Re: [PATCH] backlight: add CONFIG_PM_SLEEP to suspend/resume functions

From: Shuah Khan
Date: Mon Jun 10 2013 - 11:34:40 EST

On 06/07/2013 04:25 AM, Arnd Bergmann wrote:
> On Friday 07 June 2013 10:39:20 Jingoo Han wrote:
>> Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following
>> build warning when CONFIG_PM_SLEEP is not selected. This is because
>> sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when
>> the CONFIG_PM_SLEEP is enabled.
>> drivers/video/backlight/backlight.c:211:12: warning: 'backlight_suspend' defined but not used [-Wunused-function]
>> drivers/video/backlight/backlight.c:225:12: warning: 'backlight_resume' defined but not used [-Wunused-function]
>> Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
> I forgot:
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>

Jingoo Han, and Arnd,

Sorry I was on vacation all of last week. Thanks for fixing the problem.
My apologies for introducing the warnings. I had CONFIG_PM and
CONFIG_PM_SLEEP both enabled and didn't see this warning. I will be
careful with subsequent patches in this area.

-- Shuah

Shuah Khan, Linux Kernel Developer - Open Source Group Samsung Research
America (Silicon Valley) | (970) 672-0658
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