Hi,
Please include commit ("6cecdf7a161d drm/dp/mst: save vcpi with
payloads") to Stable tree.
In commit ("bb08c04dc867 drm/dp/mst: fix kernel oops when turning off
secondary monitor"), variable "mgr->payloads[i].vcpi" won't get update
without this patch.
bb08c04dc867 was backported to v3.18+, so this patch is also needed by v3.18+.
Thanks.