Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-merge-2.6

* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-merge-2.6: (87 commits)
  Fix FADT parsing
  Add the ability to reset the machine using the RESET_REG in ACPI's FADT table.
  ACPI: use dev_printk when possible
  PNPACPI: add support for HP vendor-specific CCSR descriptors
  PNP: avoid legacy IDE IRQs
  PNP: convert resource options to single linked list
  ISAPNP: handle independent options following dependent ones
  PNP: remove extra 0x100 bit from option priority
  PNP: support optional IRQ resources
  PNP: rename pnp_register_*_resource() local variables
  PNPACPI: ignore _PRS interrupt numbers larger than PNP_IRQ_NR
  PNP: centralize resource option allocations
  PNP: remove redundant pnp_can_configure() check
  PNP: make resource assignment functions return 0 (success) or -EBUSY (failure)
  PNP: in debug resource dump, make empty list obvious
  PNP: improve resource assignment debug
  PNP: increase I/O port & memory option address sizes
  PNP: introduce pnp_irq_mask_t typedef
  PNP: make resource option structures private to PNP subsystem
  PNP: define PNP-specific IORESOURCE_IO_* flags alongside IRQ, DMA, MEM
  ...

1 files changed, 27 insertions, 11 deletions

diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index bb06738860c..0622ace0522 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -71,7 +71,7 @@ static int acpi_processor_update_tsd_coord(void)
 	 * coordination between all CPUs.
 	 */
 	for_each_possible_cpu(i) {
-		pr = processors[i];
+		pr = per_cpu(processors, i);
 		if (!pr)
 			continue;
 
@@ -93,7 +93,7 @@ static int acpi_processor_update_tsd_coord(void)
 
 	cpus_clear(covered_cpus);
 	for_each_possible_cpu(i) {
-		pr = processors[i];
+		pr = per_cpu(processors, i);
 		if (!pr)
 			continue;
 
@@ -119,7 +119,7 @@ static int acpi_processor_update_tsd_coord(void)
 			if (i == j)
 				continue;
 
-			match_pr = processors[j];
+			match_pr = per_cpu(processors, j);
 			if (!match_pr)
 				continue;
 
@@ -152,7 +152,7 @@ static int acpi_processor_update_tsd_coord(void)
 			if (i == j)
 				continue;
 
-			match_pr = processors[j];
+			match_pr = per_cpu(processors, j);
 			if (!match_pr)
 				continue;
 
@@ -172,7 +172,7 @@ static int acpi_processor_update_tsd_coord(void)
 
 err_ret:
 	for_each_possible_cpu(i) {
-		pr = processors[i];
+		pr = per_cpu(processors, i);
 		if (!pr)
 			continue;
 
@@ -214,7 +214,7 @@ static int acpi_processor_throttling_notifier(unsigned long event, void *data)
 	struct acpi_processor_throttling *p_throttling;
 
 	cpu = p_tstate->cpu;
-	pr = processors[cpu];
+	pr = per_cpu(processors, cpu);
 	if (!pr) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid pr pointer\n"));
 		return 0;
@@ -1035,7 +1035,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
 		 * cpus.
 		 */
 		for_each_cpu_mask(i, online_throttling_cpus) {
-			match_pr = processors[i];
+			match_pr = per_cpu(processors, i);
 			/*
 			 * If the pointer is invalid, we will report the
 			 * error message and continue.
@@ -1232,7 +1232,10 @@ static ssize_t acpi_processor_write_throttling(struct file *file,
 	int result = 0;
 	struct seq_file *m = file->private_data;
 	struct acpi_processor *pr = m->private;
-	char state_string[12] = { '\0' };
+	char state_string[5] = "";
+	char *charp = NULL;
+	size_t state_val = 0;
+	char tmpbuf[5] = "";
 
 	if (!pr || (count > sizeof(state_string) - 1))
 		return -EINVAL;
@@ -1241,10 +1244,23 @@ static ssize_t acpi_processor_write_throttling(struct file *file,
 		return -EFAULT;
 
 	state_string[count] = '\0';
+	if ((count > 0) && (state_string[count-1] == '\n'))
+		state_string[count-1] = '\0';
 
-	result = acpi_processor_set_throttling(pr,
-					       simple_strtoul(state_string,
-							      NULL, 0));
+	charp = state_string;
+	if ((state_string[0] == 't') || (state_string[0] == 'T'))
+		charp++;
+
+	state_val = simple_strtoul(charp, NULL, 0);
+	if (state_val >= pr->throttling.state_count)
+		return -EINVAL;
+
+	snprintf(tmpbuf, 5, "%zu", state_val);
+
+	if (strcmp(tmpbuf, charp) != 0)
+		return -EINVAL;
+
+	result = acpi_processor_set_throttling(pr, state_val);
 	if (result)
 		return result;