s390/vmur: fix irq pointer dereference in int handler
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Fri, 19 Aug 2016 17:57:49 +0000 (19:57 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 20 Sep 2016 12:26:32 +0000 (14:26 +0200)
commitf622b517563b0d3be6c41e932124e0b717149ad8
treef4e6b40824f1ca63d790c6487dfd03395140941c
parenteed5c4b117d1f77553d517072584c4ac779af0ba
s390/vmur: fix irq pointer dereference in int handler

"irq" in vmur's int handler can be an error pointer. Don't dereference
this pointer in that case.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/char/vmur.c