diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/generic.c | 18 | ||||
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 31 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 4f8282ad772..b90ef3f70f4 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -69,6 +69,7 @@ struct usb_serial_driver usb_serial_generic_device = { .shutdown = usb_serial_generic_shutdown, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, + .resume = usb_serial_generic_resume, }; static int generic_probe(struct usb_interface *interface, @@ -169,6 +170,23 @@ static void generic_cleanup (struct usb_serial_port *port) } } +int usb_serial_generic_resume(struct usb_serial *serial) +{ + struct usb_serial_port *port; + int i, c = 0, r; + + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + if (port->open_count && port->read_urb) { + r = usb_submit_urb(port->read_urb, GFP_NOIO); + if (r < 0) + c++; + } + } + + return c ? -EIO : 0; +} + void usb_serial_generic_close (struct usb_serial_port *port, struct file * filp) { dbg("%s - port %d", __FUNCTION__, port->number); diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 87f378806db..e3e3728e16e 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -46,6 +46,8 @@ static struct usb_driver usb_serial_driver = { .name = "usbserial", .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, + .suspend = usb_serial_suspend, + .resume = usb_serial_resume, .no_dynamic_id = 1, }; @@ -1069,6 +1071,35 @@ void usb_serial_disconnect(struct usb_interface *interface) dev_info(dev, "device disconnected\n"); } +int usb_serial_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct usb_serial *serial = usb_get_intfdata(intf); + struct usb_serial_port *port; + int i, r = 0; + + if (serial) { + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + if (port) + kill_traffic(port); + } + } + + if (serial->type->suspend) + serial->type->suspend(serial, message); + + return r; +} +EXPORT_SYMBOL(usb_serial_suspend); + +int usb_serial_resume(struct usb_interface *intf) +{ + struct usb_serial *serial = usb_get_intfdata(intf); + + return serial->type->resume(serial); +} +EXPORT_SYMBOL(usb_serial_resume); + static const struct tty_operations serial_ops = { .open = serial_open, .close = serial_close, |