diff options
| -rw-r--r-- | include/linux/wakeup_reason.h | 2 | ||||
| -rw-r--r-- | kernel/power/wakeup_reason.c | 19 |
2 files changed, 19 insertions, 2 deletions
diff --git a/include/linux/wakeup_reason.h b/include/linux/wakeup_reason.h index 5f095da2c977..ad8b76936c7f 100644 --- a/include/linux/wakeup_reason.h +++ b/include/linux/wakeup_reason.h @@ -22,4 +22,6 @@ void log_wakeup_reason(int irq); void log_suspend_abort_reason(const char *fmt, ...); +int check_wakeup_reason(int irq); + #endif /* _LINUX_WAKEUP_REASON_H */ diff --git a/kernel/power/wakeup_reason.c b/kernel/power/wakeup_reason.c index 2aacc34ef17c..085c99edca06 100644 --- a/kernel/power/wakeup_reason.c +++ b/kernel/power/wakeup_reason.c @@ -34,7 +34,7 @@ static int irqcount; static bool suspend_abort; static char abort_reason[MAX_SUSPEND_ABORT_LEN]; static struct kobject *wakeup_reason; -static spinlock_t resume_reason_lock; +static DEFINE_SPINLOCK(resume_reason_lock); static ssize_t last_resume_reason_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) @@ -95,6 +95,21 @@ void log_wakeup_reason(int irq) spin_unlock(&resume_reason_lock); } +int check_wakeup_reason(int irq) +{ + int irq_no; + int ret = false; + + spin_lock(&resume_reason_lock); + for (irq_no = 0; irq_no < irqcount; irq_no++) + if (irq_list[irq_no] == irq) { + ret = true; + break; + } + spin_unlock(&resume_reason_lock); + return ret; +} + void log_suspend_abort_reason(const char *fmt, ...) { va_list args; @@ -141,7 +156,7 @@ static struct notifier_block wakeup_reason_pm_notifier_block = { int __init wakeup_reason_init(void) { int retval; - spin_lock_init(&resume_reason_lock); + retval = register_pm_notifier(&wakeup_reason_pm_notifier_block); if (retval) printk(KERN_WARNING "[%s] failed to register PM notifier %d\n", |