From 5b3c0209e88a67a8d029ed8b6e30bca383cbdc55 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Tue, 15 Oct 2024 08:49:06 +0200
Subject: [PATCH] drm/ast: sil164: Clear EDID if no display is connected
Do not keep the obsolete EDID around after unplugging the display
from the connector.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: d20c2f846428 ("drm/ast: sil164: Transparently handle BMC support")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241015065113.11790-2-tzimmermann@suse.de
---
drivers/gpu/drm/ast/ast_sil164.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/ast/ast_sil164.c b/drivers/gpu/drm/ast/ast_sil164.c
index 496c7120e5155..c231389936bda 100644
--- a/drivers/gpu/drm/ast/ast_sil164.c
+++ b/drivers/gpu/drm/ast/ast_sil164.c
@@ -29,6 +29,8 @@ static int ast_sil164_connector_helper_get_modes(struct drm_connector *connector
if (ast_connector->physical_status == connector_status_connected) {
count = drm_connector_helper_get_modes(connector);
} else {
+ drm_edid_connector_update(connector, NULL);
+
/*
* There's no EDID data without a connected monitor. Set BMC-
* compatible modes in this case. The XGA default resolution
--
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