diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2012-10-04 17:13:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 03:05:02 +0900 |
| commit | 2830a6d20139df2198d63235df7957712adb28e5 (patch) | |
| tree | 6883cfb98d7f7254824d2a8f42dba2d1de25f689 | |
| parent | 179a502f8c4605c502f798e18f66ae096fe42402 (diff) | |
| download | linux-2830a6d20139df2198d63235df7957712adb28e5.tar.bz2 | |
rtc: recycle id when unloading a rtc driver
When calling rtc_device_unregister, we are not freeing the id used by the
driver. So when doing a unload/load cycle for a RTC driver (e.g. rmmod
rtc_cmos && modprobe rtc_cmos), its id is incremented by one. As a
consequence, we no longer have neither an rtc0 driver nor a
/proc/driver/rtc (as it only exists for the first driver).
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Cc: 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/class.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index dc4c2748bbc3..37b1d82fda08 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -238,6 +238,7 @@ void rtc_device_unregister(struct rtc_device *rtc) rtc_proc_del_device(rtc); device_unregister(&rtc->dev); rtc->ops = NULL; + ida_simple_remove(&rtc_ida, rtc->id); mutex_unlock(&rtc->ops_lock); put_device(&rtc->dev); } |