linux-kernel - [PATCH] [media] au0828: Delete unnecessary checks before the function call "video_unregister

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Date:	Tue, 03 Feb 2015 19:03:37 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-media@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] [media] au0828: Delete unnecessary checks before the function
 call "video_unregister_device"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 3 Feb 2015 19:00:25 +0100

The video_unregister_device() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/usb/au0828/au0828-video.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
index 5f337b1..e593fb5 100644
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -870,12 +870,8 @@ void au0828_analog_unregister(struct au0828_dev *dev)
 {
 	dprintk(1, "au0828_release_resources called\n");
 	mutex_lock(&au0828_sysfs_lock);
-
-	if (dev->vdev)
-		video_unregister_device(dev->vdev);
-	if (dev->vbi_dev)
-		video_unregister_device(dev->vbi_dev);
-
+	video_unregister_device(dev->vdev);
+	video_unregister_device(dev->vbi_dev);
 	mutex_unlock(&au0828_sysfs_lock);
 }
 
-- 
2.2.2

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