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drm/msm/mdp4: flush vblank event on disable

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[ Upstream commit c6721b3c6423d8a348ae885a0f4c85e14f9bf85c ]

Flush queued events when disabling the crtc. This avoids timeouts when
we come back and wait for dependencies (like the previous frame's
flip_done).

Fixes: c8afe684c9 ("drm/msm: basic KMS driver for snapdragon")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/569127/
Link: https://lore.kernel.org/r/20231127215401.4064128-1-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Baryshkov 2023-11-28 00:54:01 +03:00 committed by Greg Kroah-Hartman
parent 982eb772e1
commit b234ecad20
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/msm/disp/mdp4/mdp4_crtc.c
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@ -269,6 +269,7 @@ static void mdp4_crtc_atomic_disable(struct drm_crtc *crtc,
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct mdp4_kms *mdp4_kms = get_kms(crtc);
unsigned long flags;
DBG("%s", mdp4_crtc->name);
@ -281,6 +282,14 @@ static void mdp4_crtc_atomic_disable(struct drm_crtc *crtc,
mdp_irq_unregister(&mdp4_kms->base, &mdp4_crtc->err);
mdp4_disable(mdp4_kms);
if (crtc->state->event && !crtc->state->active) {
WARN_ON(mdp4_crtc->event);
spin_lock_irqsave(&mdp4_kms->dev->event_lock, flags);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
crtc->state->event = NULL;
spin_unlock_irqrestore(&mdp4_kms->dev->event_lock, flags);
}
mdp4_crtc->enabled = false;
}