ACPI / processor: Make acpi_cpu_soft_notify() process CPU FROZEN events
CPU hotplug happens during S2RAM and CPU notify event will be CPU_XXX_FROZEN.
acpi_cpu_soft_notify() ignores to check these events. This also may make
acpi_cpu_soft_notify() fall into sleep during CPU_DYING/STARTING_FROZEN
events which don't allow callbacks to sleep. This patch is to fix it.
Signed-off-by: Lan Tianyu <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 4fcbd67..d9f7158 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -120,6 +120,7 @@
unsigned int cpu = (unsigned long)hcpu;
struct acpi_processor *pr = per_cpu(processors, cpu);
struct acpi_device *device;
+ action &= ~CPU_TASKS_FROZEN;
/*
* CPU_STARTING and CPU_DYING must not sleep. Return here since
