drm/radeon/kms: don't enable underscan with interlaced modes

They aren't compatible.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 8c987c9923ed1a8b8dddbd2de867afcc46e571de..127a395f70fb304d6f4d0df613de1fdfc8ca1223 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1151,6 +1151,7 @@ bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
 
                        /* fix up for overscan on hdmi */
                        if (ASIC_IS_AVIVO(rdev) &&
+                           (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
                            ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
                             ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
                              drm_detect_hdmi_monitor(radeon_connector->edid) &&