75318d2d7c
It is no longer needed, so let's remove it, saving a bit of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
|
|
* AnyData CDMA Serial USB driver
|
|
*
|
|
* Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version
|
|
* 2 as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/module.h>
|
|
#include <linux/usb.h>
|
|
#include "usb-serial.h"
|
|
|
|
static struct usb_device_id id_table [] = {
|
|
{ USB_DEVICE(0x16d5, 0x6501) }, /* AirData CDMA device */
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, id_table);
|
|
|
|
/* if overridden by the user, then use their value for the size of the
|
|
* read and write urbs */
|
|
static int buffer_size;
|
|
static int debug;
|
|
|
|
static struct usb_driver anydata_driver = {
|
|
.name = "anydata",
|
|
.probe = usb_serial_probe,
|
|
.disconnect = usb_serial_disconnect,
|
|
.id_table = id_table,
|
|
.no_dynamic_id = 1,
|
|
};
|
|
|
|
static int anydata_open(struct usb_serial_port *port, struct file *filp)
|
|
{
|
|
char *buffer;
|
|
int result = 0;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
if (buffer_size) {
|
|
/* override the default buffer sizes */
|
|
buffer = kmalloc(buffer_size, GFP_KERNEL);
|
|
if (!buffer) {
|
|
dev_err(&port->dev, "%s - out of memory.\n",
|
|
__FUNCTION__);
|
|
return -ENOMEM;
|
|
}
|
|
kfree (port->read_urb->transfer_buffer);
|
|
port->read_urb->transfer_buffer = buffer;
|
|
port->read_urb->transfer_buffer_length = buffer_size;
|
|
|
|
buffer = kmalloc(buffer_size, GFP_KERNEL);
|
|
if (!buffer) {
|
|
dev_err(&port->dev, "%s - out of memory.\n",
|
|
__FUNCTION__);
|
|
return -ENOMEM;
|
|
}
|
|
kfree (port->write_urb->transfer_buffer);
|
|
port->write_urb->transfer_buffer = buffer;
|
|
port->write_urb->transfer_buffer_length = buffer_size;
|
|
port->bulk_out_size = buffer_size;
|
|
}
|
|
|
|
/* Start reading from the device */
|
|
usb_fill_bulk_urb(port->read_urb, port->serial->dev,
|
|
usb_rcvbulkpipe(port->serial->dev,
|
|
port->bulk_in_endpointAddress),
|
|
port->read_urb->transfer_buffer,
|
|
port->read_urb->transfer_buffer_length,
|
|
usb_serial_generic_write_bulk_callback, port);
|
|
result = usb_submit_urb(port->read_urb, GFP_KERNEL);
|
|
if (result)
|
|
dev_err(&port->dev,
|
|
"%s - failed submitting read urb, error %d\n",
|
|
__FUNCTION__, result);
|
|
|
|
return result;
|
|
}
|
|
|
|
static struct usb_serial_driver anydata_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "anydata",
|
|
},
|
|
.id_table = id_table,
|
|
.num_interrupt_in = NUM_DONT_CARE,
|
|
.num_bulk_in = NUM_DONT_CARE,
|
|
.num_bulk_out = NUM_DONT_CARE,
|
|
.num_ports = 1,
|
|
.open = anydata_open,
|
|
};
|
|
|
|
static int __init anydata_init(void)
|
|
{
|
|
int retval;
|
|
|
|
retval = usb_serial_register(&anydata_device);
|
|
if (retval)
|
|
return retval;
|
|
retval = usb_register(&anydata_driver);
|
|
if (retval)
|
|
usb_serial_deregister(&anydata_device);
|
|
return retval;
|
|
}
|
|
|
|
static void __exit anydata_exit(void)
|
|
{
|
|
usb_deregister(&anydata_driver);
|
|
usb_serial_deregister(&anydata_device);
|
|
}
|
|
|
|
module_init(anydata_init);
|
|
module_exit(anydata_exit);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|
|
module_param(buffer_size, int, 0);
|
|
MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");
|