linux_dsm_epyc7002/drivers/usb/serial/kobil_sct.c
Alan Cox 95da310e66 usb_serial: API all change
USB serial likes to use port->tty back pointers for the real work it does and
to do so without any actual locking. Unfortunately when you consider hangup
events, hangup/parallel reopen or even worse hangup followed by parallel close
events the tty->port and port->tty pointers are not guaranteed to be the same
as port->tty is the active tty while tty->port is the port the tty may or
may not still be attached to.

So rework the entire API to pass the tty struct. For console cases we need
to pass both for now. This shows up multiple drivers that immediately crash
with USB console some of which have been fixed in the process.

Longer term we need a proper tty as console abstraction

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:22 -07:00

733 lines
21 KiB
C

/*
* KOBIL USB Smart Card Terminal Driver
*
* Copyright (C) 2002 KOBIL Systems GmbH
* Author: Thomas Wahrenbruch
*
* Contact: linuxusb@kobil.de
*
* This program is largely derived from work by the linux-usb group
* and associated source files. Please see the usb/serial files for
* individual credits and copyrights.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
* patience.
*
* Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
* (Adapter K), B1 Professional and KAAN Professional (Adapter B)
*
* (21/05/2004) tw
* Fix bug with P'n'P readers
*
* (28/05/2003) tw
* Add support for KAAN SIM
*
* (12/09/2002) tw
* Adapted to 2.5.
*
* (11/08/2002) tw
* Initial version.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/ioctl.h>
#include "kobil_sct.h"
static int debug;
/* Version Information */
#define DRIVER_VERSION "21/05/2004"
#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
#define KOBIL_VENDOR_ID 0x0D46
#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
#define KOBIL_USBTWIN_PRODUCT_ID 0x0078
#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
#define KOBIL_TIMEOUT 500
#define KOBIL_BUF_LENGTH 300
/* Function prototypes */
static int kobil_startup (struct usb_serial *serial);
static void kobil_shutdown (struct usb_serial *serial);
static int kobil_open (struct tty_struct *tty,
struct usb_serial_port *port, struct file *filp);
static void kobil_close (struct tty_struct *tty, struct usb_serial_port *port,
struct file *filp);
static int kobil_write (struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count);
static int kobil_write_room(struct tty_struct *tty);
static int kobil_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
static int kobil_tiocmget(struct tty_struct *tty, struct file *file);
static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
static void kobil_read_int_callback( struct urb *urb );
static void kobil_write_callback( struct urb *purb );
static void kobil_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old);
static struct usb_device_id id_table [] = {
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, id_table);
static struct usb_driver kobil_driver = {
.name = "kobil",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table,
.no_dynamic_id = 1,
};
static struct usb_serial_driver kobil_device = {
.driver = {
.owner = THIS_MODULE,
.name = "kobil",
},
.description = "KOBIL USB smart card terminal",
.usb_driver = &kobil_driver,
.id_table = id_table,
.num_ports = 1,
.attach = kobil_startup,
.shutdown = kobil_shutdown,
.ioctl = kobil_ioctl,
.set_termios = kobil_set_termios,
.tiocmget = kobil_tiocmget,
.tiocmset = kobil_tiocmset,
.open = kobil_open,
.close = kobil_close,
.write = kobil_write,
.write_room = kobil_write_room,
.read_int_callback = kobil_read_int_callback,
};
struct kobil_private {
int write_int_endpoint_address;
int read_int_endpoint_address;
unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
int filled; // index of the last char in buf
int cur_pos; // index of the next char to send in buf
__u16 device_type;
};
static int kobil_startup (struct usb_serial *serial)
{
int i;
struct kobil_private *priv;
struct usb_device *pdev;
struct usb_host_config *actconfig;
struct usb_interface *interface;
struct usb_host_interface *altsetting;
struct usb_host_endpoint *endpoint;
priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
if (!priv){
return -ENOMEM;
}
priv->filled = 0;
priv->cur_pos = 0;
priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
switch (priv->device_type){
case KOBIL_ADAPTER_B_PRODUCT_ID:
printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
break;
case KOBIL_ADAPTER_K_PRODUCT_ID:
printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
break;
case KOBIL_USBTWIN_PRODUCT_ID:
printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
break;
case KOBIL_KAAN_SIM_PRODUCT_ID:
printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
break;
}
usb_set_serial_port_data(serial->port[0], priv);
// search for the necessary endpoints
pdev = serial->dev;
actconfig = pdev->actconfig;
interface = actconfig->interface[0];
altsetting = interface->cur_altsetting;
endpoint = altsetting->endpoint;
for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
endpoint = &altsetting->endpoint[i];
if (usb_endpoint_is_int_out(&endpoint->desc)) {
dbg("%s Found interrupt out endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
}
if (usb_endpoint_is_int_in(&endpoint->desc)) {
dbg("%s Found interrupt in endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
}
}
return 0;
}
static void kobil_shutdown (struct usb_serial *serial)
{
int i;
dbg("%s - port %d", __func__, serial->port[0]->number);
for (i=0; i < serial->num_ports; ++i) {
while (serial->port[i]->port.count > 0) {
kobil_close (NULL, serial->port[i], NULL);
}
kfree(usb_get_serial_port_data(serial->port[i]));
usb_set_serial_port_data(serial->port[i], NULL);
}
}
static int kobil_open(struct tty_struct *tty,
struct usb_serial_port *port, struct file *filp)
{
int result = 0;
struct kobil_private *priv;
unsigned char *transfer_buffer;
int transfer_buffer_length = 8;
int write_urb_transfer_buffer_length = 8;
dbg("%s - port %d", __func__, port->number);
priv = usb_get_serial_port_data(port);
// someone sets the dev to 0 if the close method has been called
port->interrupt_in_urb->dev = port->serial->dev;
/* force low_latency on so that our tty_push actually forces
* the data through, otherwise it is scheduled, and with high
* data rates (like with OHCI) data can get lost.
*/
if (tty) {
tty->low_latency = 1;
/* Default to echo off and other sane device settings */
tty->termios->c_lflag = 0;
tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
}
// allocate memory for transfer buffer
transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
if (! transfer_buffer) {
return -ENOMEM;
}
// allocate write_urb
if (!port->write_urb) {
dbg("%s - port %d Allocating port->write_urb", __func__, port->number);
port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!port->write_urb) {
dbg("%s - port %d usb_alloc_urb failed", __func__, port->number);
kfree(transfer_buffer);
return -ENOMEM;
}
}
// allocate memory for write_urb transfer buffer
port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
if (! port->write_urb->transfer_buffer) {
kfree(transfer_buffer);
usb_free_urb(port->write_urb);
port->write_urb = NULL;
return -ENOMEM;
}
// get hardware version
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_GetMisc,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
SUSBCR_MSC_GetHWVersion,
0,
transfer_buffer,
transfer_buffer_length,
KOBIL_TIMEOUT
);
dbg("%s - port %d Send get_HW_version URB returns: %i", __func__, port->number, result);
dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
// get firmware version
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_GetMisc,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
SUSBCR_MSC_GetFWVersion,
0,
transfer_buffer,
transfer_buffer_length,
KOBIL_TIMEOUT
);
dbg("%s - port %d Send get_FW_version URB returns: %i", __func__, port->number, result);
dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
// Setting Baudrate, Parity and Stopbits
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_SetBaudRateParityAndStopBits,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
0,
transfer_buffer,
0,
KOBIL_TIMEOUT
);
dbg("%s - port %d Send set_baudrate URB returns: %i", __func__, port->number, result);
// reset all queues
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_Misc,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
SUSBCR_MSC_ResetAllQueues,
0,
transfer_buffer,
0,
KOBIL_TIMEOUT
);
dbg("%s - port %d Send reset_all_queues URB returns: %i", __func__, port->number, result);
}
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
// start reading (Adapter B 'cause PNP string)
result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
}
kfree(transfer_buffer);
return 0;
}
static void kobil_close(struct tty_struct *tty,
struct usb_serial_port *port, struct file *filp)
{
dbg("%s - port %d", __func__, port->number);
if (port->write_urb) {
usb_kill_urb(port->write_urb);
usb_free_urb( port->write_urb );
port->write_urb = NULL;
}
usb_kill_urb(port->interrupt_in_urb);
}
static void kobil_read_int_callback(struct urb *urb)
{
int result;
struct usb_serial_port *port = urb->context;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
// char *dbg_data;
dbg("%s - port %d", __func__, port->number);
if (status) {
dbg("%s - port %d Read int status not zero: %d",
__func__, port->number, status);
return;
}
tty = port->port.tty;
if (urb->actual_length) {
// BEGIN DEBUG
/*
dbg_data = kzalloc((3 * purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
if (! dbg_data) {
return;
}
for (i = 0; i < purb->actual_length; i++) {
sprintf(dbg_data +3*i, "%02X ", data[i]);
}
dbg(" <-- %s", dbg_data );
kfree(dbg_data);
*/
// END DEBUG
tty_buffer_request_room(tty, urb->actual_length);
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
}
// someone sets the dev to 0 if the close method has been called
port->interrupt_in_urb->dev = port->serial->dev;
result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
}
static void kobil_write_callback( struct urb *purb )
{
}
static int kobil_write (struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
{
int length = 0;
int result = 0;
int todo = 0;
struct kobil_private * priv;
if (count == 0) {
dbg("%s - port %d write request of 0 bytes", __func__, port->number);
return 0;
}
priv = usb_get_serial_port_data(port);
if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
return -ENOMEM;
}
// Copy data to buffer
memcpy (priv->buf + priv->filled, buf, count);
usb_serial_debug_data(debug, &port->dev, __func__, count, priv->buf + priv->filled);
priv->filled = priv->filled + count;
// only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
// stop reading (except TWIN and KAAN SIM)
if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
usb_kill_urb(port->interrupt_in_urb);
todo = priv->filled - priv->cur_pos;
while(todo > 0) {
// max 8 byte in one urb (endpoint size)
length = (todo < 8) ? todo : 8;
// copy data to transfer buffer
memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
usb_fill_int_urb( port->write_urb,
port->serial->dev,
usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
port->write_urb->transfer_buffer,
length,
kobil_write_callback,
port,
8
);
priv->cur_pos = priv->cur_pos + length;
result = usb_submit_urb( port->write_urb, GFP_NOIO );
dbg("%s - port %d Send write URB returns: %i", __func__, port->number, result);
todo = priv->filled - priv->cur_pos;
if (todo > 0) {
msleep(24);
}
} // end while
priv->filled = 0;
priv->cur_pos = 0;
// someone sets the dev to 0 if the close method has been called
port->interrupt_in_urb->dev = port->serial->dev;
// start reading (except TWIN and KAAN SIM)
if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
// someone sets the dev to 0 if the close method has been called
port->interrupt_in_urb->dev = port->serial->dev;
result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
}
}
return count;
}
static int kobil_write_room (struct tty_struct *tty)
{
//dbg("%s - port %d", __func__, port->number);
/* FIXME */
return 8;
}
static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
{
struct usb_serial_port *port = tty->driver_data;
struct kobil_private * priv;
int result;
unsigned char *transfer_buffer;
int transfer_buffer_length = 8;
priv = usb_get_serial_port_data(port);
if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
// This device doesn't support ioctl calls
return -EINVAL;
}
// allocate memory for transfer buffer
transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
if (!transfer_buffer) {
return -ENOMEM;
}
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_GetStatusLineState,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
0,
0,
transfer_buffer,
transfer_buffer_length,
KOBIL_TIMEOUT);
dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
__func__, port->number, result, transfer_buffer[0]);
result = 0;
if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
result = TIOCM_DSR;
kfree(transfer_buffer);
return result;
}
static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
struct kobil_private * priv;
int result;
int dtr = 0;
int rts = 0;
unsigned char *transfer_buffer;
int transfer_buffer_length = 8;
/* FIXME: locking ? */
priv = usb_get_serial_port_data(port);
if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
// This device doesn't support ioctl calls
return -EINVAL;
}
// allocate memory for transfer buffer
transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
if (! transfer_buffer) {
return -ENOMEM;
}
if (set & TIOCM_RTS)
rts = 1;
if (set & TIOCM_DTR)
dtr = 1;
if (clear & TIOCM_RTS)
rts = 0;
if (clear & TIOCM_DTR)
dtr = 0;
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
if (dtr != 0)
dbg("%s - port %d Setting DTR", __func__, port->number);
else
dbg("%s - port %d Clearing DTR", __func__, port->number);
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_SetStatusLinesOrQueues,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
0,
transfer_buffer,
0,
KOBIL_TIMEOUT);
} else {
if (rts != 0)
dbg("%s - port %d Setting RTS", __func__, port->number);
else
dbg("%s - port %d Clearing RTS", __func__, port->number);
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_SetStatusLinesOrQueues,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
0,
transfer_buffer,
0,
KOBIL_TIMEOUT);
}
dbg("%s - port %d Send set_status_line URB returns: %i", __func__, port->number, result);
kfree(transfer_buffer);
return (result < 0) ? result : 0;
}
static void kobil_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old)
{
struct kobil_private * priv;
int result;
unsigned short urb_val = 0;
int c_cflag = tty->termios->c_cflag;
speed_t speed;
void * settings;
priv = usb_get_serial_port_data(port);
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
// This device doesn't support ioctl calls
return;
switch (speed = tty_get_baud_rate(tty)) {
case 1200:
urb_val = SUSBCR_SBR_1200;
break;
default:
speed = 9600;
case 9600:
urb_val = SUSBCR_SBR_9600;
break;
}
urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
settings = kzalloc(50, GFP_KERNEL);
if (! settings)
return;
sprintf(settings, "%d ", speed);
if (c_cflag & PARENB) {
if (c_cflag & PARODD) {
urb_val |= SUSBCR_SPASB_OddParity;
strcat(settings, "Odd Parity");
} else {
urb_val |= SUSBCR_SPASB_EvenParity;
strcat(settings, "Even Parity");
}
} else {
urb_val |= SUSBCR_SPASB_NoParity;
strcat(settings, "No Parity");
}
tty->termios->c_cflag &= ~CMSPAR;
tty_encode_baud_rate(tty, speed, speed);
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_SetBaudRateParityAndStopBits,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
urb_val,
0,
settings,
0,
KOBIL_TIMEOUT
);
kfree(settings);
}
static int kobil_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
struct kobil_private * priv = usb_get_serial_port_data(port);
unsigned char *transfer_buffer;
int transfer_buffer_length = 8;
int result;
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
// This device doesn't support ioctl calls
return 0;
switch (cmd) {
case TCFLSH:
transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
if (! transfer_buffer)
return -ENOBUFS;
result = usb_control_msg( port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0 ),
SUSBCRequest_Misc,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
SUSBCR_MSC_ResetAllQueues,
0,
NULL,//transfer_buffer,
0,
KOBIL_TIMEOUT
);
dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
kfree(transfer_buffer);
return (result < 0) ? -EIO: 0;
default:
return -ENOIOCTLCMD;
}
}
static int __init kobil_init (void)
{
int retval;
retval = usb_serial_register(&kobil_device);
if (retval)
goto failed_usb_serial_register;
retval = usb_register(&kobil_driver);
if (retval)
goto failed_usb_register;
info(DRIVER_VERSION " " DRIVER_AUTHOR);
info(DRIVER_DESC);
return 0;
failed_usb_register:
usb_serial_deregister(&kobil_device);
failed_usb_serial_register:
return retval;
}
static void __exit kobil_exit (void)
{
usb_deregister (&kobil_driver);
usb_serial_deregister (&kobil_device);
}
module_init(kobil_init);
module_exit(kobil_exit);
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE( "GPL" );
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");