From a18e659170b9c551749e1c8cb5a969ea8d73e378 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Tue, 4 May 2010 09:31:13 -0300
Subject: [PATCH] V4L/DVB: media/az6027: handle -EIO failure
If the az6027_usb_in_op() returns a negative errno ret is -EIO and in
that case the value of b[0] may be undefined. The original code
assigned 0 to ret, but since it's already 0 now we can skip that.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
drivers/media/dvb/dvb-usb/az6027.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/media/dvb/dvb-usb/az6027.c b/drivers/media/dvb/dvb-usb/az6027.c
index baaa301c5768..6681ac1c56e3 100644
--- a/drivers/media/dvb/dvb-usb/az6027.c
+++ b/drivers/media/dvb/dvb-usb/az6027.c
@@ -701,10 +701,7 @@ static int az6027_ci_poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int o
} else
ret = 0;
- if (b[0] == 0) {
- ret = 0;
-
- } else if (b[0] == 1) {
+ if (!ret && b[0] == 1) {
ret = DVB_CA_EN50221_POLL_CAM_PRESENT |
DVB_CA_EN50221_POLL_CAM_READY;
}
--
2.20.1