diff options
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index f17e68d85afa..f45e36f04ca9 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -3454,6 +3454,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms mgr->mst_state = mst_state; /* set the device into MST mode */ if (mst_state) { + struct drm_dp_payload reset_pay; + WARN_ON(mgr->mst_primary); /* get dpcd info */ @@ -3484,16 +3486,12 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL, DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC); - if (ret < 0) { + if (ret < 0) goto out_unlock; - } - { - struct drm_dp_payload reset_pay; - reset_pay.start_slot = 0; - reset_pay.num_slots = 0x3f; - drm_dp_dpcd_write_payload(mgr, 0, &reset_pay); - } + reset_pay.start_slot = 0; + reset_pay.num_slots = 0x3f; + drm_dp_dpcd_write_payload(mgr, 0, &reset_pay); queue_work(system_long_wq, &mgr->work); |