linux-kernel - [PATCH 2/3] alarmtimer: Using the alarmtimer_get

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Date:	Thu, 01 Nov 2012 00:23:03 +0800
From:	Chuansheng Liu <chuansheng.liu@...el.com>
To:	john.stultz@...aro.org, tglx@...utronix.de,
	gregkh@...uxfoundation.org
Cc:	linux-kernel@...r.kernel.org, chuansheng.liu@...el.com
Subject: [PATCH 2/3] alarmtimer: Using the alarmtimer_get_rtcdev for all
 posix clock interface


Some posix clock interface directly use the variable rtcdev,
cleanup it here by alarmtimer_get_rtcdev().

Signed-off-by: liu chuansheng <chuansheng.liu@...el.com>
---
 kernel/time/alarmtimer.c |   13 ++++++-------
 1 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 4fc17cb..5490fa8 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -86,11 +86,10 @@ static int alarmtimer_rtc_add_device(struct device *dev,
 		return -1;
 
 	mutex_lock(&rtcdev_mutex);
-	if (!rtcdev) {
-		rtcdev = rtc;
-		/* hold a reference so it doesn't go away */
-		get_device(dev);
-	}
+	rtcdev = rtc;
+	/* hold a reference so it doesn't go away */
+	get_device(dev);
+
 	mutex_unlock(&rtcdev_mutex);
 	return 0;
 }
@@ -516,7 +515,7 @@ static void alarm_timer_get(struct k_itimer *timr,
  */
 static int alarm_timer_del(struct k_itimer *timr)
 {
-	if (!rtcdev)
+	if (!alarmtimer_get_rtcdev())
 		return -ENOTSUPP;
 
 	if (alarm_try_to_cancel(&timr->it.alarm.alarmtimer) < 0)
@@ -538,7 +537,7 @@ static int alarm_timer_set(struct k_itimer *timr, int flags,
 				struct itimerspec *new_setting,
 				struct itimerspec *old_setting)
 {
-	if (!rtcdev)
+	if (!alarmtimer_get_rtcdev())
 		return -ENOTSUPP;
 
 	if (old_setting)
-- 
1.7.0.4



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