#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
+#include <linux/jiffies.h>
#include <asm/io.h>
#include <asm/uaccess.h>
module_param(timeout, int, 0);
MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
-#ifdef CONFIG_WATCHDOG_NOWAYOUT
-static int nowayout = 1;
-#else
-static int nowayout = 0;
-#endif
-
+static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
#define WDT_WRST_ENB 0x4000 /* [14] Watchdog Timer Reset Enable */
#define WDT_ENB 0x8000 /* [15] Watchdog Timer Enable */
-static __u16 *wdtmrctl;
+static __u16 __iomem *wdtmrctl;
static void wdt_timer_ping(unsigned long);
static struct timer_list timer;
* /dev/watchdog handling
*/
-static ssize_t fop_write(struct file * file, const char * buf, size_t count, loff_t * ppos)
+static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
{
- /* We can't seek */
- if(ppos != &file->f_pos)
- return -ESPIPE;
-
/* See if we got the magic character 'V' and reload the timer */
if(count) {
if (!nowayout) {
static int fop_open(struct inode * inode, struct file * file)
{
+ nonseekable_open(inode, file);
+
/* Just in case we're already talking to someone... */
if(test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
+ void __user *argp = (void __user *)arg;
+ int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
.firmware_version = 1,
switch(cmd)
{
default:
- return -ENOIOCTLCMD;
+ return -ENOTTY;
case WDIOC_GETSUPPORT:
- return copy_to_user((struct watchdog_info *)arg, &ident, sizeof(ident))?-EFAULT:0;
+ return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- return put_user(0, (int *)arg);
+ return put_user(0, p);
case WDIOC_KEEPALIVE:
wdt_keepalive();
return 0;
{
int new_options, retval = -EINVAL;
- if(get_user(new_options, (int *)arg))
+ if(get_user(new_options, p))
return -EFAULT;
if(new_options & WDIOS_DISABLECARD) {
{
int new_timeout;
- if(get_user(new_timeout, (int *)arg))
+ if(get_user(new_timeout, p))
return -EFAULT;
if(wdt_set_heartbeat(new_timeout))
/* Fall through */
}
case WDIOC_GETTIMEOUT:
- return put_user(timeout, (int *)arg);
+ return put_user(timeout, p);
}
}
-static struct file_operations wdt_fops = {
+static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = fop_write,