linux-kernel - [PATCH 4.14 37/56] drm/imx: only send event on crtc disable if kept disabled

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Message-Id: <20190708150523.270391645@linuxfoundation.org>
Date:   Mon,  8 Jul 2019 17:13:29 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Robert Beckett <bob.beckett@...labora.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH 4.14 37/56] drm/imx: only send event on crtc disable if kept disabled

From: Robert Beckett <bob.beckett@...labora.com>

commit 5aeab2bfc9ffa72d3ca73416635cb3785dfc076f upstream.

The event will be sent as part of the vblank enable during the modeset
if the crtc is not being kept disabled.

Fixes: 5f2f911578fb ("drm/imx: atomic phase 3 step 1: Use atomic configuration")

Signed-off-by: Robert Beckett <bob.beckett@...labora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/imx/ipuv3-crtc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -102,7 +102,7 @@ static void ipu_crtc_atomic_disable(stru
 	drm_crtc_vblank_off(crtc);
 
 	spin_lock_irq(&crtc->dev->event_lock);
-	if (crtc->state->event) {
+	if (crtc->state->event && !crtc->state->active) {
 		drm_crtc_send_vblank_event(crtc, crtc->state->event);
 		crtc->state->event = NULL;
 	}