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[WATCHDOG] ib700_wdt.c stop + set_heartbeat operations 

move the code to stop the watchdog and the code to
set the heartbeat of the watchdog to seperate functions.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
hifive-unleashed-5.1
Wim Van Sebroeck 2007-01-27 21:50:53 +01:00
parent bffda5c87c
commit 35d55c9431
1 changed files with 30 additions and 9 deletions
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39
drivers/char/watchdog/ib700wdt.c
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@ -122,7 +122,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" _
/*
* Kernel methods.
* Watchdog Operations
*/
static void
@ -132,6 +132,31 @@ ibwdt_ping(void)
outb_p(wd_margin, WDT_START);
}
static void
ibwdt_disable(void)
{
outb_p(0, WDT_STOP);
}
static int
ibwdt_set_heartbeat(int t)
{
int i;
if ((t < 0) || (t > 30))
return -EINVAL;
for (i = 0x0F; i > -1; i--)
if (wd_times[i] > t)
break;
wd_margin = i;
return 0;
}
/*
* /dev/watchdog handling
*/
static ssize_t
ibwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
@ -159,7 +184,7 @@ static int
ibwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
int i, new_margin;
int new_margin;
void __user *argp = (void __user *)arg;
int __user *p = argp;
@ -185,12 +210,8 @@ ibwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
case WDIOC_SETTIMEOUT:
if (get_user(new_margin, p))
return -EFAULT;
if ((new_margin < 0) || (new_margin > 30))
if (ibwdt_set_heartbeat(new_margin))
return -EINVAL;
for (i = 0x0F; i > -1; i--)
if (wd_times[i] > new_margin)
break;
wd_margin = i;
ibwdt_ping();
/* Fall */
@ -226,7 +247,7 @@ ibwdt_close(struct inode *inode, struct file *file)
{
spin_lock(&ibwdt_lock);
if (expect_close == 42)
outb_p(0, WDT_STOP);
ibwdt_disable();
else
printk(KERN_CRIT PFX "WDT device closed unexpectedly. WDT will not stop!\n");
@ -246,7 +267,7 @@ ibwdt_notify_sys(struct notifier_block *this, unsigned long code,
{
if (code == SYS_DOWN || code == SYS_HALT) {
/* Turn the WDT off */
outb_p(0, WDT_STOP);
ibwdt_disable();
}
return NOTIFY_DONE;
}