From: Jani Nikula <jani.nikula@xxxxxxxxx> commit 2002eb6d3ea954dde9f8a223018d5335779937d0 upstream. 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 <tomi@xxxxxxxxxx> 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.syrjala@xxxxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # v6.1+ Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx> Tested-by: Tomi Leppänen <tomi@xxxxxxxxxx> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20230803122706.838721-1-jani.nikula@xxxxxxxxx (cherry picked from commit 26e60294e8eacedc8ebb33405b2c375fd80e0900) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_sdvo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/display/intel_sdvo.c +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c @@ -2727,7 +2727,7 @@ static struct intel_sdvo_connector *inte __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; }