[PATCH] drm/i915/dp_mst: Fix getting display pointer in intel_dp_mst_compute_min_hblank()

[Imre Deak <imre.deak@intel.com>]

The MST intel_connector::encoder pointer is NULL if the connector hasn't
been enabled before, so it can't be used to retrieve the display
pointer. Use instead the connector pointer directly, which also
simplifies things.

Fixes: a5ebe00c2ace ("drm/i915/dp: Guarantee a minimum HBlank time")
Reported-by: Khaled Almahallawy <khaled.almahallawy@intel.com>
Cc: Arun R Murthy <arun.r.murthy@intel.com>
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index f58d56a1ea03a..1d43c2574e616 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -213,8 +213,7 @@ static void intel_dp_mst_compute_min_hblank(struct intel_crtc_state *crtc_state,
 					    struct intel_connector *connector,
 					    int bpp_x16)
 {
-	struct intel_encoder *encoder = connector->encoder;
-	struct intel_display *display = to_intel_display(encoder);
+	struct intel_display *display = to_intel_display(connector);
 	const struct drm_display_mode *adjusted_mode =
 					&crtc_state->hw.adjusted_mode;
 	int symbol_size = intel_dp_is_uhbr(crtc_state) ? 32 : 8;
-- 
2.44.2