[S390] qdio: fix compile warning under 31 bit

The QEBSM instructions are only available for CONFIG_64BIT, they are not
used under 31 bit. Make compiler happy about the false positive:

drivers/s390/cio/qdio_main.c: In function ?qdio_inbound_q_done?:
drivers/s390/cio/qdio_main.c:532: warning: ?state? may be used uninitialized in this function

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index a44a8c5b91be..9e6ab41e5a3c 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -529,7 +529,7 @@ int qdio_inbound_q_moved(struct qdio_q *q)
 
 static int qdio_inbound_q_done(struct qdio_q *q)
 {
-        unsigned char state;
+        unsigned char state = 0;
 #ifdef CONFIG_QDIO_DEBUG
         char dbf_text[15];
 #endif