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drm/msm/dpu: unwind async commit handling

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It attempted to avoid fps drops in the presence of cursor updates.  But
it is racing, and can result in hw updates after flush before vblank,
which leads to underruns.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Rob Clark
2019-08-29 09:45:09 -07:00
parent 0c91ed5112
commit b4bb9f15b4
6 changed files with 38 additions and 58 deletions
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3
drivers/gpu/drm/msm/msm_atomic.c
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@@ -67,8 +67,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
kms->funcs->commit(kms, state);
}
if (!state->legacy_cursor_update)
msm_atomic_wait_for_commit_done(dev, state);
msm_atomic_wait_for_commit_done(dev, state);
kms->funcs->complete_commit(kms, state);