drm/amd/display: defer modeset check in dm_update_planes_state
authorShirish S <shirish.s@amd.com>
Fri, 16 Feb 2018 06:14:22 +0000 (11:44 +0530)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 7 Mar 2018 21:27:01 +0000 (16:27 -0500)
commit843e3c7df6bdd68cb0551875023236cbfe8c4c9d
tree879423ecfdd4c9d83469363eb07ff7739a5fc9da
parent3573d598b800f4979c78b829af3280af3d412ea3
drm/amd/display: defer modeset check in dm_update_planes_state

amdgpu_dm_atomic_check() is used to validate the entire configuration of
planes and crtc's that the user space wants to commit.

However amdgpu_dm_atomic_check() depends upon DRM_MODE_ATOMIC_ALLOW_MODESET
flag else its mostly dummy.
Its not mandatory for the user space to set DRM_MODE_ATOMIC_ALLOW_MODESET,
and in general its not set either along with DRM_MODE_ATOMIC_TEST_ONLY.

Considering its importantance, this patch defers the allow_modeset check
in dm_update_planes_state(), so that there shall be scope to validate
the configuration sent from user space, without impacting the population
of dc/dm related data structures.

Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c