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path: root/drivers/gpu/drm/i915/intel_dvo.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_dvo.c')
-rw-r--r--drivers/gpu/drm/i915/intel_dvo.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index a70d767313aa..61d908e0df0e 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -219,6 +219,9 @@ intel_dvo_mode_valid(struct drm_connector *connector,
int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
int target_clock = mode->clock;
+ if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return MODE_NO_DBLESCAN;
+
/* XXX: Validate clock range */
if (fixed_mode) {
@@ -254,6 +257,9 @@ static bool intel_dvo_compute_config(struct intel_encoder *encoder,
if (fixed_mode)
intel_fixed_panel_mode(fixed_mode, adjusted_mode);
+ if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return false;
+
return true;
}