Merge to kernel-2.6.20-1.2949.fc6.vs2.2.0.1

[linux-2.6.git] / drivers / char / watchdog / wdt.c

diff --git a/drivers/char/watchdog/wdt.c b/drivers/char/watchdog/wdt.c
index 407690b..517fbd8 100644 (file)
--- a/drivers/char/watchdog/wdt.c
+++ b/drivers/char/watchdog/wdt.c
@@ -31,7 +31,6 @@
  *             Matt Domsch     :       Added nowayout module option
  */
 
-#include <linux/config.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
@@ -63,12 +62,7 @@ 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) ")");
 
-#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)");
 
@@ -231,14 +225,13 @@ static int wdt_get_temperature(int *temperature)
  *     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)
+static irqreturn_t wdt_interrupt(int irq, void *dev_id)
 {
        /*
         *      Read the status register see what is up and
@@ -266,7 +259,7 @@ static irqreturn_t wdt_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                printk(KERN_CRIT "Would Reboot.\n");
 #else
                printk(KERN_CRIT "Initiating system reboot.\n");
-               machine_restart(NULL);
+               emergency_restart();
 #endif
 #else
                printk(KERN_CRIT "Reset in 5ms.\n");
@@ -288,10 +281,6 @@ static irqreturn_t wdt_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 
 static ssize_t wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
-       /*  Can't seek (pwrite) on this device  */
-       if (ppos != &file->f_pos)
-               return -ESPIPE;
-
        if(count) {
                if (!nowayout) {
                        size_t i;
@@ -351,7 +340,7 @@ static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
        switch(cmd)
        {
                default:
-                       return -ENOIOCTLCMD;
+                       return -ENOTTY;
                case WDIOC_GETSUPPORT:
                        return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
 
@@ -397,7 +386,7 @@ static int wdt_open(struct inode *inode, struct file *file)
         *      Activate
         */
        wdt_start();
-       return 0;
+       return nonseekable_open(inode, file);
 }
 
 /**
@@ -441,10 +430,6 @@ static ssize_t wdt_temp_read(struct file *file, char __user *buf, size_t count,
 {
        int temperature;
 
-       /*  Can't seek (pread) on this device  */
-       if (ptr != &file->f_pos)
-               return -ESPIPE;
-
        if (wdt_get_temperature(&temperature))
                return -EFAULT;
 
@@ -464,7 +449,7 @@ static ssize_t wdt_temp_read(struct file *file, char __user *buf, size_t count,
 
 static int wdt_temp_open(struct inode *inode, struct file *file)
 {
-       return 0;
+       return nonseekable_open(inode, file);
 }
 
 /**
@@ -508,7 +493,7 @@ static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
  */
 
 
-static struct file_operations wdt_fops = {
+static const struct file_operations wdt_fops = {
        .owner          = THIS_MODULE,
        .llseek         = no_llseek,
        .write          = wdt_write,
@@ -524,7 +509,7 @@ static struct miscdevice wdt_miscdev = {
 };
 
 #ifdef CONFIG_WDT_501
-static struct file_operations wdt_temp_fops = {
+static const struct file_operations wdt_temp_fops = {
        .owner          = THIS_MODULE,
        .llseek         = no_llseek,
        .read           = wdt_temp_read,
@@ -594,7 +579,7 @@ static int __init wdt_init(void)
                goto out;
        }
 
-       ret = request_irq(irq, wdt_interrupt, SA_INTERRUPT, "wdt501p", NULL);
+       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;