FAILED: patch "[PATCH] drm/i915/sdvo: Grab mode_config.mutex during LVDS init to" failed to apply to 6.0-stable tree

The patch below does not apply to the 6.0-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Possible dependencies:

12caf46cf4fc ("drm/i915/sdvo: Grab mode_config.mutex during LVDS init to avoid WARNs") d372ec94a018 ("drm/i915: Simplify intel_panel_add_edid_alt_fixed_modes()") a5810f551d0a ("drm/i915: Allow more varied alternate fixed modes for panels")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 12caf46cf4fc92b1c3884cb363ace2e12732fd2f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <[email protected]>
Date: Wed, 26 Oct 2022 13:11:29 +0300
Subject: [PATCH] drm/i915/sdvo: Grab mode_config.mutex during LVDS init to
avoid WARNs
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

drm_mode_probed_add() is unhappy about being called w/o mode_config.mutex. Grab it during LVDS fixed mode setup to silence the WARNs.

index 8ee7b05ab733..774c1dc31a52 100644
@@ -2900,8 +2900,12 @@ intel_sdvo_lvds_init(struct intel_sdvo *intel_sdvo, int device)
 	intel_panel_add_vbt_sdvo_fixed_mode(intel_connector);
 
 	if (!intel_panel_preferred_fixed_mode(intel_connector)) {
+		mutex_lock(&i915->drm.mode_config.mutex);
+
 		intel_ddc_get_modes(connector, &intel_sdvo->ddc);
 		intel_panel_add_edid_fixed_modes(intel_connector, false);
+
+		mutex_unlock(&i915->drm.mode_config.mutex);
 	}
 
 	intel_panel_init(intel_connector);