From b68bb2632453a9ca7d10a00d79adf60968cb4c05 Mon Sep 17 00:00:00 2001 From: David Brownell <dbrownell@users.sourceforge.net> Date: Tue, 29 Jul 2008 22:33:30 -0700 Subject: [PATCH] rtc: don't return -EBUSY when mutex_lock_interruptible() fails It was pointed out that the RTC framework handles its mutex locks oddly ... returning -EBUSY when interrupted. This fixes that by returning the value of mutex_lock_interruptible() (i.e. -EINTR). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- drivers/rtc/interface.c | 10 +++++----- drivers/rtc/rtc-dev.c | 2 +- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index d397fa5f3a91..7af60b98d8a4 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -20,7 +20,7 @@ int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm) err = mutex_lock_interruptible(&rtc->ops_lock); if (err) - return -EBUSY; + return err; if (!rtc->ops) err = -ENODEV; @@ -46,7 +46,7 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) err = mutex_lock_interruptible(&rtc->ops_lock); if (err) - return -EBUSY; + return err; if (!rtc->ops) err = -ENODEV; @@ -66,7 +66,7 @@ int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs) err = mutex_lock_interruptible(&rtc->ops_lock); if (err) - return -EBUSY; + return err; if (!rtc->ops) err = -ENODEV; @@ -106,7 +106,7 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *al err = mutex_lock_interruptible(&rtc->ops_lock); if (err) - return -EBUSY; + return err; if (rtc->ops == NULL) err = -ENODEV; @@ -293,7 +293,7 @@ int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) err = mutex_lock_interruptible(&rtc->ops_lock); if (err) - return -EBUSY; + return err; if (!rtc->ops) err = -ENODEV; diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c index 0a870b7e5c32..ae3bd4de7675 100644 --- a/drivers/rtc/rtc-dev.c +++ b/drivers/rtc/rtc-dev.c @@ -221,7 +221,7 @@ static long rtc_dev_ioctl(struct file *file, err = mutex_lock_interruptible(&rtc->ops_lock); if (err) - return -EBUSY; + return err; /* check that the calling task has appropriate permissions * for certain ioctls. doing this check here is useful -- 2.20.1