[PATCH] OMAP: DSS2: Fix error path in omap_dsi_update()

[Archit Taneja <archit@ti.com>]

In the case of an error on calling dsi_update_screen_l4(), a
successful framedone callback is still sent to panel-taal. An
error should be returned to taal_update() instead.

Signed-off-by: Archit Taneja <archit@ti.com>
---
 drivers/video/omap2/dss/dsi.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index a6e0f64..7570a53
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -2901,6 +2901,7 @@ int omap_dsi_update(struct omap_dss_device *dssdev,
 		void (*callback)(int, void *), void *data)
 {
 	dsi.update_channel = channel;
+	int r;
 
 	/* OMAP DSS cannot send updates of odd widths.
 	 * omap_dsi_prepare_update() makes the widths even, but add a BUG_ON
@@ -2920,7 +2921,10 @@ int omap_dsi_update(struct omap_dss_device *dssdev,
 
 		dsi_update_screen_dispc(dssdev, x, y, w, h);
 	} else {
-		dsi_update_screen_l4(dssdev, x, y, w, h);
+		r = dsi_update_screen_l4(dssdev, x, y, w, h);
+		if (r)
+			return r;
+
 		dsi_perf_show("L4");
 		callback(0, data);
 	}
-- 
1.5.4.7