* [PATCH AUTOSEL 4.4 05/23] drm/msm: Grab a vblank reference when waiting for commit_done
[not found] <20181213043259.76643-1-sashal@kernel.org>
@ 2018-12-13 4:32 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2018-12-13 4:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Sean Paul, Rob Clark, Sasha Levin, linux-arm-msm, dri-devel,
freedreno
From: Sean Paul <seanpaul@chromium.org>
[ 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>
---
drivers/gpu/drm/msm/msm_atomic.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index 7eb253bc24df..221eaea651d4 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -107,7 +107,12 @@ static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
if (old_state->legacy_cursor_update)
continue;
+ if (drm_crtc_vblank_get(crtc))
+ continue;
+
kms->funcs->wait_for_crtc_commit_done(kms, crtc);
+
+ drm_crtc_vblank_put(crtc);
}
}
--
2.19.1
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[not found] <20181213043259.76643-1-sashal@kernel.org>
2018-12-13 4:32 ` [PATCH AUTOSEL 4.4 05/23] drm/msm: Grab a vblank reference when waiting for commit_done Sasha Levin
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