drm/display/dp_mst: Drop all ports from topology on CSNs before queueing link address work
We want to start cutting down on all of the places that we use port validation, so that ports may be removed from the topology as quickly as possible to minimize the number of errors we run into as a result of being out of sync with the current topology status. This isn't a very typical scenario and I don't think I've ever even run into it - but since the next commit is going to make some changes to payload updates depending on their hotplug status I think it's a probably good idea to take precautions. Let's do this with CSNs by moving some code around so that we only queue link address probing work at the end of handling all CSNs - allowing us to make sure we drop as many topology references as we can beforehand. Signed-off-by: Lyude Paul <lyude@redhat.com> Cc: Wayne Lin <Wayne.Lin@amd.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Fangzhi Zuo <Jerry.Zuo@amd.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sean Paul <sean@poorly.run> Acked-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-15-lyude@redhat.com
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