[PATCH] time: alarmtimer: Optimization function return value

[Li zeming]

Replace -1 return values with -EPERM.

Signed-off-by: Li zeming <zeming@xxxxxxxxxxxx>
---
 kernel/time/alarmtimer.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 82b28ab0f328..e918d556dd51 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -92,9 +92,9 @@ static int alarmtimer_rtc_add_device(struct device *dev)
 		return -EBUSY;
 
 	if (!test_bit(RTC_FEATURE_ALARM, rtc->features))
-		return -1;
+		return -EPERM;
 	if (!device_may_wakeup(rtc->dev.parent))
-		return -1;
+		return -EPERM;
 
 	pdev = platform_device_register_data(dev, "alarmtimer",
 					     PLATFORM_DEVID_AUTO, NULL, 0);
@@ -104,7 +104,7 @@ static int alarmtimer_rtc_add_device(struct device *dev)
 	spin_lock_irqsave(&rtcdev_lock, flags);
 	if (!IS_ERR(pdev) && !rtcdev) {
 		if (!try_module_get(rtc->owner)) {
-			ret = -1;
+			ret = -EPERM;
 			goto unlock;
 		}
 
@@ -113,7 +113,7 @@ static int alarmtimer_rtc_add_device(struct device *dev)
 		get_device(dev);
 		pdev = NULL;
 	} else {
-		ret = -1;
+		ret = -EPERM;
 	}
 unlock:
 	spin_unlock_irqrestore(&rtcdev_lock, flags);
-- 
2.18.2