The DP sink's capabilities, like DSC, may depend on the source OUI written to the sink. On eDP this OUI value could have been reset before the detection started if the panel power on it got disabled. Make sure the OUI is re-written at the beginning of detection in this case, before the sink capabilities are read out.
Signed-off-by: Imre Deak <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 520cc6f50a126..063fe92d43786 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5669,6 +5669,8 @@ intel_dp_detect(struct drm_connector *connector, goto out_unset_edid; } + intel_dp_init_source_oui(intel_dp); + ret = intel_dp_tunnel_detect(intel_dp, ctx); if (ret == -EDEADLK) { status = ret; -- 2.44.2
