From: Dave Jones <davej@redhat.com>

Whoops, better hope this never gets passed a null dev in its current state.

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Michael Holzheu <holzheu@de.ibm.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/s390/net/claw.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/s390/net/claw.c~s390-broken-null-test-in-claw-driver drivers/s390/net/claw.c
--- a/drivers/s390/net/claw.c~s390-broken-null-test-in-claw-driver
+++ a/drivers/s390/net/claw.c
@@ -529,7 +529,7 @@ claw_open(struct net_device *dev)
         printk(KERN_INFO "%s:%s Enter  \n",dev->name,__FUNCTION__);
 #endif
 	CLAW_DBF_TEXT(4,trace,"open");
-	if (!dev | (dev->name[0] == 0x00)) {
+	if (!dev || (dev->name[0] == 0x00)) {
 		CLAW_DBF_TEXT(2,trace,"BadDev");
 	 	printk(KERN_WARNING "claw: Bad device at open failing \n");
 		return -ENODEV;
_