diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-03-03 11:25:08 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-03-13 11:54:14 +0200 |
| commit | acec726473822bc6b585961f4ca2a11fa7f28341 (patch) | |
| tree | 36110339c54c020e75f997b722f15d82cbbfe9f7 /drivers/thunderbolt | |
| parent | 7af9da8ce8f9a16221ecd8ba4280582f5bd452fc (diff) | |
| download | linux-acec726473822bc6b585961f4ca2a11fa7f28341.tar.gz | |
thunderbolt: Fix memory leak in margining
Memory for the usb4->margining needs to be relased for the upstream port
of the router as well, even though the debugfs directory gets released
with the router device removal. Fix this.
Fixes: d0f1e0c2a699 ("thunderbolt: Add support for receiver lane margining")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/debugfs.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index 4339e706cc3a1..f92ad71ef9831 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); } |