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path: root/drivers/cpuidle/coupled.c
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Diffstat (limited to 'drivers/cpuidle/coupled.c')
-rw-r--r--drivers/cpuidle/coupled.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
index 2c9bf269223..3265844839b 100644
--- a/drivers/cpuidle/coupled.c
+++ b/drivers/cpuidle/coupled.c
@@ -678,10 +678,22 @@ static int cpuidle_coupled_cpu_notify(struct notifier_block *nb,
int cpu = (unsigned long)hcpu;
struct cpuidle_device *dev;
+ switch (action & ~CPU_TASKS_FROZEN) {
+ case CPU_UP_PREPARE:
+ case CPU_DOWN_PREPARE:
+ case CPU_ONLINE:
+ case CPU_DEAD:
+ case CPU_UP_CANCELED:
+ case CPU_DOWN_FAILED:
+ break;
+ default:
+ return NOTIFY_OK;
+ }
+
mutex_lock(&cpuidle_lock);
dev = per_cpu(cpuidle_devices, cpu);
- if (!dev->coupled)
+ if (!dev || !dev->coupled)
goto out;
switch (action & ~CPU_TASKS_FROZEN) {