diff options
Diffstat (limited to 'drivers/usb/serial/metro-usb.c')
-rw-r--r-- | drivers/usb/serial/metro-usb.c | 65 |
1 files changed, 19 insertions, 46 deletions
diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c index 0b257dd..6f29c74 100644 --- a/drivers/usb/serial/metro-usb.c +++ b/drivers/usb/serial/metro-usb.c @@ -179,16 +179,13 @@ static void metrousb_cleanup(struct usb_serial_port *port) { dev_dbg(&port->dev, "%s\n", __func__); - if (port->serial->dev) { - /* Shutdown any interrupt in urbs. */ - if (port->interrupt_in_urb) { - usb_unlink_urb(port->interrupt_in_urb); - usb_kill_urb(port->interrupt_in_urb); - } - - /* Send deactivate cmd to device */ + usb_unlink_urb(port->interrupt_in_urb); + usb_kill_urb(port->interrupt_in_urb); + + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port); - } + mutex_unlock(&port->serial->disc_mutex); } static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port) @@ -271,51 +268,27 @@ static int metrousb_set_modem_ctrl(struct usb_serial *serial, unsigned int contr return retval; } -static void metrousb_shutdown(struct usb_serial *serial) +static int metrousb_port_probe(struct usb_serial_port *port) { - int i = 0; + struct metrousb_private *metro_priv; - dev_dbg(&serial->dev->dev, "%s\n", __func__); + metro_priv = kzalloc(sizeof(*metro_priv), GFP_KERNEL); + if (!metro_priv) + return -ENOMEM; - /* Stop reading and writing on all ports. */ - for (i = 0; i < serial->num_ports; ++i) { - /* Close any open urbs. */ - metrousb_cleanup(serial->port[i]); + spin_lock_init(&metro_priv->lock); - /* Free memory. */ - kfree(usb_get_serial_port_data(serial->port[i])); - usb_set_serial_port_data(serial->port[i], NULL); + usb_set_serial_port_data(port, metro_priv); - dev_dbg(&serial->dev->dev, "%s - freed port number=%d\n", - __func__, serial->port[i]->number); - } + return 0; } -static int metrousb_startup(struct usb_serial *serial) +static int metrousb_port_remove(struct usb_serial_port *port) { struct metrousb_private *metro_priv; - struct usb_serial_port *port; - int i = 0; - dev_dbg(&serial->dev->dev, "%s\n", __func__); - - /* Loop through the serial ports setting up the private structures. - * Currently we only use one port. */ - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - - /* Declare memory. */ - metro_priv = kzalloc(sizeof(struct metrousb_private), GFP_KERNEL); - if (!metro_priv) - return -ENOMEM; - - /* Initialize memory. */ - spin_lock_init(&metro_priv->lock); - usb_set_serial_port_data(port, metro_priv); - - dev_dbg(&serial->dev->dev, "%s - port number=%d\n ", - __func__, port->number); - } + metro_priv = usb_get_serial_port_data(port); + kfree(metro_priv); return 0; } @@ -414,8 +387,8 @@ static struct usb_serial_driver metrousb_device = { .close = metrousb_cleanup, .read_int_callback = metrousb_read_int_callback, .write_int_callback = metrousb_write_int_callback, - .attach = metrousb_startup, - .release = metrousb_shutdown, + .port_probe = metrousb_port_probe, + .port_remove = metrousb_port_remove, .throttle = metrousb_throttle, .unthrottle = metrousb_unthrottle, .tiocmget = metrousb_tiocmget, |