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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-07-29 22:33:30 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-30 09:41:45 -0700
commitb68bb2632453a9ca7d10a00d79adf60968cb4c05 (patch)
tree3093bd33da75ce165d0f9b0af8931d7eb4d4488a
parent950d442ad053e660538cdaa6efc0e060c2a65062 (diff)
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>
-rw-r--r--drivers/rtc/interface.c10
-rw-r--r--drivers/rtc/rtc-dev.c2
2 files changed, 6 insertions, 6 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index d397fa5f3a9..7af60b98d8a 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 0a870b7e5c3..ae3bd4de767 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