Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1214329 > unrolled thread

[PATCH] leds: leds-cobalt-qube: Use devm_led_classdev_register

Back to article view | Back to linux.kernel

Contents

  [PATCH] leds: leds-cobalt-qube: Use devm_led_classdev_register Vaishali Thakkar <vthakkar1994@gmail.com> - 2015-08-27 07:20 +0200
    Re: [PATCH] leds: leds-cobalt-qube: Use devm_led_classdev_register Jacek Anaszewski <j.anaszewski@samsung.com> - 2015-08-27 09:30 +0200
      Re: [PATCH] leds: leds-cobalt-qube: Use devm_led_classdev_register Vaishali Thakkar <vthakkar1994@gmail.com> - 2015-08-28 10:20 +0200

#1214329 — [PATCH] leds: leds-cobalt-qube: Use devm_led_classdev_register

Use resource-managed function devm_led_classdev_register instead
of led_classdev_register to make the error-path simpler.

To be compatible with the change, goto is replaced with direct
return and unneeded label is dropped. Also, remove redundant
cobalt_qube_led_remove.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
---
 drivers/leds/leds-cobalt-qube.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c
index d975220..59818df 100644
--- a/drivers/leds/leds-cobalt-qube.c
+++ b/drivers/leds/leds-cobalt-qube.c
@@ -49,31 +49,15 @@ static int cobalt_qube_led_probe(struct platform_device *pdev)
 	led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
 	writeb(led_value, led_port);
 
-	retval = led_classdev_register(&pdev->dev, &qube_front_led);
+	retval = devm_led_classdev_register(&pdev->dev, &qube_front_led);
 	if (retval)
-		goto err_null;
-
-	return 0;
-
-err_null:
-	led_port = NULL;
-
-	return retval;
-}
-
-static int cobalt_qube_led_remove(struct platform_device *pdev)
-{
-	led_classdev_unregister(&qube_front_led);
-
-	if (led_port)
-		led_port = NULL;
+		return retval;
 
 	return 0;
 }
 
 static struct platform_driver cobalt_qube_led_driver = {
 	.probe	= cobalt_qube_led_probe,
-	.remove	= cobalt_qube_led_remove,
 	.driver	= {
 		.name	= "cobalt-qube-leds",
 	},
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[toc] | [next] | [standalone]

#1214364

Hi Vaishali,

Thanks for the patch.

On 08/27/2015 07:13 AM, Vaishali Thakkar wrote:
> Use resource-managed function devm_led_classdev_register instead
> of led_classdev_register to make the error-path simpler.
>
> To be compatible with the change, goto is replaced with direct
> return and unneeded label is dropped. Also, remove redundant
> cobalt_qube_led_remove.
>
> Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
> ---
>   drivers/leds/leds-cobalt-qube.c | 20 ++------------------
>   1 file changed, 2 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c
> index d975220..59818df 100644
> --- a/drivers/leds/leds-cobalt-qube.c
> +++ b/drivers/leds/leds-cobalt-qube.c
> @@ -49,31 +49,15 @@ static int cobalt_qube_led_probe(struct platform_device *pdev)
>   	led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
>   	writeb(led_value, led_port);
>
> -	retval = led_classdev_register(&pdev->dev, &qube_front_led);
> +	retval = devm_led_classdev_register(&pdev->dev, &qube_front_led);
>   	if (retval)
> -		goto err_null;

We can spare more lines by changing this to:

return devm_led_classdev_register(&pdev->dev, &qube_front_led);

You could get rid of retval then, too.

> -
> -	return 0;
> -
> -err_null:
> -	led_port = NULL;
> -
> -	return retval;
> -}
> -
> -static int cobalt_qube_led_remove(struct platform_device *pdev)
> -{
> -	led_classdev_unregister(&qube_front_led);
> -
> -	if (led_port)
> -		led_port = NULL;
> +		return retval;
>
>   	return 0;
>   }
>
>   static struct platform_driver cobalt_qube_led_driver = {
>   	.probe	= cobalt_qube_led_probe,
> -	.remove	= cobalt_qube_led_remove,
>   	.driver	= {
>   		.name	= "cobalt-qube-leds",
>   	},
>


-- 
Best Regards,
Jacek Anaszewski
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[toc] | [prev] | [next] | [standalone]

#1215216

On Thu, Aug 27, 2015 at 12:56 PM, Jacek Anaszewski
<j.anaszewski@samsung.com> wrote:
> Hi Vaishali,
>
> Thanks for the patch.
>
> On 08/27/2015 07:13 AM, Vaishali Thakkar wrote:
>>
>> Use resource-managed function devm_led_classdev_register instead
>> of led_classdev_register to make the error-path simpler.
>>
>> To be compatible with the change, goto is replaced with direct
>> return and unneeded label is dropped. Also, remove redundant
>> cobalt_qube_led_remove.
>>
>> Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
>> ---
>>   drivers/leds/leds-cobalt-qube.c | 20 ++------------------
>>   1 file changed, 2 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/leds/leds-cobalt-qube.c
>> b/drivers/leds/leds-cobalt-qube.c
>> index d975220..59818df 100644
>> --- a/drivers/leds/leds-cobalt-qube.c
>> +++ b/drivers/leds/leds-cobalt-qube.c
>> @@ -49,31 +49,15 @@ static int cobalt_qube_led_probe(struct
>> platform_device *pdev)
>>         led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
>>         writeb(led_value, led_port);
>>
>> -       retval = led_classdev_register(&pdev->dev, &qube_front_led);
>> +       retval = devm_led_classdev_register(&pdev->dev, &qube_front_led);
>>         if (retval)
>> -               goto err_null;
>
>
> We can spare more lines by changing this to:
>
> return devm_led_classdev_register(&pdev->dev, &qube_front_led);
>
> You could get rid of retval then, too.

Sure. This makes sense. I will send v2 with the change.

Thanks.

>> -
>> -       return 0;
>> -
>> -err_null:
>> -       led_port = NULL;
>> -
>> -       return retval;
>> -}
>> -
>> -static int cobalt_qube_led_remove(struct platform_device *pdev)
>> -{
>> -       led_classdev_unregister(&qube_front_led);
>> -
>> -       if (led_port)
>> -               led_port = NULL;
>> +               return retval;
>>
>>         return 0;
>>   }
>>
>>   static struct platform_driver cobalt_qube_led_driver = {
>>         .probe  = cobalt_qube_led_probe,
>> -       .remove = cobalt_qube_led_remove,
>>         .driver = {
>>                 .name   = "cobalt-qube-leds",
>>         },
>>
>
>
> --
> Best Regards,
> Jacek Anaszewski



-- 
Vaishali
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web