[PATCH] s390 (4/6): 3270 console driver.

[Martin Schwidefsky]

[PATCH] s390: 3270 driver.

From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>

3270 device driver change:
 - Add missing irb error checking.

diffstat:
 drivers/s390/char/raw3270.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff -urN linux-2.6/drivers/s390/char/raw3270.c linux-2.6-s390/drivers/s390/char/raw3270.c
--- linux-2.6/drivers/s390/char/raw3270.c	Wed Apr 28 17:51:15 2004
+++ linux-2.6-s390/drivers/s390/char/raw3270.c	Wed Apr 28 17:51:39 2004
@@ -345,8 +345,10 @@
 	rq = (struct raw3270_request *) intparm;
 	view = rq ? rq->view : rp->view;
 
-	if (irb->scsw.dstat == 
-	    (DEV_STAT_CHN_END | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP)) {
+	if (IS_ERR(irb))
+		rc = RAW3270_IO_RETRY;
+	else if (irb->scsw.dstat ==  (DEV_STAT_CHN_END | DEV_STAT_DEV_END |
+				      DEV_STAT_UNIT_EXCEP)) {
 		/* Handle CE-DE-UE and subsequent UDE */
 		set_bit(RAW3270_FLAGS_BUSY, &rp->flags);
 		rc = RAW3270_IO_BUSY;
-
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