Sparse reports below warnings. rt5616.c:1270:24: warning: symbol 'rt5616_aif_dai_ops' was not declared. Should it be static? rt5616.c:1277:27: warning: symbol 'rt5616_dai' was not declared. Should it be static? These two symbols are just used inner the file, thus it's better to add static qualifier. This commit adds it. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Mark Brown <broonie@kernel.org>