From: Gabe Teeger <[email protected]> [why] Hotplugging with a DVI-DP dongle on pre-rdna embedded platform working about half the time. The regression was found to be the setting of link->type here. [what] Reverts feb0593 besides the logging added.
Reviewed-by: Wenjing Liu <[email protected]> Signed-off-by: Jerry Zuo <[email protected]> Signed-off-by: Gabe Teeger <[email protected]> --- drivers/gpu/drm/amd/display/dc/link/link_detection.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index bba644024780..391dbe81534d 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -863,7 +863,6 @@ static bool detect_link_and_local_sink(struct dc_link *link, struct dc_sink *prev_sink = NULL; struct dpcd_caps prev_dpcd_caps; enum dc_connection_type new_connection_type = dc_connection_none; - enum dc_connection_type pre_connection_type = link->type; const uint32_t post_oui_delay = 30; // 30ms DC_LOGGER_INIT(link->ctx->logger); @@ -965,7 +964,6 @@ static bool detect_link_and_local_sink(struct dc_link *link, } if (!detect_dp(link, &sink_caps, reason)) { - link->type = pre_connection_type; if (prev_sink) dc_sink_release(prev_sink); @@ -1299,8 +1297,7 @@ bool link_detect(struct dc_link *link, enum dc_detect_reason reason) link->dpcd_caps.is_mst_capable) is_delegated_to_mst_top_mgr = discover_dp_mst_topology(link, reason); - if (is_local_sink_detect_success && - pre_link_type == dc_connection_mst_branch && + if (pre_link_type == dc_connection_mst_branch && link->type != dc_connection_mst_branch) is_delegated_to_mst_top_mgr = link_reset_cur_dp_mst_topology(link); -- 2.34.1
