linux-kernel - [PATCH 06/23] drm: omapdrm: wait for pending operations before updating plane

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Date:	Tue,  8 Mar 2016 17:39:38 +0100
From:	Sebastian Reichel <sre@...nel.org>
To:	Sebastian Reichel <sre@...nel.org>,
	Tony Lindgren <tony@...mide.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Tomi Valkeinen <tomi.valkeinen@...com>
Cc:	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	David Airlie <airlied@...ux.ie>, linux-omap@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 06/23] drm: omapdrm: wait for pending operations before updating plane

Updating the plane may interrupt ongoing display
updates, so wait for any pending operations.

Signed-off-By: Sebastian Reichel <sre@...nel.org>
---
 drivers/gpu/drm/omapdrm/omap_drv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index a3ff35f5f6cd..e142a4245766 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -95,6 +95,10 @@ static void omap_atomic_complete(struct omap_atomic_state_commit *commit)
 	/* Apply the atomic update. */
 	dispc_runtime_get();
 
+	dev_dbg(dev->dev, "omap_atomic_complete");
+
+	omap_atomic_wait_for_completion(dev, old_state);
+
 	drm_atomic_helper_commit_modeset_disables(dev, old_state);
 	drm_atomic_helper_commit_planes(dev, old_state, false);
 	drm_atomic_helper_commit_modeset_enables(dev, old_state);
-- 
2.7.0