linux-kernel - Re: [PATCH] Staging: cx25821 : fix coding style issues in cx25821-alsa.c

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Date:	Wed, 28 Apr 2010 10:26:14 -0700
From:	Joe Perches <joe@...ches.com>
To:	sai <tsg321@...il.com>
Cc:	gregkh@...e.de, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: cx25821 : fix coding style issues in
 cx25821-alsa.c

On Wed, 2010-04-28 at 22:47 +0530, sai wrote:
> This is a patch to cx25821-alsa.c file that fixes of most of the warning & errors found by checkpatch.pl tool
> Signed-off-by: sai gopal <tsg321@...il.com>
> ---
>  drivers/staging/cx25821/cx25821-alsa.c |   75 +++++++++++++++++---------------
>  1 files changed, 40 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/staging/cx25821/cx25821-alsa.c b/drivers/staging/cx25821/cx25821-alsa.c
> index 061add3..0890384 100644
> --- a/drivers/staging/cx25821/cx25821-alsa.c
> +++ b/drivers/staging/cx25821/cx25821-alsa.c
[]
> @@ -42,10 +42,10 @@
>  
>  #define AUDIO_SRAM_CHANNEL	SRAM_CH08
>  
> -#define dprintk(level,fmt, arg...)	if (debug >= level) \
> +#define dprintk(level, fmt, arg...)	if (debug >= level) \
>  	printk(KERN_INFO "%s/1: " fmt, chip->dev->name , ## arg)
>  
> -#define dprintk_core(level,fmt, arg...)	if (debug >= level) \
> +#define dprintk_core(level, fmt, arg...)	if (debug >= level) \
>  	printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name , ## arg)

These macros should really be do {macro} while (0)
so that they can be simply used in an if/else

#define dprintk(level, fmt, arg...)					\
do {									\
	if (debug >= level)						\
		printk(KERN_INFO "%s/1: " fmt, chip->dev->name, ##arg);	\
} while (0)


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