Commit 3f9ffce5765d ("drm/i915: Do panel VBT init early if the VBT
declares an explicit panel type") started using -1 as the value for
unset panel_type. It gets initialized in intel_panel_init_alloc(), but
the SDVO code never calls it.

Call intel_panel_init_alloc() to initialize the panel, including the
panel_type.

Reported-by: Tomi Leppänen <t...@tomin.site>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8896
Fixes: 3f9ffce5765d ("drm/i915: Do panel VBT init early if the VBT declares an 
explicit panel type")
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: <sta...@vger.kernel.org> # v6.1+
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_sdvo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c 
b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 8298a86d1334..b4faf97936b9 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2752,7 +2752,7 @@ static struct intel_sdvo_connector 
*intel_sdvo_connector_alloc(void)
        __drm_atomic_helper_connector_reset(&sdvo_connector->base.base,
                                            &conn_state->base.base);
 
-       INIT_LIST_HEAD(&sdvo_connector->base.panel.fixed_modes);
+       intel_panel_init_alloc(&sdvo_connector->base);
 
        return sdvo_connector;
 }
-- 
2.39.2

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