diff options
Diffstat (limited to 'drivers/usb/serial/ipaq.c')
| -rw-r--r-- | drivers/usb/serial/ipaq.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index 24fcc64b837..3fea9298eb1 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -747,7 +747,6 @@ static void ipaq_read_bulk_callback(struct urb *urb) tty = tty_port_tty_get(&port->port); if (tty && urb->actual_length) { - tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); bytes_in += urb->actual_length; @@ -966,6 +965,15 @@ static int ipaq_calc_num_ports(struct usb_serial *serial) static int ipaq_startup(struct usb_serial *serial) { dbg("%s", __func__); + + /* 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 |