[PATCH] ASoC: fsl_aud2htx: mark PM functions as __maybe_unused

[Nicolin Chen]

On Thu, Dec 03, 2020 at 11:28:47PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd at arndb.de>
> 
> When CONFIG_PM is disabled, we get a warning for unused functions:
> 
> sound/soc/fsl/fsl_aud2htx.c:261:12: error: unused function 'fsl_aud2htx_runtime_suspend' [-Werror,-Wunused-function]
> static int fsl_aud2htx_runtime_suspend(struct device *dev)
> sound/soc/fsl/fsl_aud2htx.c:271:12: error: unused function 'fsl_aud2htx_runtime_resume' [-Werror,-Wunused-function]
> static int fsl_aud2htx_runtime_resume(struct device *dev)
> 
> Mark these as __maybe_unused to avoid the warning without adding
> an #ifdef.
> 
> Fixes: 8a24c834c053 ("ASoC: fsl_aud2htx: Add aud2htx module driver")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>

Acked-by: Nicolin Chen <nicoleotsuka at gmail.com>