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drm/msm/dpu: move vblank events to complete_commit()

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We could get a vblank event racing with the current atomic commit,
resulting in sending the pageflip event to userspace early, causing
tearing.  On the other hand, complete_commit() ensures that the
pending flush is complete.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
This commit is contained in:
Rob Clark
2020-09-07 09:41:41 -07:00
parent d768e5043c
commit fd630ae9e2
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
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@@ -297,7 +297,6 @@ void dpu_crtc_vblank_callback(struct drm_crtc *crtc)
dpu_crtc->vblank_cb_time = ktime_get();
else
dpu_crtc->vblank_cb_count++;
_dpu_crtc_complete_flip(crtc);
drm_crtc_handle_vblank(crtc);
trace_dpu_crtc_vblank_cb(DRMID(crtc));
}
@@ -402,6 +401,7 @@ static void dpu_crtc_frame_event_cb(void *data, u32 event)
void dpu_crtc_complete_commit(struct drm_crtc *crtc)
{
trace_dpu_crtc_complete_commit(DRMID(crtc));
_dpu_crtc_complete_flip(crtc);
}
static void _dpu_crtc_setup_lm_bounds(struct drm_crtc *crtc,