tree e0a977fef2f05b0863c99738eb170ba852c97e1f
parent 878ae1274944908e1863b06b03a2c94907afaa20
author Akinobu Mita <akinobu.mita@gmail.com> 1281399635 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1281411906 -0700

char: add WARN_ON() in misc_deregister()

misc_deregister() returns an error only when it attempts to unregister
the device that is not registered. This is the driver's bug.

Most of the drivers don't check the return value of misc_deregister().
(It is not bad thing because most of kernel *_unregister() API always
succeed and do not return value)

So it is better to indicate the error by WARN_ON() in misc_deregister().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>