This field on drm_dp_mst_branch was never filled
Initialize it to zero when the list of ports is created. When a port is added to the list, increment num_ports
Signed-off-by: David Francis David.Francis@amd.com --- drivers/gpu/drm/drm_dp_mst_topology.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 5a072571cb44..31b7213b6036 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -918,6 +918,7 @@ static struct drm_dp_mst_branch *drm_dp_add_mst_branch_device(u8 lct, u8 *rad) INIT_LIST_HEAD(&mstb->ports); kref_init(&mstb->topology_kref); kref_init(&mstb->malloc_kref); + mstb->num_ports = 0; return mstb; }
@@ -1672,6 +1673,7 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, mutex_lock(&mstb->mgr->lock); drm_dp_mst_topology_get_port(port); list_add(&port->next, &mstb->ports); + mstb->num_ports++; mutex_unlock(&mstb->mgr->lock); }