diff options
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c b/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c index ce6c739c51e5..06d9101a5d49 100644 --- a/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c +++ b/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c @@ -75,7 +75,7 @@ static ssize_t fsl_timer_wakeup_store(struct device *dev, if (kstrtoll(buf, 0, &interval)) return -EINVAL; - mutex_lock(&sysfs_lock); + guard(mutex)(&sysfs_lock); if (fsl_wakeup->timer) { disable_irq_wake(fsl_wakeup->timer->irq); @@ -83,31 +83,23 @@ static ssize_t fsl_timer_wakeup_store(struct device *dev, fsl_wakeup->timer = NULL; } - if (!interval) { - mutex_unlock(&sysfs_lock); + if (!interval) return count; - } fsl_wakeup->timer = mpic_request_timer(fsl_mpic_timer_irq, fsl_wakeup, interval); - if (!fsl_wakeup->timer) { - mutex_unlock(&sysfs_lock); + if (!fsl_wakeup->timer) return -EINVAL; - } ret = enable_irq_wake(fsl_wakeup->timer->irq); if (ret) { mpic_free_timer(fsl_wakeup->timer); fsl_wakeup->timer = NULL; - mutex_unlock(&sysfs_lock); - return ret; } mpic_start_timer(fsl_wakeup->timer); - mutex_unlock(&sysfs_lock); - return count; } |