From: Andrew Morton <[email protected]>
Subject: revert "rtc: recycle id when unloading a rtc driver"

Revert

commit 2830a6d20139df2198d63235df7957712adb28e5
Author: Vincent Palatin <[email protected]>
Date:   Thu Oct 4 17:13:52 2012 -0700

    rtc: recycle id when unloading a rtc driver


We already perform the ida_simple_remove() in rtc_device_release(), which
is an appropriate place.  2830a6d20 ("rtc: recycle id when unloading a rtc
driver") caused the kernel to emit

        ida_remove called for id=0 which is not allocated.

warnings when rtc_device_release() tries to release an alread-released ID.

Let's restore things to their previous state and then work out why
Vincent's kernel wasn't calling rtc_device_release() - presumably a bug in
a specific sub-driver.

Reported-by: Lothar Waßmann <[email protected]>
Acked-by: Alexander Holler <[email protected]>
Cc: Vincent Palatin <[email protected]>
Cc: <[email protected]>            [3.7.x]
Signed-off-by: Andrew Morton <[email protected]>
---

 drivers/rtc/class.c |    1 -
 1 file changed, 1 deletion(-)

diff -puN drivers/rtc/class.c~revert-rtc-recycle-id-when-unloading-a-rtc-driver 
drivers/rtc/class.c
--- a/drivers/rtc/class.c~revert-rtc-recycle-id-when-unloading-a-rtc-driver
+++ a/drivers/rtc/class.c
@@ -244,7 +244,6 @@ 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);
        }
_
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