drivers/acpi/processor_thermal.c

Commit Message

Darren Jenkins Feb. 11, 2010, 9:56 a.m. UTC

None

Patch

diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 6deafb4..ec33554 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -379,9 +379,14 @@  processor_get_max_state(struct thermal_cooling_device *cdev,
 			unsigned long *state)
 {
 	struct acpi_device *device = cdev->devdata;
-	struct acpi_processor *pr = acpi_driver_data(device);
+	struct acpi_processor *pr;
 
-	if (!device || !pr)
+	if (!device)
+		return -EINVAL;
+
+	pr = acpi_driver_data(device);
+
+	if (!pr)
 		return -EINVAL;
 
 	*state = acpi_processor_max_state(pr);
@@ -393,9 +398,14 @@  processor_get_cur_state(struct thermal_cooling_device *cdev,
 			unsigned long *cur_state)
 {
 	struct acpi_device *device = cdev->devdata;
-	struct acpi_processor *pr = acpi_driver_data(device);
+	struct acpi_processor *pr;
+
+	if (!device)
+		return -EINVAL;
 
-	if (!device || !pr)
+	pr = acpi_driver_data(device);
+
+	if (!pr)
 		return -EINVAL;
 
 	*cur_state = cpufreq_get_cur_state(pr->id);
@@ -409,18 +419,20 @@  processor_set_cur_state(struct thermal_cooling_device *cdev,
 			unsigned long state)
 {
 	struct acpi_device *device = cdev->devdata;
-	struct acpi_processor *pr = acpi_driver_data(device);
+	struct acpi_processor *pr;
 	int result = 0;
 	int max_pstate;
 
-	if (!device || !pr)
+	if (!device)
 		return -EINVAL;
 
-	max_pstate = cpufreq_get_max_state(pr->id);
+	pr = acpi_driver_data(device);
 
-	if (state > acpi_processor_max_state(pr))
+	if (!pr || state > acpi_processor_max_state(pr))
 		return -EINVAL;
 
+	max_pstate = cpufreq_get_max_state(pr->id);
+
 	if (state <= max_pstate) {
 		if (pr->flags.throttling && pr->throttling.state)
 			result = acpi_processor_set_throttling(pr, 0, false);