[PATCH 2/4] Add missing check

[Werner Sembach]

Add a missing check that could potentially lead to an unarchivable mode being
validated.

Signed-off-by: Werner Sembach <wse at tuxedocomputers.com>
---

>From 54fa706f0a5f260a32af5d18b9622ceebb94c12e Mon Sep 17 00:00:00 2001
From: Werner Sembach <wse at tuxedocomputers.com>
Date: Mon, 3 May 2021 14:42:36 +0200
Subject: [PATCH 2/4] Add missing check

---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 576d3d910d06..ce165ef28e88 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1913,7 +1913,7 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
 		clock *= 2;
 	}
 
-	if (drm_mode_is_420_only(&connector->display_info, mode))
+	if (connector->ycbcr_420_allowed && drm_mode_is_420_only(&connector->display_info, mode))
 		clock /= 2;
 
 	status = intel_hdmi_mode_clock_valid(hdmi, clock, has_hdmi_sink);
-- 
2.25.1