Subject: [PATCH] fbdev: auo_k190x: avoid unused function warnings

From: [email-masked] (Tomi Valkeinen)
Date: Mon, 7 Dec 2015 18:10:04 +0200

On 20/11/15 23:47, Arnd Bergmann wrote:
> The auo_k190x framebuffer driver encloses the power-management
> functions in #ifdef CONFIG_PM, but the auok190x_suspend/resume
> functions are only really used when CONFIG_PM_SLEEP is also
> set, as a frequent gcc warning shows:
> 
> drivers/video/fbdev/auo_k190x.c:859:12: warning: 'auok190x_suspend' defined but not used
> drivers/video/fbdev/auo_k190x.c:899:12: warning: 'auok190x_resume' defined but not used
> 
> This changes the driver to remove the #ifdef and instead mark
> the functions as __maybe_unused, which is a nicer anyway, as it
> provides build testing for all the code in all configurations
> and is harder to get wrong.

Applied for 4.5.

Btw, do you know if the linker will optimize the __maybe_unused funcs
away if they are not used? I presume so.

 Tomi

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