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drm/amd/display: Fix crc_src is not thread safe

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[Why & How]
Find out that referring to crtc_state->crc_src is not thread safe.
Move crc_src from dm_crtc_state to dm_irq_params to fix this.

Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wayne Lin
2021-02-09 16:52:22 +08:00
committed by Alex Deucher
parent e49db37634
commit 8e7b6fee9b
4 changed files with 37 additions and 9 deletions
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11
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -5510,7 +5510,6 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc)
state->abm_level = cur->abm_level;
state->vrr_supported = cur->vrr_supported;
state->freesync_config = cur->freesync_config;
state->crc_src = cur->crc_src;
state->cm_has_degamma = cur->cm_has_degamma;
state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb;
@@ -8650,6 +8649,9 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
*/
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
#ifdef CONFIG_DEBUG_FS
enum amdgpu_dm_pipe_crc_source cur_crc_src;
#endif
dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
@@ -8666,11 +8668,14 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
* settings for the stream.
*/
dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
spin_lock_irqsave(&adev_to_drm(adev)->event_lock, flags);
cur_crc_src = acrtc->dm_irq_params.crc_src;
spin_unlock_irqrestore(&adev_to_drm(adev)->event_lock, flags);
if (amdgpu_dm_is_valid_crc_source(dm_new_crtc_state->crc_src)) {
if (amdgpu_dm_is_valid_crc_source(cur_crc_src)) {
amdgpu_dm_crtc_configure_crc_source(
crtc, dm_new_crtc_state,
dm_new_crtc_state->crc_src);
cur_crc_src);
}
#endif
}