drm/amd/display: Fix active dongle hotplug

Clean fake sink flag after detecting link on downstream port.
Fixing display light-up after  "hot-unplug&plug again" downstream
of an active dongle.

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 862835dc054e..bf7c378818fc 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1037,6 +1037,10 @@ static void handle_hpd_rx_irq(void *param)
                         !is_mst_root_connector) {
                 /* Downstream Port status changed. */
                 if (dc_link_detect(dc_link, DETECT_REASON_HPDRX)) {
+
+                        if (aconnector->fake_enable)
+                                aconnector->fake_enable = false;
+
                         amdgpu_dm_update_connector_after_detect(aconnector);