..5fec0a10cc3 100644
--- a/drivers/s390/char/tape_proc.c
+++ b/drivers/s390/char/tape_proc.c
@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/vmalloc.h>
 #include <linux/seq_file.h>
+#include <linux/proc_fs.h>
 
 #define TAPE_DBF_AREA	tape_core_dbf
 
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
new file mode 100644
index 00000000000..7f11a608a63
--- /dev/null
+++ b/drivers/s390/char/vmcp.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2004,2005 IBM Corporation
+ * Interface implementation for communication with the v/VM control program
+ * Author(s): Christian Borntraeger <cborntra@de.ibm.com>
+ *
+ *
+ * z/VMs CP offers the possibility to issue commands via the diagnose code 8
+ * this driver implements a character device that issues these commands and
+ * returns the answer of CP.
+
+ * The idea of this driver is based on cpint from Neale Ferguson and #CP in CMS
+ */
+
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <asm/cpcmd.h>
+#include <asm/debug.h>
+#include <asm/uaccess.h>
+#include "vmcp.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Borntraeger <cborntra@de.ibm.com>");
+MODULE_DESCRIPTION("z/VM CP interface");
+
+static debug_info_t *vmcp_debug;
+
+static int vmcp_open(struct inode *inode, struct file *file)
+{
+	struct vmcp_session *session;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	session = kmalloc(sizeof(*session), GFP_KERNEL);
+	if (!session)
+		return -ENOMEM;
+	session->bufsize = PAGE_SIZE;
+	session->response = NULL;
+	session->resp_size = 0;
+	init_MUTEX(&session->mutex);
+	file->private_data = session;
+	return nonseekable_open(inode, file);
+}
+
+static int vmcp_release(struct inode *inode, struct file *file)
+{
+	struct vmcp_session *session;
+
+	session = (struct vmcp_session *)file->private_data;
+	file->private_data = NULL;
+	free_pages((unsigned long)session->response, get_order(session->bufsize));
+	kfree(session);
+	return 0;
+}
+
+static ssize_t
+vmcp_read(struct file *file, char __user * buff, size_t count, loff_t * ppos)
+{
+	size_t tocopy;
+	struct vmcp_session *session;
+
+	session = (struct vmcp_session *)file->private_data;
+	if (down_interruptible(&session->mutex))
+		return -ERESTARTSYS;
+	if (!session->response) {
+		up(&session->mutex);
+		return 0;
+	}
+	if (*ppos > session->resp_size) {
+		up(&session->mutex);
+		return 0;
+	}
+	tocopy = min(session->resp_size - (size_t) (*ppos), count);
+	tocopy = min(tocopy,session->bufsize - (size_t) (*ppos));
+
+	if (copy_to_user(buff, session->response + (*ppos), tocopy)) {
+		up(&session->mutex);
+		return -EFAULT;
+	}
+	up(&session->mutex);
+	*ppos += tocopy;
+	return tocopy;
+}
+
+static ssize_t
+vmcp_write(struct file *file, const char __user * buff, size_t count,
+	   loff_t * ppos)
+{
+	char *cmd;
+	struct vmcp_session *session;
+
+	if (count > 240)
+		return -EINVAL;
+	cmd = kmalloc(count + 1, GFP_KERNEL);
+	if (!cmd)
+		return -ENOMEM;
+	if (copy_from_user(cmd, buff, count)) {
+		kfree(cmd);
+		return -EFAULT;
+	}
+	cmd[count] = '\0';
+	session = (struct vmcp_session *)file->private_data;
+	if (down_interruptible(&session->mutex))
+		return -ERESTARTSYS;
+	if (!session->response)
+		session->response = (char *)__get_free_pages(GFP_KERNEL
+						| __GFP_REPEAT 	| GFP_DMA,
+						get_order(session->bufsize));
+	if (!session->response) {
+		up(&session->mutex);
+		kfree(cmd);
+		return -ENOMEM;
+	}
+	debug_text_event(vmcp_debug, 1, cmd);
+	session->resp_size = cpcmd(cmd, session->response,
+				   session->bufsize,
+				   &session->resp_code);
+	up(&session->mutex);
+	kfree(cmd);
+	*ppos = 0;		/* reset the file pointer after a command */
+	return count;
+}
+
+
+/*
+ * These ioctls are available, as the semantics of the diagnose 8 call
+ * does not fit very well into a Linux call. Diagnose X'08' is described in
+ * CP Programming Services SC24-6084-00
+ *
+ * VMCP_GETCODE: gives the CP return code back to user space
+ * VMCP_SETBUF: sets the response buffer for the next write call. diagnose 8
+ * expects adjacent pages in real storage and to make matters worse, we
+ * dont know the size of the response. Therefore we default to PAGESIZE and
+ * let userspace to change the response size, if userspace expects a bigger
+ * response
+ */
+static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct vmcp_session *session;
+	int temp;
+
+	session = (struct vmcp_session *)file->private_data;
+	if (down_interruptible(&session->mutex))
+		return -ERESTARTSYS;
+	switch (cmd) {
+	case VMCP_GETCODE:
+		temp = session->resp_code;
+		up(&session->mutex);
+		return put_user(temp, (int __user *)arg);
+	case VMCP_SETBUF:
+		free_pages((unsigned long)session->response,
+				get_order(session->bufsize));
+		session->response=NULL;
+		temp = get_user(session->bufsize, (int __user *)arg);
+		if (get_order(session->bufsize) > 8) {
+			session->bufsize = PAGE_SIZE;
+			temp = -EINVAL;
+		}
+		up(&session->mutex);
+		return temp;
+	case VMCP_GETSIZE:
+		temp = session->resp_size;
+		up(&session->mutex);
+		return put_user(temp, (int __user *)arg);
+	default:
+		up(&session->mutex);
+		return -ENOIOCTLCMD;
+	}
+}
+
+static struct file_operations vmcp_fops = {
+	.owner		= THIS_MODULE,
+	.open		= &vmcp_open,
+	.release	= &vmcp_release,
+	.read		= &vmcp_read,
+	.llseek		= &no_llseek,
+	.write		= &vmcp_write,
+	.unlocked_ioctl	= &vmcp_ioctl,
+	.compat_ioctl	= &vmcp_ioctl
+};
+
+static struct miscdevice vmcp_dev = {
+	.name	= "vmcp",
+	.minor	= MISC_DYNAMIC_MINOR,
+	.fops	= &vmcp_fops,
+};
+
+static int __init vmcp_init(void)
+{
+	int ret;
+
+	if (!MACHINE_IS_VM) {
+		printk(KERN_WARNING
+		       "z/VM CP interface is only available under z/VM\n");
+		return -ENODEV;
+	}
+	ret = misc_register(&vmcp_dev);
+	if (!ret)
+		printk(KERN_INFO "z/VM CP interface loaded\n");
+	else
+		printk(KERN_WARNING
+		       "z/VM CP interface not loaded. Could not register misc device.\n");
+	vmcp_debug = debug_register("vmcp", 1, 1, 240);
+	debug_register_view(vmcp_debug, &debug_hex_ascii_view);
+	return ret;
+}
+
+static void __exit vmcp_exit(void)
+{
+	WARN_ON(misc_deregister(&vmcp_dev) != 0);
+	debug_unregister(vmcp_debug);
+	printk(KERN_INFO "z/VM CP interface unloaded.\n");
+}
+
+module_init(vmcp_init);
+module_exit(vmcp_exit);
diff --git a/drivers/s390/char/vmcp.h b/drivers/s390/char/vmcp.h
new file mode 100644
index 00000000000..87389e73046
--- /dev/null
+++ b/drivers/s390/char/vmcp.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2004, 2005 IBM Corporation
+ * Interface implementation for communication with the v/VM control program
+ * Version 1.0
+ * Author(s): Christian Borntraeger <cborntra@de.ibm.com>
+ *
+ *
+ * z/VMs CP offers the possibility to issue commands via the diagnose code 8
+ * this driver implements a character device that issues these commands and
+ * returns the answer of CP.
+ *
+ * The idea of this driver is based on cpint from Neale Ferguson
+ */
+
+#include <asm/semaphore.h>
+#include <linux/ioctl.h>
+
+#define VMCP_GETCODE _IOR(0x10, 1, int)
+#define VMCP_SETBUF _IOW(0x10, 2, int)
+#define VMCP_GETSIZE _IOR(0x10, 3, int)
+
+struct vmcp_session {
+	unsigned int bufsize;
+	char *response;
+	int resp_size;
+	int resp_code;
+	/* As we use copy_from/to_user, which might     *
+	 * sleep and cannot use a spinlock              */
+	struct semaphore mutex;
+};
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index edf50d2bd10..491f00c032e 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -236,7 +236,7 @@ vmlogrdr_get_recording_class_AB(void) {
 	int len,i;
 
 	printk (KERN_DEBUG "vmlogrdr: query command: %s\n", cp_command);
-	cpcmd(cp_command, cp_response, sizeof(cp_response));
+	cpcmd(cp_command, cp_response, sizeof(cp_response), NULL);
 	printk (KERN_DEBUG "vmlogrdr: response: %s", cp_response);
 	len = strnlen(cp_response,sizeof(cp_response));
 	// now the parsing
@@ -288,7 +288,7 @@ vmlogrdr_recording(struct vmlogrdr_priv_t * logptr, int action, int purge) {
 
 		printk (KERN_DEBUG "vmlogrdr: recording command: %s\n",
 			cp_command);
-		cpcmd(cp_command, cp_response, sizeof(cp_response));
+		cpcmd(cp_command, cp_response, sizeof(cp_response), NULL);
 		printk (KERN_DEBUG "vmlogrdr: recording response: %s",
 			cp_response);
 	}
@@ -301,7 +301,7 @@ vmlogrdr_recording(struct vmlogrdr_priv_t * logptr, int action, int purge) {
 		qid_string);
 
 	printk (KERN_DEBUG "vmlogrdr: recording command: %s\n", cp_command);
-	cpcmd(cp_command, cp_response, sizeof(cp_response));
+	cpcmd(cp_command, cp_response, sizeof(cp_response), NULL);
 	printk (KERN_DEBUG "vmlogrdr: recording response: %s",
 		cp_response);
 	/* The recording command will usually answer with 'Command complete'
@@ -548,7 +548,7 @@ vmlogrdr_read (struct file *filp, char *data, size_t count, loff_t * ppos)
 }
 
 static ssize_t
-vmlogrdr_autopurge_store(struct device * dev, const char * buf, size_t count) {
+vmlogrdr_autopurge_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) {
 	struct vmlogrdr_priv_t *priv = dev->driver_data;
 	ssize_t ret = count;
 
@@ -567,7 +567,7 @@ vmlogrdr_autopurge_store(struct device * dev, const char * buf, size_t count) {
 
 
 static ssize_t
-vmlogrdr_autopurge_show(struct device *dev, char *buf) {
+vmlogrdr_autopurge_show(struct device *dev, struct device_attribute *attr, char *buf) {
 	struct vmlogrdr_priv_t *priv = dev->driver_data;
 	return sprintf(buf, "%u\n", priv->autopurge);
 }
@@ -578,7 +578,7 @@ static DEVICE_ATTR(autopurge, 0644, vmlogrdr_autopurge_show,
 
 
 static ssize_t
-vmlogrdr_purge_store(struct device * dev, const char * buf, size_t count) {
+vmlogrdr_purge_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) {
 
 	char cp_command[80];
 	char cp_response[80];
@@ -607,7 +607,7 @@ vmlogrdr_purge_store(struct device * dev, const char * buf, size_t count) {
 			 priv->recording_name);
 
 	printk (KERN_DEBUG "vmlogrdr: recording command: %s\n", cp_command);
-	cpcmd(cp_command, cp_response, sizeof(cp_response));
+	cpcmd(cp_command, cp_response, sizeof(cp_response), NULL);
 	printk (KERN_DEBUG "vmlogrdr: recording response: %s",
 		cp_response);
 
@@ -619,7 +619,7 @@ static DEVICE_ATTR(purge, 0200, NULL, vmlogrdr_purge_store);
 
 
 static ssize_t
-vmlogrdr_autorecording_store(struct device *dev, const char *buf,
+vmlogrdr_autorecording_store(struct device *dev, struct device_attribute *attr, const char *buf,
 			     size_t count) {
 	struct vmlogrdr_priv_t *priv = dev->driver_data;
 	ssize_t ret = count;
@@ -639,7 +639,7 @@ vmlogrdr_autorecording_store(struct device *dev, const char *buf,
 
 
 static ssize_t
-vmlogrdr_autorecording_show(struct device *dev, char *buf) {
+vmlogrdr_autorecording_show(struct device *dev, struct device_attribute *attr, char *buf) {
 	struct vmlogrdr_priv_t *priv = dev->driver_data;
 	return sprintf(buf, "%u\n", priv->autorecording);
 }
@@ -650,7 +650,7 @@ static DEVICE_ATTR(autorecording, 0644, vmlogrdr_autorecording_show,
 
 
 static ssize_t
-vmlogrdr_recording_store(struct device * dev, const char * buf, size_t count) {
+vmlogrdr_recording_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) {
 
 	struct vmlogrdr_priv_t *priv = dev->driver_data;
 	ssize_t ret;
@@ -682,7 +682,7 @@ vmlogrdr_recording_status_show(struct device_driver *driver, char *buf) {
 	char cp_command[] = "QUERY RECORDING ";
 	int len;
 
-	cpcmd(cp_command, buf, 4096);
+	cpcmd(cp_command, buf, 4096, NULL);
 	len = strlen(buf);
 	return len;
 }
@@ -703,7 +703,7 @@ static struct attribute_group vmlogrdr_attr_group = {
 	.attrs = vmlogrdr_attrs,
 };
 
-static struct class_simple *vmlogrdr_class;
+static struct class *vmlogrdr_class;
 static struct device_driver vmlogrdr_driver = {
 	.name = "vmlogrdr",
 	.bus  = &iucv_bus,
@@ -727,7 +727,7 @@ vmlogrdr_register_driver(void) {
 		goto unregdriver;
 	}
 
-	vmlogrdr_class = class_simple_create(THIS_MODULE, "vmlogrdr");
+	vmlogrdr_class = class_create(THIS_MODULE, "vmlogrdr");
 	if (IS_ERR(vmlogrdr_class)) {
 		printk(KERN_ERR "vmlogrdr: failed to create class.\n");
 		ret=PTR_ERR(vmlogrdr_class);
@@ -746,7 +746,7 @@ unregdriver:
 
 static void
 vmlogrdr_unregister_driver(void) {
-	class_simple_destroy(vmlogrdr_class);
+	class_destroy(vmlogrdr_class);
 	vmlogrdr_class = NULL;
 	driver_remove_file(&vmlogrdr_driver, &driver_attr_recording_status);
 	driver_unregister(&vmlogrdr_driver);
@@ -786,7 +786,7 @@ vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) {
 		device_unregister(dev);
 		return ret;
 	}
-	priv->class_device = class_simple_device_add(
+	priv->class_device = class_device_create(
 				vmlogrdr_class,
 				MKDEV(vmlogrdr_major, priv->minor_num),
 				dev,
@@ -806,7 +806,7 @@ vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) {
 
 static int
 vmlogrdr_unregister_device(struct vmlogrdr_priv_t *priv ) {
-	class_simple_device_remove(MKDEV(vmlogrdr_major, priv->minor_num));
+	class_device_destroy(vmlogrdr_class, MKDEV(vmlogrdr_major, priv->minor_num));
 	if (priv->device != NULL) {
 		sysfs_remove_group(&priv->device->kobj, &vmlogrdr_attr_group);
 		device_unregister(priv->device);