From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Date: Tue, 8 Dec 2009 15:30:24 +0000 (+0200)
Subject: OMAP: DSS2: Fix crash when panel doesn't define enable_te()
X-Git-Tag: v3.12-rc1~11242^2~60
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7475e44246e8a7c435a7ed8fe1e94fc8898685d9;p=kernel%2Fkernel-generic.git

OMAP: DSS2: Fix crash when panel doesn't define enable_te()

DSI driver didn't check if the panel driver actually implements
enable_te().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
---

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 03f85df..e32a53c 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -2932,11 +2932,15 @@ static int dsi_set_update_mode(struct omap_dss_device *dssdev,
 
 static int dsi_set_te(struct omap_dss_device *dssdev, bool enable)
 {
-	int r;
-	r = dssdev->driver->enable_te(dssdev, enable);
-	/* XXX for some reason, DSI TE breaks if we don't wait here.
-	 * Panel bug? Needs more studying */
-	msleep(100);
+	int r = 0;
+
+	if (dssdev->driver->enable_te) {
+		r = dssdev->driver->enable_te(dssdev, enable);
+		/* XXX for some reason, DSI TE breaks if we don't wait here.
+		 * Panel bug? Needs more studying */
+		msleep(100);
+	}
+
 	return r;
 }