When MST becomes active, the initial HPD plug notification updates the SST connector state to connected.
However, the subsequent SST connector detect path reports disconnected while MST is enabled. This connected -> disconnected transition is then observed by the polling logic and may result in an unnecessary hotplug event. Set the SST connector state to disconnected immediately after MST is initialized so that the detect path does not introduce a transient state change. Signed-off-by: Yongxing Mou <[email protected]> --- drivers/gpu/drm/msm/dp/dp_display.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 4ee391cc7165..f8ca60d6d714 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -352,8 +352,10 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) if (dp->max_stream > 1 && drm_dp_read_mst_cap(dp->aux, dp->panel->dpcd)) msm_dp_display_mst_init(dp); - if (dp->msm_dp_display.mst_active) + if (dp->msm_dp_display.mst_active) { + connector->status = connector_status_disconnected; msm_dp_mst_display_set_mgr_state(&dp->msm_dp_display, true); + } msm_dp_link_reset_phy_params_vx_px(dp->link); -- 2.43.0
