linux-kernel - [PATCH] drm/edid: fixed the bug that hdr metadata was not cleared

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Message-ID: <20250416093607epcms5p344bcffd7430fe5e30ef9b73db73f7388@epcms5p3>
Date: Wed, 16 Apr 2025 18:36:07 +0900
From: 李飞娟 <feijuan.li@...sung.com>
To: "jingoohan1@...il.com" <jingoohan1@...il.com>,
	"maarten.lankhorst@...ux.intel.com" <maarten.lankhorst@...ux.intel.com>,
	"mripard@...nel.org" <mripard@...nel.org>, "tzimmermann@...e.de"
	<tzimmermann@...e.de>, "airlied@...il.com" <airlied@...il.com>,
	"simona@...ll.ch" <simona@...ll.ch>, "dri-devel@...ts.freedesktop.org"
	<dri-devel@...ts.freedesktop.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
CC: 唐红飞 <hongfei.tang@...sung.com>,
	严明贵 <minggui.yan@...sung.com>
Subject: [PATCH] drm/edid: fixed the bug that hdr metadata was not cleared

>From a34a1e2dd7aacd45f18775564fce12b03ae4009c Mon Sep 17 00:00:00 2001
From: "feijuan.li" <feijuan.li@...sung.com>
Date: Wed, 16 Apr 2025 11:07:39 +0000
Subject: [PATCH] drm/edid: fixed the bug that hdr metadata was not cleared

When DP connected to a device with HDR capability,
the hdr structure was filled.Then connected to another
sink device without hdr capability, but the hdr info
still exist.

Signed-off-by: feijuan.li <feijuan.li@...sung.com>
---
 drivers/gpu/drm/drm_edid.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 13bc4c290b17..5cf5d30321b6 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5607,6 +5607,7 @@ static void clear_eld(struct drm_connector *connector)
 {
 	mutex_lock(&connector->eld_mutex);
 	memset(connector->eld, 0, sizeof(connector->eld));
+	memset(&connector->hdr_sink_metadata, 0, sizeof(connector->hdr_sink_metadata));
 	mutex_unlock(&connector->eld_mutex);
 
 	connector->latency_present[0] = false;
-- 
2.25.1