cpuidle / ACPI: fix potential NULL pointer dereference
The dereference should be moved below the NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 3655ab9..e8086c7 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1132,7 +1132,7 @@
int acpi_processor_hotplug(struct acpi_processor *pr)
{
int ret = 0;
- struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
+ struct cpuidle_device *dev;
if (disabled_by_idle_boot_param())
return 0;
@@ -1147,6 +1147,7 @@
if (!pr->flags.power_setup_done)
return -ENODEV;
+ dev = per_cpu(acpi_cpuidle_device, pr->id);
cpuidle_pause_and_lock();
cpuidle_disable_device(dev);
acpi_processor_get_power_info(pr);