diff options
Diffstat (limited to 'drivers/usb/serial/bus.c')
| -rw-r--r-- | drivers/usb/serial/bus.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c index 6c812d01b37d..9e2a18c0b218 100644 --- a/drivers/usb/serial/bus.c +++ b/drivers/usb/serial/bus.c @@ -14,10 +14,10 @@ #include <linux/usb/serial.h> static int usb_serial_device_match(struct device *dev, - struct device_driver *drv) + const struct device_driver *drv) { const struct usb_serial_port *port = to_usb_serial_port(dev); - struct usb_serial_driver *driver = to_usb_serial_driver(drv); + const struct usb_serial_driver *driver = to_usb_serial_driver(drv); /* * drivers are already assigned to ports in serial_probe so it's @@ -136,12 +136,11 @@ static void free_dynids(struct usb_serial_driver *drv) { struct usb_dynid *dynid, *n; - spin_lock(&drv->dynids.lock); + guard(mutex)(&usb_dynids_lock); list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { list_del(&dynid->node); kfree(dynid); } - spin_unlock(&drv->dynids.lock); } const struct bus_type usb_serial_bus_type = { @@ -157,7 +156,6 @@ int usb_serial_bus_register(struct usb_serial_driver *driver) int retval; driver->driver.bus = &usb_serial_bus_type; - spin_lock_init(&driver->dynids.lock); INIT_LIST_HEAD(&driver->dynids.list); retval = driver_register(&driver->driver); |