s390: remove WARN_ON for misc_deregister() failures
The previous change added WARN_ON() in misc_deregister(). So it is not
necessary to WARN_ON() misc_deregister() failure by callers.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index dd88803..7158f95 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -701,7 +701,7 @@
void dasd_eer_exit(void)
{
if (dasd_eer_dev) {
- WARN_ON(misc_deregister(dasd_eer_dev) != 0);
+ misc_deregister(dasd_eer_dev);
kfree(dasd_eer_dev);
dasd_eer_dev = NULL;
}