Commit ea9c167d authored by Lan Tianyu's avatar Lan Tianyu Committed by Rafael J. Wysocki

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: default avatarLan Tianyu <tianyu.lan@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 515afdcb
...@@ -120,6 +120,7 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb, ...@@ -120,6 +120,7 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb,
unsigned int cpu = (unsigned long)hcpu; unsigned int cpu = (unsigned long)hcpu;
struct acpi_processor *pr = per_cpu(processors, cpu); struct acpi_processor *pr = per_cpu(processors, cpu);
struct acpi_device *device; struct acpi_device *device;
action &= ~CPU_TASKS_FROZEN;
/* /*
* CPU_STARTING and CPU_DYING must not sleep. Return here since * CPU_STARTING and CPU_DYING must not sleep. Return here since
......
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