diff mbox

[v3] video-lp8788: Delete a check before backlight_device_unregister()

Message ID 5593C14A.8020700@users.sourceforge.net (mailing list archive)
State New, archived
Headers show

Commit Message

SF Markus Elfring July 1, 2015, 10:30 a.m. UTC 
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 1 Jul 2015 12:08:31 +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@users.sourceforge.net>
---
 drivers/video/backlight/lp8788_bl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Han Jingoo July 2, 2015, 4:44 a.m. UTC | #1 
> On 2015. 7. 1., at PM 7:30, SF Markus Elfring <elfring@users.sourceforge.net> wrote:
> 
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Wed, 1 Jul 2015 12:08:31 +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@users.sourceforge.net>

It looks good.

Acked-by: Jingoo Han <jingoohan1@gmail.com>

> ---
> 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 e418d5b..5d583d7 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,
> -- 
> 2.4.5
> 
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Lee Jones July 7, 2015, 7:13 a.m. UTC | #2 
On Wed, 01 Jul 2015, SF Markus Elfring wrote:

> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Wed, 1 Jul 2015 12:08:31 +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@users.sourceforge.net>
> ---
>  drivers/video/backlight/lp8788_bl.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Applied, thanks.

> diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c
> index e418d5b..5d583d7 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,
diff mbox

Patch

diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c
index e418d5b..5d583d7 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,