Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
596
drivers/usb/serial/empeg.c
Normal file
596
drivers/usb/serial/empeg.c
Normal file
@@ -0,0 +1,596 @@
|
||||
/*
|
||||
* USB Empeg empeg-car player driver
|
||||
*
|
||||
* Copyright (C) 2000, 2001
|
||||
* Gary Brubaker (xavyer@ix.netcom.com)
|
||||
*
|
||||
* Copyright (C) 1999 - 2001
|
||||
* Greg Kroah-Hartman (greg@kroah.com)
|
||||
*
|
||||
* 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, version 2.
|
||||
*
|
||||
* See Documentation/usb/usb-serial.txt for more information on using this driver
|
||||
*
|
||||
* (07/16/2001) gb
|
||||
* remove unused code in empeg_close() (thanks to Oliver Neukum for pointing this
|
||||
* out) and rewrote empeg_set_termios().
|
||||
*
|
||||
* (05/30/2001) gkh
|
||||
* switched from using spinlock to a semaphore, which fixes lots of problems.
|
||||
*
|
||||
* (04/08/2001) gb
|
||||
* Identify version on module load.
|
||||
*
|
||||
* (01/22/2001) gb
|
||||
* Added write_room() and chars_in_buffer() support.
|
||||
*
|
||||
* (12/21/2000) gb
|
||||
* Moved termio stuff inside the port->active check.
|
||||
* Moved MOD_DEC_USE_COUNT to end of empeg_close().
|
||||
*
|
||||
* (12/03/2000) gb
|
||||
* Added port->tty->ldisc.set_termios(port->tty, NULL) to empeg_open()
|
||||
* This notifies the tty driver that the termios have changed.
|
||||
*
|
||||
* (11/13/2000) gb
|
||||
* Moved tty->low_latency = 1 from empeg_read_bulk_callback() to empeg_open()
|
||||
* (It only needs to be set once - Doh!)
|
||||
*
|
||||
* (11/11/2000) gb
|
||||
* Updated to work with id_table structure.
|
||||
*
|
||||
* (11/04/2000) gb
|
||||
* Forked this from visor.c, and hacked it up to work with an
|
||||
* Empeg ltd. empeg-car player. Constructive criticism welcomed.
|
||||
* I would like to say, 'Thank You' to Greg Kroah-Hartman for the
|
||||
* use of his code, and for his guidance, advice and patience. :)
|
||||
* A 'Thank You' is in order for John Ripley of Empeg ltd for his
|
||||
* advice, and patience too.
|
||||
*
|
||||
*/
|
||||
|
||||
#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 "usb-serial.h"
|
||||
|
||||
static int debug;
|
||||
|
||||
/*
|
||||
* Version Information
|
||||
*/
|
||||
#define DRIVER_VERSION "v1.2"
|
||||
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
|
||||
#define DRIVER_DESC "USB Empeg Mark I/II Driver"
|
||||
|
||||
#define EMPEG_VENDOR_ID 0x084f
|
||||
#define EMPEG_PRODUCT_ID 0x0001
|
||||
|
||||
/* function prototypes for an empeg-car player */
|
||||
static int empeg_open (struct usb_serial_port *port, struct file *filp);
|
||||
static void empeg_close (struct usb_serial_port *port, struct file *filp);
|
||||
static int empeg_write (struct usb_serial_port *port,
|
||||
const unsigned char *buf,
|
||||
int count);
|
||||
static int empeg_write_room (struct usb_serial_port *port);
|
||||
static int empeg_chars_in_buffer (struct usb_serial_port *port);
|
||||
static void empeg_throttle (struct usb_serial_port *port);
|
||||
static void empeg_unthrottle (struct usb_serial_port *port);
|
||||
static int empeg_startup (struct usb_serial *serial);
|
||||
static void empeg_shutdown (struct usb_serial *serial);
|
||||
static int empeg_ioctl (struct usb_serial_port *port,
|
||||
struct file * file,
|
||||
unsigned int cmd,
|
||||
unsigned long arg);
|
||||
static void empeg_set_termios (struct usb_serial_port *port, struct termios *old_termios);
|
||||
static void empeg_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
|
||||
static void empeg_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
|
||||
|
||||
static struct usb_device_id id_table [] = {
|
||||
{ USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
|
||||
{ } /* Terminating entry */
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE (usb, id_table);
|
||||
|
||||
static struct usb_driver empeg_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "empeg",
|
||||
.probe = usb_serial_probe,
|
||||
.disconnect = usb_serial_disconnect,
|
||||
.id_table = id_table,
|
||||
};
|
||||
|
||||
static struct usb_serial_device_type empeg_device = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "Empeg",
|
||||
.id_table = id_table,
|
||||
.num_interrupt_in = 0,
|
||||
.num_bulk_in = 1,
|
||||
.num_bulk_out = 1,
|
||||
.num_ports = 1,
|
||||
.open = empeg_open,
|
||||
.close = empeg_close,
|
||||
.throttle = empeg_throttle,
|
||||
.unthrottle = empeg_unthrottle,
|
||||
.attach = empeg_startup,
|
||||
.shutdown = empeg_shutdown,
|
||||
.ioctl = empeg_ioctl,
|
||||
.set_termios = empeg_set_termios,
|
||||
.write = empeg_write,
|
||||
.write_room = empeg_write_room,
|
||||
.chars_in_buffer = empeg_chars_in_buffer,
|
||||
.write_bulk_callback = empeg_write_bulk_callback,
|
||||
.read_bulk_callback = empeg_read_bulk_callback,
|
||||
};
|
||||
|
||||
#define NUM_URBS 16
|
||||
#define URB_TRANSFER_BUFFER_SIZE 4096
|
||||
|
||||
static struct urb *write_urb_pool[NUM_URBS];
|
||||
static spinlock_t write_urb_pool_lock;
|
||||
static int bytes_in;
|
||||
static int bytes_out;
|
||||
|
||||
/******************************************************************************
|
||||
* Empeg specific driver functions
|
||||
******************************************************************************/
|
||||
static int empeg_open (struct usb_serial_port *port, struct file *filp)
|
||||
{
|
||||
struct usb_serial *serial = port->serial;
|
||||
int result = 0;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
/* Force default termio settings */
|
||||
empeg_set_termios (port, NULL) ;
|
||||
|
||||
bytes_in = 0;
|
||||
bytes_out = 0;
|
||||
|
||||
/* Start reading from the device */
|
||||
usb_fill_bulk_urb(
|
||||
port->read_urb,
|
||||
serial->dev,
|
||||
usb_rcvbulkpipe(serial->dev,
|
||||
port->bulk_in_endpointAddress),
|
||||
port->read_urb->transfer_buffer,
|
||||
port->read_urb->transfer_buffer_length,
|
||||
empeg_read_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 void empeg_close (struct usb_serial_port *port, struct file * filp)
|
||||
{
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
/* shutdown our bulk read */
|
||||
usb_kill_urb(port->read_urb);
|
||||
/* Uncomment the following line if you want to see some statistics in your syslog */
|
||||
/* dev_info (&port->dev, "Bytes In = %d Bytes Out = %d\n", bytes_in, bytes_out); */
|
||||
}
|
||||
|
||||
|
||||
static int empeg_write (struct usb_serial_port *port, const unsigned char *buf, int count)
|
||||
{
|
||||
struct usb_serial *serial = port->serial;
|
||||
struct urb *urb;
|
||||
const unsigned char *current_position = buf;
|
||||
unsigned long flags;
|
||||
int status;
|
||||
int i;
|
||||
int bytes_sent = 0;
|
||||
int transfer_size;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
while (count > 0) {
|
||||
|
||||
/* try to find a free urb in our list of them */
|
||||
urb = NULL;
|
||||
|
||||
spin_lock_irqsave (&write_urb_pool_lock, flags);
|
||||
|
||||
for (i = 0; i < NUM_URBS; ++i) {
|
||||
if (write_urb_pool[i]->status != -EINPROGRESS) {
|
||||
urb = write_urb_pool[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore (&write_urb_pool_lock, flags);
|
||||
|
||||
if (urb == NULL) {
|
||||
dbg("%s - no more free urbs", __FUNCTION__);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (urb->transfer_buffer == NULL) {
|
||||
urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC);
|
||||
if (urb->transfer_buffer == NULL) {
|
||||
dev_err(&port->dev, "%s no more kernel memory...\n", __FUNCTION__);
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
|
||||
transfer_size = min (count, URB_TRANSFER_BUFFER_SIZE);
|
||||
|
||||
memcpy (urb->transfer_buffer, current_position, transfer_size);
|
||||
|
||||
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, urb->transfer_buffer);
|
||||
|
||||
/* build up our urb */
|
||||
usb_fill_bulk_urb (
|
||||
urb,
|
||||
serial->dev,
|
||||
usb_sndbulkpipe(serial->dev,
|
||||
port->bulk_out_endpointAddress),
|
||||
urb->transfer_buffer,
|
||||
transfer_size,
|
||||
empeg_write_bulk_callback,
|
||||
port);
|
||||
|
||||
/* send it down the pipe */
|
||||
status = usb_submit_urb(urb, GFP_ATOMIC);
|
||||
if (status) {
|
||||
dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __FUNCTION__, status);
|
||||
bytes_sent = status;
|
||||
break;
|
||||
}
|
||||
|
||||
current_position += transfer_size;
|
||||
bytes_sent += transfer_size;
|
||||
count -= transfer_size;
|
||||
bytes_out += transfer_size;
|
||||
|
||||
}
|
||||
|
||||
exit:
|
||||
return bytes_sent;
|
||||
|
||||
}
|
||||
|
||||
|
||||
static int empeg_write_room (struct usb_serial_port *port)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i;
|
||||
int room = 0;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
spin_lock_irqsave (&write_urb_pool_lock, flags);
|
||||
|
||||
/* tally up the number of bytes available */
|
||||
for (i = 0; i < NUM_URBS; ++i) {
|
||||
if (write_urb_pool[i]->status != -EINPROGRESS) {
|
||||
room += URB_TRANSFER_BUFFER_SIZE;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore (&write_urb_pool_lock, flags);
|
||||
|
||||
dbg("%s - returns %d", __FUNCTION__, room);
|
||||
|
||||
return (room);
|
||||
|
||||
}
|
||||
|
||||
|
||||
static int empeg_chars_in_buffer (struct usb_serial_port *port)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i;
|
||||
int chars = 0;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
spin_lock_irqsave (&write_urb_pool_lock, flags);
|
||||
|
||||
/* tally up the number of bytes waiting */
|
||||
for (i = 0; i < NUM_URBS; ++i) {
|
||||
if (write_urb_pool[i]->status == -EINPROGRESS) {
|
||||
chars += URB_TRANSFER_BUFFER_SIZE;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore (&write_urb_pool_lock, flags);
|
||||
|
||||
dbg("%s - returns %d", __FUNCTION__, chars);
|
||||
|
||||
return (chars);
|
||||
|
||||
}
|
||||
|
||||
|
||||
static void empeg_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
|
||||
{
|
||||
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
if (urb->status) {
|
||||
dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
|
||||
return;
|
||||
}
|
||||
|
||||
schedule_work(&port->work);
|
||||
}
|
||||
|
||||
|
||||
static void empeg_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
|
||||
{
|
||||
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
|
||||
struct tty_struct *tty;
|
||||
unsigned char *data = urb->transfer_buffer;
|
||||
int i;
|
||||
int result;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
if (urb->status) {
|
||||
dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
|
||||
return;
|
||||
}
|
||||
|
||||
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
|
||||
|
||||
tty = port->tty;
|
||||
|
||||
if (urb->actual_length) {
|
||||
for (i = 0; i < urb->actual_length ; ++i) {
|
||||
/* gb - 2000/11/13
|
||||
* If we insert too many characters we'll overflow the buffer.
|
||||
* This means we'll lose bytes - Decidedly bad.
|
||||
*/
|
||||
if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
|
||||
tty_flip_buffer_push(tty);
|
||||
}
|
||||
tty_insert_flip_char(tty, data[i], 0);
|
||||
}
|
||||
/* gb - 2000/11/13
|
||||
* Goes straight through instead of scheduling - if tty->low_latency is set.
|
||||
*/
|
||||
tty_flip_buffer_push(tty);
|
||||
bytes_in += urb->actual_length;
|
||||
}
|
||||
|
||||
/* Continue trying to always read */
|
||||
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,
|
||||
empeg_read_bulk_callback,
|
||||
port);
|
||||
|
||||
result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
|
||||
|
||||
if (result)
|
||||
dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
|
||||
|
||||
return;
|
||||
|
||||
}
|
||||
|
||||
|
||||
static void empeg_throttle (struct usb_serial_port *port)
|
||||
{
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
usb_kill_urb(port->read_urb);
|
||||
}
|
||||
|
||||
|
||||
static void empeg_unthrottle (struct usb_serial_port *port)
|
||||
{
|
||||
int result;
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
port->read_urb->dev = port->serial->dev;
|
||||
|
||||
result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
|
||||
|
||||
if (result)
|
||||
dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
static int empeg_startup (struct usb_serial *serial)
|
||||
{
|
||||
int r;
|
||||
|
||||
dbg("%s", __FUNCTION__);
|
||||
|
||||
if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
|
||||
err("active config #%d != 1 ??",
|
||||
serial->dev->actconfig->desc.bConfigurationValue);
|
||||
return -ENODEV;
|
||||
}
|
||||
dbg("%s - reset config", __FUNCTION__);
|
||||
r = usb_reset_configuration (serial->dev);
|
||||
|
||||
/* continue on with initialization */
|
||||
return r;
|
||||
|
||||
}
|
||||
|
||||
|
||||
static void empeg_shutdown (struct usb_serial *serial)
|
||||
{
|
||||
dbg ("%s", __FUNCTION__);
|
||||
}
|
||||
|
||||
|
||||
static int empeg_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
|
||||
|
||||
return -ENOIOCTLCMD;
|
||||
}
|
||||
|
||||
|
||||
static void empeg_set_termios (struct usb_serial_port *port, struct termios *old_termios)
|
||||
{
|
||||
|
||||
dbg("%s - port %d", __FUNCTION__, port->number);
|
||||
|
||||
if ((!port->tty) || (!port->tty->termios)) {
|
||||
dbg("%s - no tty structures", __FUNCTION__);
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* The empeg-car player wants these particular tty settings.
|
||||
* You could, for example, change the baud rate, however the
|
||||
* player only supports 115200 (currently), so there is really
|
||||
* no point in support for changes to the tty settings.
|
||||
* (at least for now)
|
||||
*
|
||||
* The default requirements for this device are:
|
||||
*/
|
||||
port->tty->termios->c_iflag
|
||||
&= ~(IGNBRK /* disable ignore break */
|
||||
| BRKINT /* disable break causes interrupt */
|
||||
| PARMRK /* disable mark parity errors */
|
||||
| ISTRIP /* disable clear high bit of input characters */
|
||||
| INLCR /* disable translate NL to CR */
|
||||
| IGNCR /* disable ignore CR */
|
||||
| ICRNL /* disable translate CR to NL */
|
||||
| IXON); /* disable enable XON/XOFF flow control */
|
||||
|
||||
port->tty->termios->c_oflag
|
||||
&= ~OPOST; /* disable postprocess output characters */
|
||||
|
||||
port->tty->termios->c_lflag
|
||||
&= ~(ECHO /* disable echo input characters */
|
||||
| ECHONL /* disable echo new line */
|
||||
| ICANON /* disable erase, kill, werase, and rprnt special characters */
|
||||
| ISIG /* disable interrupt, quit, and suspend special characters */
|
||||
| IEXTEN); /* disable non-POSIX special characters */
|
||||
|
||||
port->tty->termios->c_cflag
|
||||
&= ~(CSIZE /* no size */
|
||||
| PARENB /* disable parity bit */
|
||||
| CBAUD); /* clear current baud rate */
|
||||
|
||||
port->tty->termios->c_cflag
|
||||
|= (CS8 /* character size 8 bits */
|
||||
| B115200); /* baud rate 115200 */
|
||||
|
||||
/*
|
||||
* Force low_latency on; otherwise the pushes are scheduled;
|
||||
* this is bad as it opens up the possibility of dropping bytes
|
||||
* on the floor. We don't want to drop bytes on the floor. :)
|
||||
*/
|
||||
port->tty->low_latency = 1;
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
static int __init empeg_init (void)
|
||||
{
|
||||
struct urb *urb;
|
||||
int i, retval;
|
||||
|
||||
/* create our write urb pool and transfer buffers */
|
||||
spin_lock_init (&write_urb_pool_lock);
|
||||
for (i = 0; i < NUM_URBS; ++i) {
|
||||
urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
write_urb_pool[i] = urb;
|
||||
if (urb == NULL) {
|
||||
err("No more urbs???");
|
||||
continue;
|
||||
}
|
||||
|
||||
urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
|
||||
if (!urb->transfer_buffer) {
|
||||
err("%s - out of memory for urb buffers.",
|
||||
__FUNCTION__);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
retval = usb_serial_register(&empeg_device);
|
||||
if (retval)
|
||||
goto failed_usb_serial_register;
|
||||
retval = usb_register(&empeg_driver);
|
||||
if (retval)
|
||||
goto failed_usb_register;
|
||||
|
||||
info(DRIVER_VERSION ":" DRIVER_DESC);
|
||||
|
||||
return 0;
|
||||
failed_usb_register:
|
||||
usb_serial_deregister(&empeg_device);
|
||||
failed_usb_serial_register:
|
||||
for (i = 0; i < NUM_URBS; ++i) {
|
||||
if (write_urb_pool[i]) {
|
||||
if (write_urb_pool[i]->transfer_buffer)
|
||||
kfree(write_urb_pool[i]->transfer_buffer);
|
||||
usb_free_urb(write_urb_pool[i]);
|
||||
}
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
||||
static void __exit empeg_exit (void)
|
||||
{
|
||||
int i;
|
||||
unsigned long flags;
|
||||
|
||||
usb_deregister(&empeg_driver);
|
||||
usb_serial_deregister (&empeg_device);
|
||||
|
||||
spin_lock_irqsave (&write_urb_pool_lock, flags);
|
||||
|
||||
for (i = 0; i < NUM_URBS; ++i) {
|
||||
if (write_urb_pool[i]) {
|
||||
/* FIXME - uncomment the following usb_kill_urb call when
|
||||
* the host controllers get fixed to set urb->dev = NULL after
|
||||
* the urb is finished. Otherwise this call oopses. */
|
||||
/* usb_kill_urb(write_urb_pool[i]); */
|
||||
if (write_urb_pool[i]->transfer_buffer)
|
||||
kfree(write_urb_pool[i]->transfer_buffer);
|
||||
usb_free_urb (write_urb_pool[i]);
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore (&write_urb_pool_lock, flags);
|
||||
}
|
||||
|
||||
|
||||
module_init(empeg_init);
|
||||
module_exit(empeg_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");
|
||||
Reference in New Issue
Block a user