1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 0820986d4a68..32ec2ff2e9cf 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -940,6 +940,22 @@ static int configure_dispc(void)
         return r;
 }
 
+/* Make the coordinates even. There are some strange problems with OMAP and
+ * partial DSI update when the update widths are odd. */
+static void make_even(u16 *x, u16 *w)
+{
+        u16 x1, x2;
+
+        x1 = *x;
+        x2 = *x + *w;
+
+        x1 &= ~1;
+        x2 = ALIGN(x2, 2);
+
+        *x = x1;
+        *w = x2 - x1;
+}
+
 /* Configure dispc for partial update. Return possibly modified update
  * area */
 void dss_setup_partial_planes(struct omap_dss_device *dssdev,
@@ -968,6 +984,8 @@ void dss_setup_partial_planes(struct omap_dss_device *dssdev,
                 return;
         }
 
+        make_even(&x, &w);
+
         spin_lock_irqsave(&dss_cache.lock, flags);
 
         /* We need to show the whole overlay if it is scaled. So look for
@@ -1029,6 +1047,8 @@ void dss_setup_partial_planes(struct omap_dss_device *dssdev,
                 w = x2 - x1;
                 h = y2 - y1;
 
+                make_even(&x, &w);
+
                 DSSDBG("changing upd area due to ovl(%d) scaling %d,%d %dx%d\n",
                                 i, x, y, w, h);
         }