USB: serial: clean up bus probe error handling

Clean up bus probe error handling by separating success and error paths.

Signed-off-by: Johan Hovold <johan@kernel.org>

diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
index b53a2869222601763890747db297480b0318d735..8936a83c96cd60c8a226e0c96a9908c06d356773 100644 (file)
--- a/drivers/usb/serial/bus.c
+++ b/drivers/usb/serial/bus.c
@@ -47,39 +47,42 @@ static int usb_serial_device_probe(struct device *dev)
        int minor;
 
        port = to_usb_serial_port(dev);
-       if (!port) {
-               retval = -ENODEV;
-               goto exit;
-       }
+       if (!port)
+               return -ENODEV;
 
        /* make sure suspend/resume doesn't race against port_probe */
        retval = usb_autopm_get_interface(port->serial->interface);
        if (retval)
-               goto exit;
+               return retval;
 
        driver = port->serial->type;
        if (driver->port_probe) {
                retval = driver->port_probe(port);
                if (retval)
-                       goto exit_with_autopm;
+                       goto err_autopm_put;
        }
 
        minor = port->minor;
        tty_dev = tty_register_device(usb_serial_tty_driver, minor, dev);
        if (IS_ERR(tty_dev)) {
                retval = PTR_ERR(tty_dev);
-               if (driver->port_remove)
-                       driver->port_remove(port);
-               goto exit_with_autopm;
+               goto err_port_remove;
        }
 
+       usb_autopm_put_interface(port->serial->interface);
+
        dev_info(&port->serial->dev->dev,
                 "%s converter now attached to ttyUSB%d\n",
                 driver->description, minor);
 
-exit_with_autopm:
+       return 0;
+
+err_port_remove:
+       if (driver->port_remove)
+               driver->port_remove(port);
+err_autopm_put:
        usb_autopm_put_interface(port->serial->interface);
-exit:
+
        return retval;
 }