If during VBT parsing we find that the port is unused, the driver code just bails out without clearing the defaults for that port. This can cause failures down the path through link training for unused Port. This patch fixes this issue by clearing the defaults before bailing out from the VBT parsing function.
Cc: Ville Syrjala <[email protected]> Signed-off-by: Manasi Navare <[email protected]> --- drivers/gpu/drm/i915/intel_bios.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index e144f03..3ac3d24 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -1148,9 +1148,15 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, } } } - if (!child) - return; + if (!child) { + /* Clear the DDI VBT Port info values */ + info->supports_dvi = 0; + info->supports_hdmi = 0; + info->supports_dp = 0; + info->supports_edp = 0; + return; + } aux_channel = child->common.aux_channel; ddc_pin = child->common.ddc_pin; -- 2.1.4 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
