This will let us warn if we end up freeing a port when we're not
expecting to, which will make reporting erroneous usage of the new MST
VCPI helpers a little easier.
Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 529414556962..00fbe7a2699d 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -45,7 +45,7 @@ static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr,
char *buf);
static int test_calc_pbn_mode(void);
-static void drm_dp_put_port(struct drm_dp_mst_port *port);
+static int drm_dp_put_port(struct drm_dp_mst_port *port);
static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr,
int id,
@@ -969,9 +969,9 @@ static void drm_dp_destroy_port(struct kref *kref)
kfree(port);
}
-static void drm_dp_put_port(struct drm_dp_mst_port *port)
+static int drm_dp_put_port(struct drm_dp_mst_port *port)
{
- kref_put(&port->kref, drm_dp_destroy_port);
+ return kref_put(&port->kref, drm_dp_destroy_port);
}
static struct drm_dp_mst_branch *drm_dp_mst_get_validated_mstb_ref_locked(struct drm_dp_mst_branch *mstb, struct drm_dp_mst_branch *to_find)
--
2.19.1
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