diff options
Diffstat (limited to 'drivers/cpuidle/coupled.c')
| -rw-r--r-- | drivers/cpuidle/coupled.c | 14 |
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) { |