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alarmtimer: Drop device refcount after rtc_open()

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class_find_device() takes a refcount on the rtc device. rtc_open()
takes another one, so we can drop it after the rtc_open() call.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Thomas Gleixner 2011-05-04 08:18:34 +02:00
parent ce788f930b
commit 179eb03268
1 changed files with 7 additions and 1 deletions
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8
kernel/time/alarmtimer.c
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@ -675,8 +675,14 @@ static int __init alarmtimer_init_late(void)
/* Find an rtc device and init the rtc_timer */ /* Find an rtc device and init the rtc_timer */
dev = class_find_device(rtc_class, NULL, &str, has_wakealarm); dev = class_find_device(rtc_class, NULL, &str, has_wakealarm);
/* If we have a device then str is valid. See has_wakealarm() */ /* If we have a device then str is valid. See has_wakealarm() */
if (dev) if (dev) {
rtcdev = rtc_class_open(str); rtcdev = rtc_class_open(str);
/*
* Drop the reference we got in class_find_device,
* rtc_open takes its own.
*/
put_device(dev);
}
if (!rtcdev) { if (!rtcdev) {
printk(KERN_WARNING "No RTC device found, ALARM timers will" printk(KERN_WARNING "No RTC device found, ALARM timers will"
" not wake from suspend"); " not wake from suspend");