The patch titled
Subject: rtc: recycle id when unloading a rtc driver
has been added to the -mm tree. Its filename is
rtc-recycle-id-when-unloading-a-rtc-driver.patch
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------------------------------------------------------
From: Vincent Palatin <vpalatin@xxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/class.c | 1 +
1 file changed, 1 insertion(+)
diff -puN drivers/rtc/class.c~rtc-recycle-id-when-unloading-a-rtc-driver drivers/rtc/class.c
--- a/drivers/rtc/class.c~rtc-recycle-id-when-unloading-a-rtc-driver
+++ a/drivers/rtc/class.c
@@ -238,6 +238,7 @@ void rtc_device_unregister(struct rtc_de
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);
}
_
Patches currently in -mm which might be from vpalatin@xxxxxxxxxxxx are
rtc-recycle-id-when-unloading-a-rtc-driver.patch
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