Filter out all modes with clock higher than 165 MHz for DVI connector in
drm/udl driver.

Signed-off-by: Robert Tarasov <[email protected]>
---
 drivers/gpu/drm/udl/udl_connector.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/udl/udl_connector.c 
b/drivers/gpu/drm/udl/udl_connector.c
index 68b221b9a01f..3b9be500b9ae 100644
--- a/drivers/gpu/drm/udl/udl_connector.c
+++ b/drivers/gpu/drm/udl/udl_connector.c
@@ -109,6 +109,14 @@ static int udl_mode_valid(struct drm_connector *connector,
                          struct drm_display_mode *mode)
 {
        struct udl_device *udl = connector->dev->dev_private;
+       int con_type = connector->connector_type;
+
+       if ((con_type == DRM_MODE_CONNECTOR_DVII ||
+            con_type == DRM_MODE_CONNECTOR_DVID ||
+            con_type == DRM_MODE_CONNECTOR_DVIA) &&
+           mode->clock > 165000)
+               return MODE_CLOCK_HIGH;
+
        if (!udl->sku_pixel_limit)
                return 0;
 
-- 
2.21.0.360.g471c308f928-goog

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