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path: root/drivers/watchdog/alim1535_wdt.c
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Diffstat (limited to 'drivers/watchdog/alim1535_wdt.c')
-rw-r--r--drivers/watchdog/alim1535_wdt.c189
1 files changed, 92 insertions, 97 deletions
diff --git a/drivers/watchdog/alim1535_wdt.c b/drivers/watchdog/alim1535_wdt.c
index 2b1fbdb2fcf7..2a7690ecf97d 100644
--- a/drivers/watchdog/alim1535_wdt.c
+++ b/drivers/watchdog/alim1535_wdt.c
@@ -18,9 +18,8 @@
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/pci.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#define WATCHDOG_NAME "ALi_M1535"
#define PFX WATCHDOG_NAME ": "
@@ -30,17 +29,21 @@
static unsigned long ali_is_open;
static char ali_expect_release;
static struct pci_dev *ali_pci;
-static u32 ali_timeout_bits; /* stores the computed timeout */
+static u32 ali_timeout_bits; /* stores the computed timeout */
static DEFINE_SPINLOCK(ali_lock); /* Guards the hardware */
/* module parameters */
static int timeout = WATCHDOG_TIMEOUT;
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (0<timeout<18000, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (0 < timeout < 18000, default="
+ __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* ali_start - start watchdog countdown
@@ -103,15 +106,16 @@ static void ali_keepalive(void)
static int ali_settimer(int t)
{
- if(t < 0)
+ if (t < 0)
return -EINVAL;
- else if(t < 60)
+ else if (t < 60)
ali_timeout_bits = t|(1<<6);
- else if(t < 3600)
+ else if (t < 3600)
ali_timeout_bits = (t/60)|(1<<7);
- else if(t < 18000)
+ else if (t < 18000)
ali_timeout_bits = (t/300)|(1<<6)|(1<<7);
- else return -EINVAL;
+ else
+ return -EINVAL;
timeout = t;
return 0;
@@ -134,21 +138,22 @@ static int ali_settimer(int t)
*/
static ssize_t ali_write(struct file *file, const char __user *data,
- size_t len, loff_t * ppos)
+ size_t len, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
if (len) {
if (!nowayout) {
size_t i;
- /* note: just in case someone wrote the magic character
- * five months ago... */
+ /* note: just in case someone wrote the
+ magic character five months ago... */
ali_expect_release = 0;
- /* scan to see whether or not we got the magic character */
+ /* scan to see whether or not we got
+ the magic character */
for (i = 0; i != len; i++) {
char c;
- if(get_user(c, data+i))
+ if (get_user(c, data + i))
return -EFAULT;
if (c == 'V')
ali_expect_release = 42;
@@ -163,7 +168,6 @@ static ssize_t ali_write(struct file *file, const char __user *data,
/*
* ali_ioctl - handle watchdog ioctls
- * @inode: VFS inode
* @file: VFS file pointer
* @cmd: ioctl number
* @arg: arguments to the ioctl
@@ -172,8 +176,7 @@ static ssize_t ali_write(struct file *file, const char __user *data,
* we want an extension to enable irq ack monitoring and the like
*/
-static int ali_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
@@ -186,57 +189,45 @@ static int ali_ioctl(struct inode *inode, struct file *file,
};
switch (cmd) {
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident,
- sizeof (ident)) ? -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_KEEPALIVE:
- ali_keepalive();
- return 0;
-
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if (get_user (new_options, p))
- return -EFAULT;
-
- if (new_options & WDIOS_DISABLECARD) {
- ali_stop();
- retval = 0;
- }
-
- if (new_options & WDIOS_ENABLECARD) {
- ali_start();
- retval = 0;
- }
-
- return retval;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_SETOPTIONS:
+ {
+ int new_options, retval = -EINVAL;
+
+ if (get_user(new_options, p))
+ return -EFAULT;
+ if (new_options & WDIOS_DISABLECARD) {
+ ali_stop();
+ retval = 0;
}
-
- case WDIOC_SETTIMEOUT:
- {
- int new_timeout;
-
- if (get_user(new_timeout, p))
- return -EFAULT;
-
- if (ali_settimer(new_timeout))
- return -EINVAL;
-
- ali_keepalive();
- /* Fall */
+ if (new_options & WDIOS_ENABLECARD) {
+ ali_start();
+ retval = 0;
}
-
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
-
- default:
- return -ENOTTY;
+ return retval;
+ }
+ case WDIOC_KEEPALIVE:
+ ali_keepalive();
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ if (ali_settimer(new_timeout))
+ return -EINVAL;
+ ali_keepalive();
+ /* Fall */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
+ default:
+ return -ENOTTY;
}
}
@@ -274,10 +265,11 @@ static int ali_release(struct inode *inode, struct file *file)
/*
* Shut off the timer.
*/
- if (ali_expect_release == 42) {
+ if (ali_expect_release == 42)
ali_stop();
- } else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
ali_keepalive();
}
clear_bit(0, &ali_is_open);
@@ -292,13 +284,11 @@ static int ali_release(struct inode *inode, struct file *file)
*/
-static int ali_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int ali_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
{
- if (code==SYS_DOWN || code==SYS_HALT) {
- /* Turn the WDT off */
- ali_stop();
- }
-
+ if (code == SYS_DOWN || code == SYS_HALT)
+ ali_stop(); /* Turn the WDT off */
return NOTIFY_DONE;
}
@@ -340,10 +330,10 @@ static int __init ali_find_watchdog(void)
/* Check for the a 7101 PMU */
pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
- if(pdev == NULL)
+ if (pdev == NULL)
return -ENODEV;
- if(pci_enable_device(pdev)) {
+ if (pci_enable_device(pdev)) {
pci_dev_put(pdev);
return -EIO;
}
@@ -355,9 +345,12 @@ static int __init ali_find_watchdog(void)
*/
pci_read_config_dword(pdev, 0xCC, &wdog);
- wdog &= ~0x3F; /* Timer bits */
- wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24)); /* Issued events */
- wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)); /* No monitor bits */
+ /* Timer bits */
+ wdog &= ~0x3F;
+ /* Issued events */
+ wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));
+ /* No monitor bits */
+ wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));
pci_write_config_dword(pdev, 0xCC, wdog);
@@ -369,12 +362,12 @@ static int __init ali_find_watchdog(void)
*/
static const struct file_operations ali_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = ali_write,
- .ioctl = ali_ioctl,
- .open = ali_open,
- .release = ali_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = ali_write,
+ .unlocked_ioctl = ali_ioctl,
+ .open = ali_open,
+ .release = ali_release,
};
static struct miscdevice ali_miscdev = {
@@ -399,15 +392,16 @@ static int __init watchdog_init(void)
int ret;
/* Check whether or not the hardware watchdog is there */
- if (ali_find_watchdog() != 0) {
+ if (ali_find_watchdog() != 0)
return -ENODEV;
- }
- /* Check that the timeout value is within it's range ; if not reset to the default */
+ /* Check that the timeout value is within it's range;
+ if not reset to the default */
if (timeout < 1 || timeout >= 18000) {
timeout = WATCHDOG_TIMEOUT;
- printk(KERN_INFO PFX "timeout value must be 0<timeout<18000, using %d\n",
- timeout);
+ printk(KERN_INFO PFX
+ "timeout value must be 0 < timeout < 18000, using %d\n",
+ timeout);
}
/* Calculate the watchdog's timeout */
@@ -415,15 +409,16 @@ static int __init watchdog_init(void)
ret = register_reboot_notifier(&ali_notifier);
if (ret != 0) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
goto out;
}
ret = misc_register(&ali_miscdev);
if (ret != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 21:09:46 +0300