[PATCH v2 1/4] drm/i915/display: Handle MST connector in intel_attached_dp

[Jouni Högander]

Connector->encoder might be null for MST connector. Take this into account
in intel_attached_dp.

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 733de5edcfdb3..000ab373c8879 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1913,7 +1913,10 @@ static inline struct intel_dp *enc_to_intel_dp(struct intel_encoder *encoder)
 
 static inline struct intel_dp *intel_attached_dp(struct intel_connector *connector)
 {
-	return enc_to_intel_dp(intel_attached_encoder(connector));
+	if (connector->mst_port)
+		return connector->mst_port;
+	else
+		return enc_to_intel_dp(intel_attached_encoder(connector));
 }
 
 static inline bool intel_encoder_is_dp(struct intel_encoder *encoder)
-- 
2.34.1