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[WATCHDOG 22/57] ixp4xx_wdt: unlocked_ioctl

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Review and switch to unlocked_ioctl

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Alan Cox 2008-05-19 14:06:48 +01:00 committed by Wim Van Sebroeck
parent 640b4f6857
commit 20d35f3e50
1 changed files with 17 additions and 24 deletions
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41
drivers/watchdog/ixp4xx_wdt.c
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@ -30,40 +30,40 @@ static int nowayout = WATCHDOG_NOWAYOUT;
static int heartbeat = 60; /* (secs) Default is 1 minute */
static unsigned long wdt_status;
static unsigned long boot_status;
static spin_lock_t wdt_lock;
#define WDT_TICK_RATE (IXP4XX_PERIPHERAL_BUS_CLOCK * 1000000UL)
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
static void
wdt_enable(void)
static void wdt_enable(void)
{
spin_lock(&wdt_lock);
*IXP4XX_OSWK = IXP4XX_WDT_KEY;
*IXP4XX_OSWE = 0;
*IXP4XX_OSWT = WDT_TICK_RATE * heartbeat;
*IXP4XX_OSWE = IXP4XX_WDT_COUNT_ENABLE | IXP4XX_WDT_RESET_ENABLE;
*IXP4XX_OSWK = 0;
spin_unlock(&wdt_lock);
}
static void
wdt_disable(void)
static void wdt_disable(void)
{
spin_lock(&wdt_lock);
*IXP4XX_OSWK = IXP4XX_WDT_KEY;
*IXP4XX_OSWE = 0;
*IXP4XX_OSWK = 0;
spin_unlock(&wdt_lock);
}
static int
ixp4xx_wdt_open(struct inode *inode, struct file *file)
static int ixp4xx_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(WDT_IN_USE, &wdt_status))
return -EBUSY;
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
wdt_enable();
return nonseekable_open(inode, file);
}
@ -87,7 +87,6 @@ ixp4xx_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
}
wdt_enable();
}
return len;
}
@ -98,9 +97,8 @@ static struct watchdog_info ident = {
};
static int
ixp4xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
static long ixp4xx_wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int ret = -ENOTTY;
int time;
@ -145,16 +143,13 @@ ixp4xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
return ret;
}
static int
ixp4xx_wdt_release(struct inode *inode, struct file *file)
static int ixp4xx_wdt_release(struct inode *inode, struct file *file)
{
if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) {
if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
wdt_disable();
} else {
else
printk(KERN_CRIT "WATCHDOG: Device closed unexpectedly - "
"timer will not stop\n");
}
clear_bit(WDT_IN_USE, &wdt_status);
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
@ -167,7 +162,7 @@ static const struct file_operations ixp4xx_wdt_fops =
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ixp4xx_wdt_write,
.ioctl = ixp4xx_wdt_ioctl,
.unlocked_ioctl = ixp4xx_wdt_ioctl,
.open = ixp4xx_wdt_open,
.release = ixp4xx_wdt_release,
};
@ -191,14 +186,12 @@ static int __init ixp4xx_wdt_init(void)
return -ENODEV;
}
spin_lock_init(&wdt_lock);
boot_status = (*IXP4XX_OSST & IXP4XX_OSST_TIMER_WARM_RESET) ?
WDIOF_CARDRESET : 0;
ret = misc_register(&ixp4xx_wdt_miscdev);
if (ret == 0)
printk("IXP4xx Watchdog Timer: heartbeat %d sec\n", heartbeat);
boot_status = (*IXP4XX_OSST & IXP4XX_OSST_TIMER_WARM_RESET) ?
WDIOF_CARDRESET : 0;
return ret;
}