When built without CONFIG_PWM there are no references to ti_sn65dsi86_read_u16(), avoid the W=1 build warning by marking the function as __maybe_unused. __maybe_unused is used insted of a #ifdef guard as it looks slighly cleaner and it avoids issues if in the future other permutations of the config options would use the function. Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> --- Robert, I believe you pushed out the driver patch introducing this issue yesterday. Can you please add the relevant Fixes? drivers/gpu/drm/bridge/ti-sn65dsi86.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 430067a3071c..e1f43b73155b 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -215,8 +215,8 @@ static const struct regmap_config ti_sn65dsi86_regmap_config = { .cache_type = REGCACHE_NONE, }; -static int ti_sn65dsi86_read_u16(struct ti_sn65dsi86 *pdata, - unsigned int reg, u16 *val) +static int __maybe_unused ti_sn65dsi86_read_u16(struct ti_sn65dsi86 *pdata, + unsigned int reg, u16 *val) { u8 buf[2]; int ret; -- 2.33.1