Hi Eric,
i tried to build Linux next-20160104, but vc4 failed with the following messages:
... CC drivers/gpu/drm/vc4/vc4_v3d.o drivers/gpu/drm/vc4/vc4_v3d.c: In function 'vc4_v3d_set_power': drivers/gpu/drm/vc4/vc4_v3d.c:157:29: error: called object '0u' is not a function drivers/gpu/drm/vc4/vc4_v3d.c:159:27: error: called object '0u' is not a function drivers/gpu/drm/vc4/vc4_v3d.c:160:1: warning: control reaches end of non-void function [-Wreturn-type] make[4]: *** [drivers/gpu/drm/vc4/vc4_v3d.o] Error 1 make[3]: *** [drivers/gpu/drm/vc4] Error 2 make[2]: *** [drivers/gpu/drm] Error 2 make[1]: *** [drivers/gpu] Error 2 make: *** [drivers] Error 2
Here the relevant settings:
CONFIG_DRM_VC4=y CONFIG_PM_SLEEP=n
It looks like pm_generic_poweroff and pm_generic_resume aren't used as intended. They could be NULL.
Regards Stefan