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path: root/drivers/gpu/drm/drm_dp_mst_topology.c
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Diffstat (limited to 'drivers/gpu/drm/drm_dp_mst_topology.c')
-rw-r--r--drivers/gpu/drm/drm_dp_mst_topology.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 27fbd79d0daf..e17fbdaf874b 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1672,13 +1672,19 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
u8 sinks[DRM_DP_MAX_SDP_STREAMS];
int i;
+ port = drm_dp_get_validated_port_ref(mgr, port);
+ if (!port)
+ return -EINVAL;
+
port_num = port->port_num;
mstb = drm_dp_get_validated_mstb_ref(mgr, port->parent);
if (!mstb) {
mstb = drm_dp_get_last_connected_port_and_mstb(mgr, port->parent, &port_num);
- if (!mstb)
+ if (!mstb) {
+ drm_dp_put_port(port);
return -EINVAL;
+ }
}
txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
@@ -1707,6 +1713,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
kfree(txmsg);
fail_put:
drm_dp_put_mst_branch_device(mstb);
+ drm_dp_put_port(port);
return ret;
}