From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 1 Jul 2015 10:08:31 +0000 (+0200)
Subject: backlight: lp8788_bl: Delete a check before backlight_device_unregister()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=85463d8ed1ffae0eb0bd070e400f33918a6696ef;p=deliverable%2Flinux.git

backlight: lp8788_bl: Delete a check before backlight_device_unregister()

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@users.sourceforge.net>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---

diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c
index e418d5b1aa55..5d583d7a517b 100644
--- a/drivers/video/backlight/lp8788_bl.c
+++ b/drivers/video/backlight/lp8788_bl.c
@@ -221,8 +221,7 @@ static void lp8788_backlight_unregister(struct lp8788_bl *bl)
 {
 	struct backlight_device *bl_dev = bl->bl_dev;
 
-	if (bl_dev)
-		backlight_device_unregister(bl_dev);
+	backlight_device_unregister(bl_dev);
 }
 
 static ssize_t lp8788_get_bl_ctl_mode(struct device *dev,