On Wed, Aug 30, 2023 at 03:09:13PM +0200, Takashi Iwai wrote: > On Wed, 30 Aug 2023 13:29:57 +0200, > Sudip Mukherjee (Codethink) wrote: > > > > Hi All, > > > > The latest mainline kernel branch fails to build alpha, csky and s390 > > allmodconfig with the error: > > > > drivers/mfd/cs42l43.c:1138:12: error: 'cs42l43_runtime_resume' defined but not used [-Werror=unused-function] > > 1138 | static int cs42l43_runtime_resume(struct device *dev) > > | ^~~~~~~~~~~~~~~~~~~~~~ > > drivers/mfd/cs42l43.c:1124:12: error: 'cs42l43_runtime_suspend' defined but not used [-Werror=unused-function] > > 1124 | static int cs42l43_runtime_suspend(struct device *dev) > > | ^~~~~~~~~~~~~~~~~~~~~~~ > > drivers/mfd/cs42l43.c:1106:12: error: 'cs42l43_resume' defined but not used [-Werror=unused-function] > > 1106 | static int cs42l43_resume(struct device *dev) > > | ^~~~~~~~~~~~~~ > > drivers/mfd/cs42l43.c:1076:12: error: 'cs42l43_suspend' defined but not used [-Werror=unused-function] > > 1076 | static int cs42l43_suspend(struct device *dev) > > | ^~~~~~~~~~~~~~~ > > > > git bisect pointed to ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver") > > > > I will be happy to test any patch or provide any extra log if needed. > > Adding __maybe_unused for those PM functions should work around it, > something like below. Could you check it? > If it's confirmed to work, I'll submit properly. > > This is probably the correct fix: https://lore.kernel.org/lkml/20230822114914.340359-1-ckeepax@xxxxxxxxxxxxxxxxxxxxx/ Just waiting on it to be reviewed. Thanks, Charles