The names for these functions are rather confusing. drm_dp_add_port() sounds like a function that would simply create a port and add it to a topology, and do nothing more. Similarly, drm_dp_update_port() would be assumed to be the function that should be used to update port information after initial creation.
While those assumptions are currently correct in how these functions are used, a quick glance at drm_dp_add_port() reveals that drm_dp_add_port() can also update the information on a port, and seems explicitly designed to do so. This can be explained pretty simply by the fact that there's more situations that would involve updating the port information based on a link address response as opposed to a connection status notification than the driver's initial topology probe. Case in point: reprobing link addresses after suspend/resume.
Since we're about to start using drm_dp_add_port() differently for suspend/resume reprobing, let's rename both functions to clarify what they actually do.
Cc: Juston Li juston.li@intel.com Cc: Imre Deak imre.deak@intel.com Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: Harry Wentland hwentlan@amd.com Signed-off-by: Lyude Paul lyude@redhat.com --- drivers/gpu/drm/drm_dp_mst_topology.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 68fda2131feb..35ced8514e18 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1812,9 +1812,10 @@ static void build_mst_prop_path(const struct drm_dp_mst_branch *mstb, strlcat(proppath, temp, proppath_size); }
-static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, - struct drm_device *dev, - struct drm_dp_link_addr_reply_port *port_msg) +static void +drm_dp_mst_handle_link_address_port(struct drm_dp_mst_branch *mstb, + struct drm_device *dev, + struct drm_dp_link_addr_reply_port *port_msg) { struct drm_dp_mst_topology_mgr *mgr = mstb->mgr; struct drm_dp_mst_port *port; @@ -1922,8 +1923,9 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, drm_dp_mst_topology_put_port(port); }
-static void drm_dp_update_port(struct drm_dp_mst_branch *mstb, - struct drm_dp_connection_status_notify *conn_stat) +static void +drm_dp_mst_handle_conn_stat(struct drm_dp_mst_branch *mstb, + struct drm_dp_connection_status_notify *conn_stat) { struct drm_dp_mst_port *port; int old_ddps; @@ -2377,7 +2379,8 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, drm_dp_check_mstb_guid(mstb, reply->guid);
for (i = 0; i < reply->nports; i++) - drm_dp_add_port(mstb, mgr->dev, &reply->ports[i]); + drm_dp_mst_handle_link_address_port(mstb, mgr->dev, + &reply->ports[i]);
drm_kms_helper_hotplug_event(mgr->dev);
@@ -3205,7 +3208,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) }
if (msg.req_type == DP_CONNECTION_STATUS_NOTIFY) { - drm_dp_update_port(mstb, &msg.u.conn_stat); + drm_dp_mst_handle_conn_stat(mstb, &msg.u.conn_stat);
DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number,