On 2019-08-26 2:05 p.m., David Francis wrote: > This field on drm_dp_mst_branch was never filled > > It is initialized to zero when the port is kzallocced. > When a port is added to the list, increment num_ports, > and when a port is removed from the list, decrement num_ports. > > v2: remember to decrement on port removal > v3: don't explicitly init to 0 > > Signed-off-by: David Francis <David.Francis@xxxxxxx> > Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx> Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx> Harry > --- > 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 9f3604355705..502923c24450 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -1669,6 +1669,7 @@ 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); > } > > @@ -1703,6 +1704,7 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, > /* remove it from the port list */ > mutex_lock(&mstb->mgr->lock); > list_del(&port->next); > + mstb->num_ports--; > mutex_unlock(&mstb->mgr->lock); > /* drop port list reference */ > drm_dp_mst_topology_put_port(port); > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
