linux-kernel - [PATCH 1/1] [media] ddbridge: Deletion of an unnecessary check before the function call "dvb_unregister

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Date:	Sun, 30 Nov 2014 22:55:18 +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 1/1] [media] ddbridge: Deletion of an unnecessary check before
 the function call "dvb_unregister_device"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 30 Nov 2014 22:50:20 +0100

The dvb_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/pci/ddbridge/ddbridge-core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c
index c82e855..9e3492e 100644
--- a/drivers/media/pci/ddbridge/ddbridge-core.c
+++ b/drivers/media/pci/ddbridge/ddbridge-core.c
@@ -1118,8 +1118,7 @@ static void ddb_ports_detach(struct ddb *dev)
 			dvb_input_detach(port->input[1]);
 			break;
 		case DDB_PORT_CI:
-			if (port->output->dev)
-				dvb_unregister_device(port->output->dev);
+			dvb_unregister_device(port->output->dev);
 			if (port->en) {
 				ddb_input_stop(port->input[0]);
 				ddb_output_stop(port->output);
-- 
2.1.3

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