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From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: stable@vger.kernel.org
Subject: [PATCH 3/8] drm/i915/sdvo: Grab mode_config.mutex during LVDS init to avoid WARNs
Date: Wed, 26 Oct 2022 13:11:29 +0300	[thread overview]
Message-ID: <20221026101134.20865-4-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20221026101134.20865-1-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7301
Fixes: aa2b88074a56 ("drm/i915/sdvo: Fix multi function encoder stuff")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_sdvo.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index ccf81d616cb4..1eaaa7ec580e 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2899,8 +2899,12 @@ 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);
-- 
2.37.4


WARNING: multiple messages have this Message-ID (diff)
From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: stable@vger.kernel.org
Subject: [Intel-gfx] [PATCH 3/8] drm/i915/sdvo: Grab mode_config.mutex during LVDS init to avoid WARNs
Date: Wed, 26 Oct 2022 13:11:29 +0300	[thread overview]
Message-ID: <20221026101134.20865-4-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20221026101134.20865-1-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7301
Fixes: aa2b88074a56 ("drm/i915/sdvo: Fix multi function encoder stuff")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_sdvo.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index ccf81d616cb4..1eaaa7ec580e 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2899,8 +2899,12 @@ 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);
-- 
2.37.4


  parent reply	other threads:[~2022-10-26 10:11 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-26 10:11 [Intel-gfx] [PATCH 0/8] drm/i915/sdvo: Fix LVDS fixed mode setup and clean up output setup Ville Syrjala
2022-10-26 10:11 ` [PATCH 1/8] drm/i915/sdvo: Filter out invalid outputs more sensibly Ville Syrjala
2022-10-26 10:11   ` [Intel-gfx] " Ville Syrjala
2022-10-27 14:32   ` Jani Nikula
2022-10-26 10:11 ` [PATCH 2/8] drm/i915/sdvo: Setup DDC fully before output init Ville Syrjala
2022-10-26 10:11   ` [Intel-gfx] " Ville Syrjala
2022-10-27 14:36   ` Jani Nikula
2022-10-27 14:49     ` Ville Syrjälä
2022-10-27 14:54       ` Ville Syrjälä
2022-10-27 17:33         ` Jani Nikula
2022-10-26 10:11 ` Ville Syrjala [this message]
2022-10-26 10:11   ` [Intel-gfx] [PATCH 3/8] drm/i915/sdvo: Grab mode_config.mutex during LVDS init to avoid WARNs Ville Syrjala
2022-10-27 14:37   ` Jani Nikula
2022-10-26 10:11 ` [Intel-gfx] [PATCH 4/8] drm/i915/sdvo: Simplify output setup debugs Ville Syrjala
2022-10-27 14:38   ` Jani Nikula
2022-10-26 10:11 ` [Intel-gfx] [PATCH 5/8] drm/i915/sdvo: Don't add DDC modes for LVDS Ville Syrjala
2022-10-27 14:42   ` Jani Nikula
2022-10-26 10:11 ` [Intel-gfx] [PATCH 6/8] drm/i915/sdvo: Get rid of the output type<->device index stuff Ville Syrjala
2022-10-27 14:42   ` Jani Nikula
2022-10-26 10:11 ` [Intel-gfx] [PATCH 7/8] drm/i915/sdvo: Reduce copy-pasta in output setup Ville Syrjala
2022-10-27 14:45   ` Jani Nikula
2022-10-26 10:11 ` [Intel-gfx] [PATCH 8/8] drm/i915/sdvo: Fix debug print Ville Syrjala
2022-10-27 14:48   ` Jani Nikula
2022-10-26 11:25 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/sdvo: Fix LVDS fixed mode setup and clean up output setup Patchwork
2022-10-26 21:40 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork

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