linux-kernel - Re: [PATCH]backlight: lm3639: fix coccinelle warning.

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Message-Id: <20121108122724.d602a134.akpm@linux-foundation.org>
Date:	Thu, 8 Nov 2012 12:27:24 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"G.Shark Jeong" <gshark.jeong@...il.com>
Cc:	Richard Purdie <rpurdie@...ys.net>,
	Daniel Jeong <daniel.jeong@...com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH]backlight: lm3639: fix coccinelle warning.

On Thu,  8 Nov 2012 15:44:49 +0900
"G.Shark Jeong" <gshark.jeong@...il.com> wrote:

> From: "G.Shark Jeong" <gshark.jeong@...il.com>
> 
> Fix coccinelle warning.

Please always quote the warning or error message text in the changelog
when fixing an error or warning.

> diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c
> index 585949b..868a9da 100644
> --- a/drivers/video/backlight/lm3639_bl.c
> +++ b/drivers/video/backlight/lm3639_bl.c
> @@ -403,9 +403,9 @@ static int __devexit lm3639_remove(struct i2c_client *client)
>  
>  	regmap_write(pchip->regmap, REG_ENABLE, 0x00);
>  
> -	if (&pchip->cdev_torch)
> +	if ((&pchip->cdev_torch)!=NULL)
>  		led_classdev_unregister(&pchip->cdev_torch);
> -	if (&pchip->cdev_flash)
> +	if ((&pchip->cdev_flash)!=NULL)

Please use scripts/checkpatch.pl.



This code is just pointless.  The expression "&anything" will never
evaluate to NULL.

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