/* * 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/config.h> #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/ioctl.h> #include "usb-serial.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 usb_serial_port *port, struct file *filp); static void kobil_close (struct usb_serial_port *port, struct file *filp); static int kobil_write (struct usb_serial_port *port, const unsigned char *buf, int count); static int kobil_write_room(struct usb_serial_port *port); static int kobil_ioctl(struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg); static int kobil_tiocmget(struct usb_serial_port *port, struct file *file); static int kobil_tiocmset(struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs ); static void kobil_write_callback( struct urb *purb, struct pt_regs *regs ); 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", .id_table = id_table, .num_interrupt_in = NUM_DONT_CARE, .num_bulk_in = 0, .num_bulk_out = 0, .num_ports = 1, .attach = kobil_startup, .shutdown = kobil_shutdown, .ioctl = kobil_ioctl, .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; int line_state; struct termios internal_termios; }; 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); priv->line_state = 0; 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 (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) { dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress); priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress; } if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) { dbg("%s Found interrupt in endpoint. Address: %d", __FUNCTION__, 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", __FUNCTION__, serial->port[0]->number); for (i=0; i < serial->num_ports; ++i) { while (serial->port[i]->open_count > 0) { kobil_close (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 usb_serial_port *port, struct file *filp) { int i, 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", __FUNCTION__, port->number); priv = usb_get_serial_port_data(port); priv->line_state = 0; // 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. */ port->tty->low_latency = 1; // without this, every push_tty_char is echoed :-( port->tty->termios->c_lflag = 0; port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE); port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF; port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) // set up internal termios structure priv->internal_termios.c_iflag = port->tty->termios->c_iflag; priv->internal_termios.c_oflag = port->tty->termios->c_oflag; priv->internal_termios.c_cflag = port->tty->termios->c_cflag; priv->internal_termios.c_lflag = port->tty->termios->c_lflag; for (i=0; i<NCCS; i++) { priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i]; } // allocate memory for transfer buffer transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL); if (! transfer_buffer) { return -ENOMEM; } else { memset(transfer_buffer, 0, transfer_buffer_length); } // allocate write_urb if (!port->write_urb) { dbg("%s - port %d Allocating port->write_urb", __FUNCTION__, port->number); port->write_urb = usb_alloc_urb(0, GFP_KERNEL); if (!port->write_urb) { dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number); kfree(transfer_buffer); return -ENOMEM; } } // allocate memory for write_urb transfer buffer port->write_urb->transfer_buffer = (unsigned char *) 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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__, port->number, result); } kfree(transfer_buffer); return 0; } static void kobil_close (struct usb_serial_port *port, struct file *filp) { dbg("%s - port %d", __FUNCTION__, port->number); if (port->write_urb) { usb_kill_urb(port->write_urb); usb_free_urb( port->write_urb ); port->write_urb = NULL; } if (port->interrupt_in_urb) usb_kill_urb(port->interrupt_in_urb); } static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs) { int i; int result; struct usb_serial_port *port = (struct usb_serial_port *) purb->context; struct tty_struct *tty; unsigned char *data = purb->transfer_buffer; // char *dbg_data; dbg("%s - port %d", __FUNCTION__, port->number); if (purb->status) { dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status); return; } tty = port->tty; if (purb->actual_length) { // BEGIN DEBUG /* dbg_data = (unsigned char *) kmalloc((3 * purb->actual_length + 10) * sizeof(char), GFP_KERNEL); if (! dbg_data) { return; } memset(dbg_data, 0, (3 * purb->actual_length + 10)); 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 for (i = 0; i < purb->actual_length; ++i) { // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. if(tty->flip.count >= TTY_FLIPBUF_SIZE) { tty_flip_buffer_push(tty); } // this doesn't actually push the data through unless tty->low_latency is set tty_insert_flip_char(tty, data[i], 0); } 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", __FUNCTION__, port->number, result); } static void kobil_write_callback( struct urb *purb, struct pt_regs *regs ) { } static int kobil_write (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", __FUNCTION__, 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", __FUNCTION__, port->number); return -ENOMEM; } // Copy data to buffer memcpy (priv->buf + priv->filled, buf, count); usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__, port->number, result); } } return count; } static int kobil_write_room (struct usb_serial_port *port) { //dbg("%s - port %d", __FUNCTION__, port->number); return 8; } static int kobil_tiocmget(struct usb_serial_port *port, struct file *file) { 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 = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL); if (!transfer_buffer) { return -ENOMEM; } memset(transfer_buffer, 0, transfer_buffer_length); 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", __FUNCTION__, port->number, result, transfer_buffer[0]); if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) { priv->line_state |= TIOCM_DSR; } else { priv->line_state &= ~TIOCM_DSR; } kfree(transfer_buffer); return priv->line_state; } static int kobil_tiocmset(struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) { struct kobil_private * priv; int result; int dtr = 0; int rts = 0; 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 = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL); if (! transfer_buffer) { return -ENOMEM; } memset(transfer_buffer, 0, transfer_buffer_length); 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", __FUNCTION__, port->number); else dbg("%s - port %d Clearing DTR", __FUNCTION__, 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", __FUNCTION__, port->number); else dbg("%s - port %d Clearing RTS", __FUNCTION__, 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", __FUNCTION__, port->number, result); kfree(transfer_buffer); return (result < 0) ? result : 0; } static int kobil_ioctl(struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) { struct kobil_private * priv; int result; unsigned short urb_val = 0; unsigned char *transfer_buffer; int transfer_buffer_length = 8; char *settings; void __user *user_arg = (void __user *)arg; 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 0; } switch (cmd) { case TCGETS: // 0x5401 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) { dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number); return -EFAULT; } if (kernel_termios_to_user_termios((struct termios __user *)arg, &priv->internal_termios)) return -EFAULT; return 0; case TCSETS: // 0x5402 if (!(port->tty->termios)) { dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number); return -ENOTTY; } if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) { dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number); return -EFAULT; } if (user_termios_to_kernel_termios(&priv->internal_termios, (struct termios __user *)arg)) return -EFAULT; settings = (unsigned char *) kmalloc(50, GFP_KERNEL); if (! settings) { return -ENOBUFS; } memset(settings, 0, 50); switch (priv->internal_termios.c_cflag & CBAUD) { case B1200: urb_val = SUSBCR_SBR_1200; strcat(settings, "1200 "); break; case B9600: default: urb_val = SUSBCR_SBR_9600; strcat(settings, "9600 "); break; } urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit; strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit "); if (priv->internal_termios.c_cflag & PARENB) { if (priv->internal_termios.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"); } dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings ); 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 ); dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result); kfree(settings); return 0; case TCFLSH: // 0x540B transfer_buffer = (unsigned char *) 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", __FUNCTION__, port->number, result); kfree(transfer_buffer); return ((result < 0) ? -EFAULT : 0); } 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");