62322d2554
Mark the static struct file_operations in drivers/char as const. Making them const prevents accidental bugs, and moves them to the .rodata section so that they no longer do any false sharing; in addition with the proper debug option they are then protected against corruption.. [akpm@osdl.org: build fix] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
641 lines
15 KiB
C
641 lines
15 KiB
C
/*
|
|
* Industrial Computer Source WDT500/501 driver
|
|
*
|
|
* (c) Copyright 1996-1997 Alan Cox <alan@redhat.com>, All Rights Reserved.
|
|
* http://www.redhat.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; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
* Neither Alan Cox nor CymruNet Ltd. admit liability nor provide
|
|
* warranty for any of this software. This material is provided
|
|
* "AS-IS" and at no charge.
|
|
*
|
|
* (c) Copyright 1995 Alan Cox <alan@lxorguk.ukuu.org.uk>
|
|
*
|
|
* Release 0.10.
|
|
*
|
|
* Fixes
|
|
* Dave Gregorich : Modularisation and minor bugs
|
|
* Alan Cox : Added the watchdog ioctl() stuff
|
|
* Alan Cox : Fixed the reboot problem (as noted by
|
|
* Matt Crocker).
|
|
* Alan Cox : Added wdt= boot option
|
|
* Alan Cox : Cleaned up copy/user stuff
|
|
* Tim Hockin : Added insmod parameters, comment cleanup
|
|
* Parameterized timeout
|
|
* Tigran Aivazian : Restructured wdt_init() to handle failures
|
|
* Joel Becker : Added WDIOC_GET/SETTIMEOUT
|
|
* Matt Domsch : Added nowayout module option
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/types.h>
|
|
#include <linux/miscdevice.h>
|
|
#include <linux/watchdog.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/notifier.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/system.h>
|
|
#include "wd501p.h"
|
|
|
|
static unsigned long wdt_is_open;
|
|
static char expect_close;
|
|
|
|
/*
|
|
* Module parameters
|
|
*/
|
|
|
|
#define WD_TIMO 60 /* Default heartbeat = 60 seconds */
|
|
|
|
static int heartbeat = WD_TIMO;
|
|
static int wd_heartbeat;
|
|
module_param(heartbeat, int, 0);
|
|
MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WD_TIMO) ")");
|
|
|
|
static int nowayout = WATCHDOG_NOWAYOUT;
|
|
module_param(nowayout, int, 0);
|
|
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
|
|
|
|
/* You must set these - there is no sane way to probe for this board. */
|
|
static int io=0x240;
|
|
static int irq=11;
|
|
|
|
module_param(io, int, 0);
|
|
MODULE_PARM_DESC(io, "WDT io port (default=0x240)");
|
|
module_param(irq, int, 0);
|
|
MODULE_PARM_DESC(irq, "WDT irq (default=11)");
|
|
|
|
#ifdef CONFIG_WDT_501
|
|
/* Support for the Fan Tachometer on the WDT501-P */
|
|
static int tachometer;
|
|
|
|
module_param(tachometer, int, 0);
|
|
MODULE_PARM_DESC(tachometer, "WDT501-P Fan Tachometer support (0=disable, default=0)");
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
/*
|
|
* Programming support
|
|
*/
|
|
|
|
static void wdt_ctr_mode(int ctr, int mode)
|
|
{
|
|
ctr<<=6;
|
|
ctr|=0x30;
|
|
ctr|=(mode<<1);
|
|
outb_p(ctr, WDT_CR);
|
|
}
|
|
|
|
static void wdt_ctr_load(int ctr, int val)
|
|
{
|
|
outb_p(val&0xFF, WDT_COUNT0+ctr);
|
|
outb_p(val>>8, WDT_COUNT0+ctr);
|
|
}
|
|
|
|
/**
|
|
* wdt_start:
|
|
*
|
|
* Start the watchdog driver.
|
|
*/
|
|
|
|
static int wdt_start(void)
|
|
{
|
|
inb_p(WDT_DC); /* Disable watchdog */
|
|
wdt_ctr_mode(0,3); /* Program CTR0 for Mode 3: Square Wave Generator */
|
|
wdt_ctr_mode(1,2); /* Program CTR1 for Mode 2: Rate Generator */
|
|
wdt_ctr_mode(2,0); /* Program CTR2 for Mode 0: Pulse on Terminal Count */
|
|
wdt_ctr_load(0, 8948); /* Count at 100Hz */
|
|
wdt_ctr_load(1,wd_heartbeat); /* Heartbeat */
|
|
wdt_ctr_load(2,65535); /* Length of reset pulse */
|
|
outb_p(0, WDT_DC); /* Enable watchdog */
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* wdt_stop:
|
|
*
|
|
* Stop the watchdog driver.
|
|
*/
|
|
|
|
static int wdt_stop (void)
|
|
{
|
|
/* Turn the card off */
|
|
inb_p(WDT_DC); /* Disable watchdog */
|
|
wdt_ctr_load(2,0); /* 0 length reset pulses now */
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* wdt_ping:
|
|
*
|
|
* Reload counter one with the watchdog heartbeat. We don't bother reloading
|
|
* the cascade counter.
|
|
*/
|
|
|
|
static int wdt_ping(void)
|
|
{
|
|
/* Write a watchdog value */
|
|
inb_p(WDT_DC); /* Disable watchdog */
|
|
wdt_ctr_mode(1,2); /* Re-Program CTR1 for Mode 2: Rate Generator */
|
|
wdt_ctr_load(1,wd_heartbeat); /* Heartbeat */
|
|
outb_p(0, WDT_DC); /* Enable watchdog */
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* wdt_set_heartbeat:
|
|
* @t: the new heartbeat value that needs to be set.
|
|
*
|
|
* Set a new heartbeat value for the watchdog device. If the heartbeat value is
|
|
* incorrect we keep the old value and return -EINVAL. If successfull we
|
|
* return 0.
|
|
*/
|
|
static int wdt_set_heartbeat(int t)
|
|
{
|
|
if ((t < 1) || (t > 65535))
|
|
return -EINVAL;
|
|
|
|
heartbeat = t;
|
|
wd_heartbeat = t * 100;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* wdt_get_status:
|
|
* @status: the new status.
|
|
*
|
|
* Extract the status information from a WDT watchdog device. There are
|
|
* several board variants so we have to know which bits are valid. Some
|
|
* bits default to one and some to zero in order to be maximally painful.
|
|
*
|
|
* we then map the bits onto the status ioctl flags.
|
|
*/
|
|
|
|
static int wdt_get_status(int *status)
|
|
{
|
|
unsigned char new_status=inb_p(WDT_SR);
|
|
|
|
*status=0;
|
|
if (new_status & WDC_SR_ISOI0)
|
|
*status |= WDIOF_EXTERN1;
|
|
if (new_status & WDC_SR_ISII1)
|
|
*status |= WDIOF_EXTERN2;
|
|
#ifdef CONFIG_WDT_501
|
|
if (!(new_status & WDC_SR_TGOOD))
|
|
*status |= WDIOF_OVERHEAT;
|
|
if (!(new_status & WDC_SR_PSUOVER))
|
|
*status |= WDIOF_POWEROVER;
|
|
if (!(new_status & WDC_SR_PSUUNDR))
|
|
*status |= WDIOF_POWERUNDER;
|
|
if (tachometer) {
|
|
if (!(new_status & WDC_SR_FANGOOD))
|
|
*status |= WDIOF_FANFAULT;
|
|
}
|
|
#endif /* CONFIG_WDT_501 */
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_WDT_501
|
|
/**
|
|
* wdt_get_temperature:
|
|
*
|
|
* Reports the temperature in degrees Fahrenheit. The API is in
|
|
* farenheit. It was designed by an imperial measurement luddite.
|
|
*/
|
|
|
|
static int wdt_get_temperature(int *temperature)
|
|
{
|
|
unsigned short c=inb_p(WDT_RT);
|
|
|
|
*temperature = (c * 11 / 15) + 7;
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
/**
|
|
* wdt_interrupt:
|
|
* @irq: Interrupt number
|
|
* @dev_id: Unused as we don't allow multiple devices.
|
|
* @regs: Unused.
|
|
*
|
|
* Handle an interrupt from the board. These are raised when the status
|
|
* map changes in what the board considers an interesting way. That means
|
|
* a failure condition occurring.
|
|
*/
|
|
|
|
static irqreturn_t wdt_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
|
{
|
|
/*
|
|
* Read the status register see what is up and
|
|
* then printk it.
|
|
*/
|
|
unsigned char status=inb_p(WDT_SR);
|
|
|
|
printk(KERN_CRIT "WDT status %d\n", status);
|
|
|
|
#ifdef CONFIG_WDT_501
|
|
if (!(status & WDC_SR_TGOOD))
|
|
printk(KERN_CRIT "Overheat alarm.(%d)\n",inb_p(WDT_RT));
|
|
if (!(status & WDC_SR_PSUOVER))
|
|
printk(KERN_CRIT "PSU over voltage.\n");
|
|
if (!(status & WDC_SR_PSUUNDR))
|
|
printk(KERN_CRIT "PSU under voltage.\n");
|
|
if (tachometer) {
|
|
if (!(status & WDC_SR_FANGOOD))
|
|
printk(KERN_CRIT "Possible fan fault.\n");
|
|
}
|
|
#endif /* CONFIG_WDT_501 */
|
|
if (!(status & WDC_SR_WCCR))
|
|
#ifdef SOFTWARE_REBOOT
|
|
#ifdef ONLY_TESTING
|
|
printk(KERN_CRIT "Would Reboot.\n");
|
|
#else
|
|
printk(KERN_CRIT "Initiating system reboot.\n");
|
|
emergency_restart();
|
|
#endif
|
|
#else
|
|
printk(KERN_CRIT "Reset in 5ms.\n");
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
|
|
/**
|
|
* wdt_write:
|
|
* @file: file handle to the watchdog
|
|
* @buf: buffer to write (unused as data does not matter here
|
|
* @count: count of bytes
|
|
* @ppos: pointer to the position to write. No seeks allowed
|
|
*
|
|
* A write to a watchdog device is defined as a keepalive signal. Any
|
|
* write of data will do, as we we don't define content meaning.
|
|
*/
|
|
|
|
static ssize_t wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
|
|
{
|
|
if(count) {
|
|
if (!nowayout) {
|
|
size_t i;
|
|
|
|
/* In case it was set long ago */
|
|
expect_close = 0;
|
|
|
|
for (i = 0; i != count; i++) {
|
|
char c;
|
|
if (get_user(c, buf + i))
|
|
return -EFAULT;
|
|
if (c == 'V')
|
|
expect_close = 42;
|
|
}
|
|
}
|
|
wdt_ping();
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* wdt_ioctl:
|
|
* @inode: inode of the device
|
|
* @file: file handle to the device
|
|
* @cmd: watchdog command
|
|
* @arg: argument pointer
|
|
*
|
|
* The watchdog API defines a common set of functions for all watchdogs
|
|
* according to their available features. We only actually usefully support
|
|
* querying capabilities and current status.
|
|
*/
|
|
|
|
static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
void __user *argp = (void __user *)arg;
|
|
int __user *p = argp;
|
|
int new_heartbeat;
|
|
int status;
|
|
|
|
static struct watchdog_info ident = {
|
|
.options = WDIOF_SETTIMEOUT|
|
|
WDIOF_MAGICCLOSE|
|
|
WDIOF_KEEPALIVEPING,
|
|
.firmware_version = 1,
|
|
.identity = "WDT500/501",
|
|
};
|
|
|
|
/* Add options according to the card we have */
|
|
ident.options |= (WDIOF_EXTERN1|WDIOF_EXTERN2);
|
|
#ifdef CONFIG_WDT_501
|
|
ident.options |= (WDIOF_OVERHEAT|WDIOF_POWERUNDER|WDIOF_POWEROVER);
|
|
if (tachometer)
|
|
ident.options |= WDIOF_FANFAULT;
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
switch(cmd)
|
|
{
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
case WDIOC_GETSUPPORT:
|
|
return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
|
|
|
|
case WDIOC_GETSTATUS:
|
|
wdt_get_status(&status);
|
|
return put_user(status, p);
|
|
case WDIOC_GETBOOTSTATUS:
|
|
return put_user(0, p);
|
|
case WDIOC_KEEPALIVE:
|
|
wdt_ping();
|
|
return 0;
|
|
case WDIOC_SETTIMEOUT:
|
|
if (get_user(new_heartbeat, p))
|
|
return -EFAULT;
|
|
|
|
if (wdt_set_heartbeat(new_heartbeat))
|
|
return -EINVAL;
|
|
|
|
wdt_ping();
|
|
/* Fall */
|
|
case WDIOC_GETTIMEOUT:
|
|
return put_user(heartbeat, p);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* wdt_open:
|
|
* @inode: inode of device
|
|
* @file: file handle to device
|
|
*
|
|
* The watchdog device has been opened. The watchdog device is single
|
|
* open and on opening we load the counters. Counter zero is a 100Hz
|
|
* cascade, into counter 1 which downcounts to reboot. When the counter
|
|
* triggers counter 2 downcounts the length of the reset pulse which
|
|
* set set to be as long as possible.
|
|
*/
|
|
|
|
static int wdt_open(struct inode *inode, struct file *file)
|
|
{
|
|
if(test_and_set_bit(0, &wdt_is_open))
|
|
return -EBUSY;
|
|
/*
|
|
* Activate
|
|
*/
|
|
wdt_start();
|
|
return nonseekable_open(inode, file);
|
|
}
|
|
|
|
/**
|
|
* wdt_release:
|
|
* @inode: inode to board
|
|
* @file: file handle to board
|
|
*
|
|
* The watchdog has a configurable API. There is a religious dispute
|
|
* between people who want their watchdog to be able to shut down and
|
|
* those who want to be sure if the watchdog manager dies the machine
|
|
* reboots. In the former case we disable the counters, in the latter
|
|
* case you have to open it again very soon.
|
|
*/
|
|
|
|
static int wdt_release(struct inode *inode, struct file *file)
|
|
{
|
|
if (expect_close == 42) {
|
|
wdt_stop();
|
|
clear_bit(0, &wdt_is_open);
|
|
} else {
|
|
printk(KERN_CRIT "wdt: WDT device closed unexpectedly. WDT will not stop!\n");
|
|
wdt_ping();
|
|
}
|
|
expect_close = 0;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_WDT_501
|
|
/**
|
|
* wdt_temp_read:
|
|
* @file: file handle to the watchdog board
|
|
* @buf: buffer to write 1 byte into
|
|
* @count: length of buffer
|
|
* @ptr: offset (no seek allowed)
|
|
*
|
|
* Temp_read reports the temperature in degrees Fahrenheit. The API is in
|
|
* farenheit. It was designed by an imperial measurement luddite.
|
|
*/
|
|
|
|
static ssize_t wdt_temp_read(struct file *file, char __user *buf, size_t count, loff_t *ptr)
|
|
{
|
|
int temperature;
|
|
|
|
if (wdt_get_temperature(&temperature))
|
|
return -EFAULT;
|
|
|
|
if (copy_to_user (buf, &temperature, 1))
|
|
return -EFAULT;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* wdt_temp_open:
|
|
* @inode: inode of device
|
|
* @file: file handle to device
|
|
*
|
|
* The temperature device has been opened.
|
|
*/
|
|
|
|
static int wdt_temp_open(struct inode *inode, struct file *file)
|
|
{
|
|
return nonseekable_open(inode, file);
|
|
}
|
|
|
|
/**
|
|
* wdt_temp_release:
|
|
* @inode: inode to board
|
|
* @file: file handle to board
|
|
*
|
|
* The temperature device has been closed.
|
|
*/
|
|
|
|
static int wdt_temp_release(struct inode *inode, struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
/**
|
|
* notify_sys:
|
|
* @this: our notifier block
|
|
* @code: the event being reported
|
|
* @unused: unused
|
|
*
|
|
* Our notifier is called on system shutdowns. We want to turn the card
|
|
* off at reboot otherwise the machine will reboot again during memory
|
|
* test or worse yet during the following fsck. This would suck, in fact
|
|
* trust me - if it happens it does suck.
|
|
*/
|
|
|
|
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
|
|
void *unused)
|
|
{
|
|
if(code==SYS_DOWN || code==SYS_HALT) {
|
|
/* Turn the card off */
|
|
wdt_stop();
|
|
}
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
/*
|
|
* Kernel Interfaces
|
|
*/
|
|
|
|
|
|
static const struct file_operations wdt_fops = {
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.write = wdt_write,
|
|
.ioctl = wdt_ioctl,
|
|
.open = wdt_open,
|
|
.release = wdt_release,
|
|
};
|
|
|
|
static struct miscdevice wdt_miscdev = {
|
|
.minor = WATCHDOG_MINOR,
|
|
.name = "watchdog",
|
|
.fops = &wdt_fops,
|
|
};
|
|
|
|
#ifdef CONFIG_WDT_501
|
|
static const struct file_operations wdt_temp_fops = {
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.read = wdt_temp_read,
|
|
.open = wdt_temp_open,
|
|
.release = wdt_temp_release,
|
|
};
|
|
|
|
static struct miscdevice temp_miscdev = {
|
|
.minor = TEMP_MINOR,
|
|
.name = "temperature",
|
|
.fops = &wdt_temp_fops,
|
|
};
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
/*
|
|
* The WDT card needs to learn about soft shutdowns in order to
|
|
* turn the timebomb registers off.
|
|
*/
|
|
|
|
static struct notifier_block wdt_notifier = {
|
|
.notifier_call = wdt_notify_sys,
|
|
};
|
|
|
|
/**
|
|
* cleanup_module:
|
|
*
|
|
* Unload the watchdog. You cannot do this with any file handles open.
|
|
* If your watchdog is set to continue ticking on close and you unload
|
|
* it, well it keeps ticking. We won't get the interrupt but the board
|
|
* will not touch PC memory so all is fine. You just have to load a new
|
|
* module in 60 seconds or reboot.
|
|
*/
|
|
|
|
static void __exit wdt_exit(void)
|
|
{
|
|
misc_deregister(&wdt_miscdev);
|
|
#ifdef CONFIG_WDT_501
|
|
misc_deregister(&temp_miscdev);
|
|
#endif /* CONFIG_WDT_501 */
|
|
unregister_reboot_notifier(&wdt_notifier);
|
|
free_irq(irq, NULL);
|
|
release_region(io,8);
|
|
}
|
|
|
|
/**
|
|
* wdt_init:
|
|
*
|
|
* Set up the WDT watchdog board. All we have to do is grab the
|
|
* resources we require and bitch if anyone beat us to them.
|
|
* The open() function will actually kick the board off.
|
|
*/
|
|
|
|
static int __init wdt_init(void)
|
|
{
|
|
int ret;
|
|
|
|
/* Check that the heartbeat value is within it's range ; if not reset to the default */
|
|
if (wdt_set_heartbeat(heartbeat)) {
|
|
wdt_set_heartbeat(WD_TIMO);
|
|
printk(KERN_INFO "wdt: heartbeat value must be 0<heartbeat<65536, using %d\n",
|
|
WD_TIMO);
|
|
}
|
|
|
|
if (!request_region(io, 8, "wdt501p")) {
|
|
printk(KERN_ERR "wdt: I/O address 0x%04x already in use\n", io);
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
ret = request_irq(irq, wdt_interrupt, IRQF_DISABLED, "wdt501p", NULL);
|
|
if(ret) {
|
|
printk(KERN_ERR "wdt: IRQ %d is not free.\n", irq);
|
|
goto outreg;
|
|
}
|
|
|
|
ret = register_reboot_notifier(&wdt_notifier);
|
|
if(ret) {
|
|
printk(KERN_ERR "wdt: cannot register reboot notifier (err=%d)\n", ret);
|
|
goto outirq;
|
|
}
|
|
|
|
#ifdef CONFIG_WDT_501
|
|
ret = misc_register(&temp_miscdev);
|
|
if (ret) {
|
|
printk(KERN_ERR "wdt: cannot register miscdev on minor=%d (err=%d)\n",
|
|
TEMP_MINOR, ret);
|
|
goto outrbt;
|
|
}
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
ret = misc_register(&wdt_miscdev);
|
|
if (ret) {
|
|
printk(KERN_ERR "wdt: cannot register miscdev on minor=%d (err=%d)\n",
|
|
WATCHDOG_MINOR, ret);
|
|
goto outmisc;
|
|
}
|
|
|
|
ret = 0;
|
|
printk(KERN_INFO "WDT500/501-P driver 0.10 at 0x%04x (Interrupt %d). heartbeat=%d sec (nowayout=%d)\n",
|
|
io, irq, heartbeat, nowayout);
|
|
#ifdef CONFIG_WDT_501
|
|
printk(KERN_INFO "wdt: Fan Tachometer is %s\n", (tachometer ? "Enabled" : "Disabled"));
|
|
#endif /* CONFIG_WDT_501 */
|
|
|
|
out:
|
|
return ret;
|
|
|
|
outmisc:
|
|
#ifdef CONFIG_WDT_501
|
|
misc_deregister(&temp_miscdev);
|
|
outrbt:
|
|
#endif /* CONFIG_WDT_501 */
|
|
unregister_reboot_notifier(&wdt_notifier);
|
|
outirq:
|
|
free_irq(irq, NULL);
|
|
outreg:
|
|
release_region(io,8);
|
|
goto out;
|
|
}
|
|
|
|
module_init(wdt_init);
|
|
module_exit(wdt_exit);
|
|
|
|
MODULE_AUTHOR("Alan Cox");
|
|
MODULE_DESCRIPTION("Driver for ISA ICS watchdog cards (WDT500/501)");
|
|
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
|
|
MODULE_ALIAS_MISCDEV(TEMP_MINOR);
|
|
MODULE_LICENSE("GPL");
|