linux-kernel - Re: [PATCH] gpio: samsung: use pr

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Date:	Tue, 11 Sep 2012 16:08:31 +1000
From:	Ryan Mallon <rmallon@...il.com>
To:	Jingoo Han <jg1.han@...sung.com>
CC:	'Grant Likely' <grant.likely@...retlab.ca>,
	'Linus Walleij' <linus.walleij@...aro.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gpio: samsung: use pr_* instead of printk

On 10/09/12 21:59, Jingoo Han wrote:
> This patch uses pr_* instead of printk.
> 
> Signed-off-by: Jingoo Han <jg1.han@...sung.com> --- 
> drivers/gpio/gpio-samsung.c |    6 +++--- 1 files changed, 3
> insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-samsung.c
> b/drivers/gpio/gpio-samsung.c index ba126cc..e38d990 100644 ---
> a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@
> -45,7 +45,7 @@ #ifndef DEBUG_GPIO #define gpio_dbg(x...) do { } while
> (0) #else -#define gpio_dbg(x...) printk(KERN_DEBUG x) +#define
> gpio_dbg(x...) pr_debug(x)

This is a functional change since pr_debug compiles away to nothing
unless DEBUG is defined, so now you need to define both DEBUG and
DEBUG_GPIO for this to print.

A better fix would be to just replace calls to gpio_dbg with pr_debug.

~Ryan
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