On Wed, 26 Oct 2022, Ville Syrjala ville.syrjala@linux.intel.com wrote:

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

Reviewed-by: Jani Nikula jani.nikula@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);