Re: [PATCH 2/2] [media] vcodec: mediatek: mark pm functions as __maybe_unused

[Rick Chang]

On Mon, 2017-03-20 at 10:47 +0100, Arnd Bergmann wrote:
> When CONFIG_PM is disabled, we get a couple of unused functions:
> 
> drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c:927:13: error: 'mtk_jpeg_clk_off' defined but not used [-Werror=unused-function]
>  static void mtk_jpeg_clk_off(struct mtk_jpeg_dev *jpeg)
>              ^~~~~~~~~~~~~~~~
> drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c:916:13: error: 'mtk_jpeg_clk_on' defined but not used [-Werror=unused-function]
>  static void mtk_jpeg_clk_on(struct mtk_jpeg_dev *jpeg)
> 
> Rather than adding more error-prone #ifdefs around those, this patch
> removes the existing #ifdef checks and marks the PM functions as __maybe_unused
> to let gcc do the right thing.
> 
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)

Acked-by: Rick Chang <rick.chang@xxxxxxxxxxxx>