# \[PATCH v2\] backlight: lp8788: Deletion of a check before backlight\_device\_unregister() - From: SF Markus Elfring \ - Date: 2014-11-24 18:05:48 - List: linux-fbdev - Page: https://ratatoskr.run/linux-fbdev/2014/11/4381165 - Thread: https://ratatoskr.run/linux-fbdev/2014/11/4380455/t.md ```text From: Markus Elfring 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 --- drivers/video/backlight/lp8788_bl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c index d6c4f6a..24a055c 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, -- 2.1.3 ```