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From: Dan Carpenter <error27@gmail.com>
To: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: linux-media@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch -next 1/2] media/az6027: handle -EIO failure
Date: Tue, 04 May 2010 12:31:13 +0000	[thread overview]
Message-ID: <20100504123113.GY29093@bicker> (raw)

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>

diff --git a/drivers/media/dvb/dvb-usb/az6027.c b/drivers/media/dvb/dvb-usb/az6027.c
index baaa301..6681ac1 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;
 	}

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <error27@gmail.com>
To: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: linux-media@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch -next 1/2] media/az6027: handle -EIO failure
Date: Tue, 4 May 2010 14:31:13 +0200	[thread overview]
Message-ID: <20100504123113.GY29093@bicker> (raw)

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>

diff --git a/drivers/media/dvb/dvb-usb/az6027.c b/drivers/media/dvb/dvb-usb/az6027.c
index baaa301..6681ac1 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;
 	}

             reply	other threads:[~2010-05-04 12:31 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-04 12:31 Dan Carpenter [this message]
2010-05-04 12:31 ` [patch -next 1/2] media/az6027: handle -EIO failure Dan Carpenter

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