drm/nouveau: Don't pick an interlaced mode as the panel native mode.

Rescaling interlaced modes isn't going to work correctly, and even if
it did, come on, interlaced flat panels? are you pulling my leg?

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 50704287a8c2..7f749d281df9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -506,7 +506,8 @@ nouveau_connector_native_mode(struct drm_connector *connector)
         int high_w = 0, high_h = 0, high_v = 0;
 
         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
-                if (helper->mode_valid(connector, mode) != MODE_OK)
+                if (helper->mode_valid(connector, mode) != MODE_OK ||
+                    (mode->flags & DRM_MODE_FLAG_INTERLACE))
                         continue;
 
                 /* Use preferred mode if there is one.. */