diff options
Diffstat (limited to 'drivers/usb/serial/generic.c')
| -rw-r--r-- | drivers/usb/serial/generic.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 49ce2be90fa0..35cb8c0e584f 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -37,13 +37,41 @@ MODULE_PARM_DESC(product, "User specified USB idProduct"); static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */ -struct usb_serial_driver usb_serial_generic_device = { +static int usb_serial_generic_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + struct device *dev = &serial->interface->dev; + + dev_info(dev, "The \"generic\" usb-serial driver is only for testing and one-off prototypes.\n"); + dev_info(dev, "Tell linux-usb@vger.kernel.org to add your device to a proper driver.\n"); + + return 0; +} + +static int usb_serial_generic_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) +{ + struct device *dev = &serial->interface->dev; + int num_ports; + + num_ports = max(epds->num_bulk_in, epds->num_bulk_out); + + if (num_ports == 0) { + dev_err(dev, "device has no bulk endpoints\n"); + return -ENODEV; + } + + return num_ports; +} + +static struct usb_serial_driver usb_serial_generic_device = { .driver = { .owner = THIS_MODULE, .name = "generic", }, .id_table = generic_device_ids, - .num_ports = 1, + .probe = usb_serial_generic_probe, + .calc_num_ports = usb_serial_generic_calc_num_ports, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .resume = usb_serial_generic_resume, |