mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-01 23:04:54 +01:00
Wayne Lin
3c6a743c69
[Why] drm_dp_mst_topology_queue_probe() is used under the assumption that mst is already initialized. If we connect system with SST first then switch to the mst branch during suspend, we will fail probing topology by calling the wrong API since the mst manager is yet to be initialized. [How] At dm_resume(), once it's detected as mst branc connected, check if the mst is initialized already. If not, call dm_helpers_dp_mst_start_top_mgr() instead to initialize mst V2: Adjust the commit msg a bit Fixes:bc068194f5("drm/amd/display: Don't write DP_MSTM_CTRL after LT") Cc: Fangzhi Zuo <[email protected]> Cc: Mario Limonciello <[email protected]> Cc: Alex Deucher <[email protected]> Reviewed-by: Tom Chung <[email protected]> Signed-off-by: Wayne Lin <[email protected]> Signed-off-by: Alex Deucher <[email protected]> (cherry picked from commit62320fb8d9) Cc: [email protected]