tree 6f8bbc31654c7d3ee8551743e84a85a5d540dd5c
parent 22ea71d7f49c3115e3a9ced5eac109fef26d3559
author Anatolij Gustschin <agust@denx.de> 1330988356 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1330991383 -0800

drivers/rtc/rtc-r9701.c: fix crash in r9701_remove()

If probing the RTC didn't succeed due to failed RTC register access, the
RTC device will be unregistered.  Then, when removing the module
r9701_remove() causes a kernel crash while trying to unregister a not
registered RTC device.  Fix this by doing RTC register access test before
RTC device registration.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
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>