On Wed, Apr 03, 2019 at 02:48:11PM +0800, Yue Haibing wrote: > From: YueHaibing <yuehaibing@xxxxxxxxxx> > > When building CONFIG_DEBUG_FS is not set > gcc warn this: > > drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c: In function a6xx_show: > drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:1124:2: error: implicit declaration of function adreno_show; did you mean adreno_dump? [-Werror=implicit-function-declaration] > adreno_show(gpu, state, p); > ^~~~~~~~~~~ > > Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> > Fixes: 1707add81551 ("drm/msm/a6xx: Add a6xx gpu state") > Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx> > --- > drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c > index e686331..d327eb5 100644 > --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c > +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c > @@ -1121,7 +1121,9 @@ void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state, > if (IS_ERR_OR_NULL(state)) > return; > > +#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP) > adreno_show(gpu, state, p); > +#endif I agree that this is a problem, but I think I would prefer if we just made a stub function for adreno_show instead of doing a inline ifdef, so in adreno_gpu.c: #ifdef defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP) ... #else void adreno_show(struct msm_gpu *gpu, msm_gpu_state *state, struct drm_printer *p) { } #endif If you want, I can do a quick patch. Jordan -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project