diff options
Diffstat (limited to 'drivers/usb/serial/ipaq.c')
-rw-r--r-- | drivers/usb/serial/ipaq.c | 51 |
1 files changed, 22 insertions, 29 deletions
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index ec1b8f2..cde0dcd 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -33,7 +33,8 @@ static int initial_wait; /* Function prototypes for an ipaq */ static int ipaq_open(struct tty_struct *tty, struct usb_serial_port *port); -static int ipaq_calc_num_ports(struct usb_serial *serial); +static int ipaq_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds); static int ipaq_startup(struct usb_serial *serial); static const struct usb_device_id ipaq_id_table[] = { @@ -550,42 +551,38 @@ static int ipaq_open(struct tty_struct *tty, return usb_serial_generic_open(tty, port); } -static int ipaq_calc_num_ports(struct usb_serial *serial) +static int ipaq_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { /* - * some devices have 3 endpoints, the 3rd of which - * must be ignored as it would make the core - * create a second port which oopses when used + * Some of the devices in ipaq_id_table[] are composite, and we + * shouldn't bind to all the interfaces. This test will rule out + * some obviously invalid possibilities. */ - int ipaq_num_ports = 1; - - dev_dbg(&serial->dev->dev, "%s - numberofendpoints: %d\n", __func__, - (int)serial->interface->cur_altsetting->desc.bNumEndpoints); + if (epds->num_bulk_in == 0 || epds->num_bulk_out == 0) + return -ENODEV; /* - * a few devices have 4 endpoints, seemingly Yakuma devices, - * and we need the second pair, so let them have 2 ports - * - * TODO: can we drop port 1 ? + * A few devices have four endpoints, seemingly Yakuma devices, and + * we need the second pair. */ - if (serial->interface->cur_altsetting->desc.bNumEndpoints > 3) { - ipaq_num_ports = 2; + if (epds->num_bulk_in > 1 && epds->num_bulk_out > 1) { + epds->bulk_in[0] = epds->bulk_in[1]; + epds->bulk_out[0] = epds->bulk_out[1]; } - return ipaq_num_ports; -} + /* + * Other devices have 3 endpoints, but we only use the first bulk in + * and out endpoints. + */ + epds->num_bulk_in = 1; + epds->num_bulk_out = 1; + return 1; +} static int ipaq_startup(struct usb_serial *serial) { - /* Some of the devices in ipaq_id_table[] are composite, and we - * shouldn't bind to all the interfaces. This test will rule out - * some obviously invalid possibilities. - */ - if (serial->num_bulk_in < serial->num_ports || - serial->num_bulk_out < serial->num_ports) - return -ENODEV; - if (serial->dev->actconfig->desc.bConfigurationValue != 1) { /* * FIXME: HP iPaq rx3715, possibly others, have 1 config that @@ -597,10 +594,6 @@ static int ipaq_startup(struct usb_serial *serial) return -ENODEV; } - dev_dbg(&serial->dev->dev, - "%s - iPAQ module configured for %d ports\n", __func__, - serial->num_ports); - return usb_reset_configuration(serial->dev); } |