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drm/msm: Grab a vblank reference when waiting for commit_done

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[ Upstream commit 3b712e43e3876b42b38321ecf790a1f5fe59c834 ]

Similar to the atomic helpers, we should enable vblank while we're
waiting for the commit to finish. DPU needs this, MDP5 seems to work
fine without it.

Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sean Paul 2018-10-03 16:22:31 -04:00 committed by Greg Kroah-Hartman
parent 81710cedad
commit 5094dea5ac
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/msm/msm_atomic.c
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@ -93,7 +93,12 @@ static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
if (!new_crtc_state->active)
continue;
if (drm_crtc_vblank_get(crtc))
continue;
kms->funcs->wait_for_crtc_commit_done(kms, crtc);
drm_crtc_vblank_put(crtc);
}
}