linux-kernel - [PATCH] [media] v4l2-common: Delete an unnecessary check before the function call "spi_unregister

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Date:	Tue, 19 Jul 2016 20:02:10 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	linux-media@...r.kernel.org, Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] [media] v4l2-common: Delete an unnecessary check before the
 function call "spi_unregister_device"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 19 Jul 2016 19:54:16 +0200

The spi_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/v4l2-core/v4l2-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 5b80850..57cfe26a 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -291,7 +291,7 @@ struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
 error:
 	/* If we have a client but no subdev, then something went wrong and
 	   we must unregister the client. */
-	if (spi && sd == NULL)
+	if (!sd)
 		spi_unregister_device(spi);
 
 	return sd;
-- 
2.9.2