6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> commit 32e39bab59934bfd3f37097d4dd85ac5eb0fd549 upstream. If we have no VBT, or the VBT didn't declare the encoder in question, we won't have the 'devdata' for the encoder. Instead of oopsing just bail early. We won't be able to tell whether the port is DP++ or not, but so be it. Cc: stable@xxxxxxxxxxxxxxx Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10464 Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20240319092443.15769-1-ville.syrjala@xxxxxxxxxxxxxxx Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx> (cherry picked from commit 26410896206342c8a80d2b027923e9ee7d33b733) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_bios.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -3313,6 +3313,9 @@ bool intel_bios_encoder_supports_dp_dual { const struct child_device_config *child = &devdata->child; + if (!devdata) + return false; + if (!intel_bios_encoder_supports_dp(devdata) || !intel_bios_encoder_supports_hdmi(devdata)) return false;
