1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 58568559711a..93fc8ab9bb31 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -370,6 +370,9 @@ intel_dp_mst_mode_valid(struct drm_connector *connector,
         int bpp = 24; /* MST uses fixed bpp */
         int max_rate, mode_rate, max_lanes, max_link_clock;
 
+        if (!intel_dp)
+                return MODE_ERROR;
+
         max_link_clock = intel_dp_max_link_rate(intel_dp);
         max_lanes = intel_dp_max_lane_count(intel_dp);