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Diffstat (limited to 'drivers/thunderbolt/debugfs.c')
-rw-r--r--drivers/thunderbolt/debugfs.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c
index 4339e706cc3a..f92ad71ef983 100644
--- a/drivers/thunderbolt/debugfs.c
+++ b/drivers/thunderbolt/debugfs.c
@@ -942,7 +942,8 @@ static void margining_port_remove(struct tb_port *port)
snprintf(dir_name, sizeof(dir_name), "port%d", port->port);
parent = debugfs_lookup(dir_name, port->sw->debugfs_dir);
- debugfs_remove_recursive(debugfs_lookup("margining", parent));
+ if (parent)
+ debugfs_remove_recursive(debugfs_lookup("margining", parent));
kfree(port->usb4->margining);
port->usb4->margining = NULL;
@@ -967,19 +968,18 @@ static void margining_switch_init(struct tb_switch *sw)
static void margining_switch_remove(struct tb_switch *sw)
{
+ struct tb_port *upstream, *downstream;
struct tb_switch *parent_sw;
- struct tb_port *downstream;
u64 route = tb_route(sw);
if (!route)
return;
- /*
- * Upstream is removed with the router itself but we need to
- * remove the downstream port margining directory.
- */
+ upstream = tb_upstream_port(sw);
parent_sw = tb_switch_parent(sw);
downstream = tb_port_at(route, parent_sw);
+
+ margining_port_remove(upstream);
margining_port_remove(downstream);
}