drm/amd/display: No display after resume from WB/CB
[why] First MST sideband message returns AUX_RET_ERROR_HPD_DISCON on certain intel platform. Aux transaction considered failure if HPD unexpected pulled low. The actual aux transaction success in such case, hence do not return error. [how] Not returning error when AUX_RET_ERROR_HPD_DISCON detected on the first sideband message. v2: squash in fix (Alex) Reviewed-by:Jerry Zuo <Jerry.Zuo@amd.com> Acked-by:
Brian Chang <Brian.Chang@amd.com> Signed-off-by:
Tsung-hua Lin <Tsung-hua.Lin@amd.com> Tested-by:
Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
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