Nov 23 2014

video: mx3fb: Deletion of an unnecessary check before the function call “backlight_device_unregister” 

Author: Markus Elfring <elfring@users.sourceforge.net>

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 
Signed-off-by: Tomi Valkeinen 

---
 drivers/video/fbdev/mx3fb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
 
diff --git a/drivers/video/fbdev/mx3fb.c b/drivers/video/fbdev/mx3fb.c
index 23ec781..f23fca0 100644
--- a/drivers/video/fbdev/mx3fb.c
+++ b/drivers/video/fbdev/mx3fb.c
@@ -334,8 +334,7 @@ static void mx3fb_init_backlight(struct mx3fb_data *fbd)
 
 static void mx3fb_exit_backlight(struct mx3fb_data *fbd)
 {
-	if (fbd->bl)
-		backlight_device_unregister(fbd->bl);
+	backlight_device_unregister(fbd->bl);
 }
 
 static void mx3fb_dma_done(void *);

qlambert