linux-kernel - [PATCH 1/2] [media] dmxdev: Use common error handling code in dvb_dmxdev_start

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Message-ID: <2c7d9cb4-983c-154c-6c0c-9d6a41bb82e1@users.sourceforge.net>
Date:   Tue, 26 Sep 2017 15:34:45 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-media@...r.kernel.org,
        Devendra Sharma <devendra.sharma9091@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/2] [media] dmxdev: Use common error handling code in
 dvb_dmxdev_start_feed()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 26 Sep 2017 15:12:47 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/dvb-core/dmxdev.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/media/dvb-core/dmxdev.c b/drivers/media/dvb-core/dmxdev.c
index 45e91add73ba..f8bf7459d5ca 100644
--- a/drivers/media/dvb-core/dmxdev.c
+++ b/drivers/media/dvb-core/dmxdev.c
@@ -594,18 +594,18 @@ static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
 	tsfeed->priv = filter;
 
 	ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, timeout);
-	if (ret < 0) {
-		dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
-		return ret;
-	}
+	if (ret < 0)
+		goto release_feed;
 
 	ret = tsfeed->start_filtering(tsfeed);
-	if (ret < 0) {
-		dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
-		return ret;
-	}
+	if (ret < 0)
+		goto release_feed;
 
 	return 0;
+
+release_feed:
+	dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
+	return ret;
 }
 
 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
-- 
2.14.1