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

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They aren't compatible.

Signed-off-by: Alex Deucher <alexdeucher@xxxxxxxxx>
---
 drivers/gpu/drm/radeon/radeon_display.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 8c987c9..127a395 100644
--- 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) &&
-- 
1.7.1.1

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