linux-kernel - [PATCH] drm/bridge: ps8622: Delete an unnecessary check before backlight_device

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Message-ID: <791089e4-201c-ad01-9c3b-f49835765177@users.sourceforge.net>
Date:	Fri, 22 Jul 2016 14:54:50 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	dri-devel@...ts.freedesktop.org,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	David Airlie <airlied@...ux.ie>,
	Thierry Reding <treding@...dia.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] drm/bridge: ps8622: Delete an unnecessary check before
 backlight_device_unregister()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 22 Jul 2016 14:45:51 +0200

The backlight_device_unregister() 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/gpu/drm/bridge/parade-ps8622.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c
index 5cd8dd7..583b8ce 100644
--- a/drivers/gpu/drm/bridge/parade-ps8622.c
+++ b/drivers/gpu/drm/bridge/parade-ps8622.c
@@ -636,9 +636,7 @@ static int ps8622_remove(struct i2c_client *client)
 {
 	struct ps8622_bridge *ps8622 = i2c_get_clientdata(client);
 
-	if (ps8622->bl)
-		backlight_device_unregister(ps8622->bl);
-
+	backlight_device_unregister(ps8622->bl);
 	drm_bridge_remove(&ps8622->bridge);
 
 	return 0;
-- 
2.9.2