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drm/amd/display: Use memset to initialize variables in amdgpu_dm_atomic_commit_tail 

Clang warns:

drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:5089:60:
warning: suggest braces around initialization of subobject
[-Wmissing-braces]
                struct dc_surface_update dummy_updates[MAX_SURFACES] = { 0 };
                                                                         ^
                                                                         {}

Previous efforts to fix this type of warning by adding or removing
braces have been met with some pushback in favor of using memset [1][2].
Do that here, mirroring commit 05794eff1a ("drm/amdgpu/gmc: fix
compiler errors [-Werror,-Wmissing-braces] (V2)") in this tree.

[1]: https://lore.kernel.org/lkml/022e41c0-8465-dc7a-a45c-64187ecd9684@amd.com/
[2]: https://lore.kernel.org/lkml/20181128.215241.702406654469517539.davem@davemloft.net/

Fixes: 02d6a6fcdf ("drm/amd/display: Simplify underscan and ABM commit")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nathan Chancellor 2019-02-01 13:14:28 -07:00 committed by Alex Deucher
parent d6d36b55a0
commit 19afd79951
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -5094,10 +5094,13 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state); struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
struct dm_connector_state *dm_old_con_state = to_dm_connector_state(old_con_state); struct dm_connector_state *dm_old_con_state = to_dm_connector_state(old_con_state);
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc); struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
struct dc_surface_update dummy_updates[MAX_SURFACES] = { 0 }; struct dc_surface_update dummy_updates[MAX_SURFACES];
struct dc_stream_update stream_update = { 0 }; struct dc_stream_update stream_update;
struct dc_stream_status *status = NULL; struct dc_stream_status *status = NULL;
memset(&dummy_updates, 0, sizeof(dummy_updates));
memset(&stream_update, 0, sizeof(stream_update));
if (acrtc) { if (acrtc) {
new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base); new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base); old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base);