[PATCH] drm: fix the addition of the side-by-side (half) flag for extra 3D modes

[Thomas Wood]

Ensure the side-by-side (half) flag is added to any existing flags when
adding modes from 3D_Structure_ALL.

Signed-off-by: Thomas Wood <thomas.wood at intel.com>
---
 drivers/gpu/drm/drm_edid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index fb7cf0e..52e060e 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -2701,7 +2701,7 @@ static int add_3d_struct_modes(struct drm_connector 
*connector, u16 structure,
        if (structure & (1 << 8)) {
                newmode = drm_mode_duplicate(dev, &edid_cea_modes[cea_mode]);
                if (newmode) {
-                       newmode->flags = DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF;
+                       newmode->flags |= DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF;
                        drm_mode_probed_add(connector, newmode);
                        modes++;
                }
-- 
1.8.4.2