[PATCH 0/2] [media] dmxdev: Fine-tuning for two function implementations

[PATCH 0/2] [media] dmxdev: Fine-tuning for two function implementations

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 26 Sep 2017 15:30:03 +0200

Two update suggestions were taken into account
from static source code analysis.

Markus Elfring (2):
  Use common error handling code in dvb_dmxdev_start_feed()
  Improve a size determination in dvb_dmxdev_add_pid()

 drivers/media/dvb-core/dmxdev.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

-- 
2.14.1

[PATCH 1/2] [media] dmxdev: Use common error handling code in dvb_dmxdev_start_feed()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.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@users.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

[PATCH 2/2] [media] dmxdev: Improve a size determination in dvb_dmxdev_add_pid()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 26 Sep 2017 15:22:57 +0200

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/media/dvb-core/dmxdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/dvb-core/dmxdev.c b/drivers/media/dvb-core/dmxdev.c
index f8bf7459d5ca..8e0f91775fe4 100644
--- a/drivers/media/dvb-core/dmxdev.c
+++ b/drivers/media/dvb-core/dmxdev.c
@@ -809,7 +809,7 @@ static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
 	    (!list_empty(&filter->feed.ts)))
 		return -EINVAL;
 
-	feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
+	feed = kzalloc(sizeof(*feed), GFP_KERNEL);
 	if (feed == NULL)
 		return -ENOMEM;
 
-- 
2.14.1