Merge current mainline tree into linux-omap tree

[linux-2.6-omap-h63xx.git] / drivers / watchdog / softdog.c

diff --git a/drivers/watchdog/softdog.c b/drivers/watchdog/softdog.c
index 9c3694909243e80c6877cde927722c260dd246c5..c650464c5c63d2f87720390d93e417f111a1f6ee 100644 (file)
--- a/drivers/watchdog/softdog.c
+++ b/drivers/watchdog/softdog.c
@@ -47,19 +47,22 @@
 #include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/jiffies.h>
-
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 #define PFX "SoftDog: "
 
 #define TIMER_MARGIN   60              /* Default is 60 seconds */
 static int soft_margin = TIMER_MARGIN; /* in seconds */
 module_param(soft_margin, int, 0);
-MODULE_PARM_DESC(soft_margin, "Watchdog soft_margin in seconds. (0<soft_margin<65536, default=" __MODULE_STRING(TIMER_MARGIN) ")");
+MODULE_PARM_DESC(soft_margin,
+       "Watchdog soft_margin in seconds. (0 < soft_margin < 65536, default="
+                                       __MODULE_STRING(TIMER_MARGIN) ")");
 
 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) ")");
 
 #ifdef ONLY_TESTING
 static int soft_noboot = 1;
@@ -93,8 +96,7 @@ static void watchdog_fire(unsigned long data)
 
        if (soft_noboot)
                printk(KERN_CRIT PFX "Triggered - Reboot ignored.\n");
-       else
-       {
+       else {
                printk(KERN_CRIT PFX "Initiating system reboot.\n");
                emergency_restart();
                printk(KERN_CRIT PFX "Reboot didn't ?????\n");
@@ -153,7 +155,8 @@ static int softdog_release(struct inode *inode, struct file *file)
                softdog_stop();
                module_put(THIS_MODULE);
        } else {
-               printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+               printk(KERN_CRIT PFX
+                       "Unexpected close, not stopping watchdog!\n");
                set_bit(0, &orphan_timer);
                softdog_keepalive();
        }
@@ -162,12 +165,13 @@ static int softdog_release(struct inode *inode, struct file *file)
        return 0;
 }
 
-static ssize_t softdog_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
+static ssize_t softdog_write(struct file *file, const char __user *data,
+                                               size_t len, loff_t *ppos)
 {
        /*
         *      Refresh the timer.
         */
-       if(len) {
+       if (len) {
                if (!nowayout) {
                        size_t i;
 
@@ -188,13 +192,13 @@ static ssize_t softdog_write(struct file *file, const char __user *data, size_t
        return len;
 }
 
-static int softdog_ioctl(struct inode *inode, struct file *file,
-       unsigned int cmd, unsigned long arg)
+static long softdog_ioctl(struct file *file, unsigned int cmd,
+                                                       unsigned long arg)
 {
        void __user *argp = (void __user *)arg;
        int __user *p = argp;
        int new_margin;
-       static struct watchdog_info ident = {
+       static const struct watchdog_info ident = {
                .options =              WDIOF_SETTIMEOUT |
                                        WDIOF_KEEPALIVEPING |
                                        WDIOF_MAGICCLOSE,
@@ -202,26 +206,25 @@ static int softdog_ioctl(struct inode *inode, struct file *file,
                .identity =             "Software Watchdog",
        };
        switch (cmd) {
-               default:
-                       return -ENOTTY;
-               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:
-                       softdog_keepalive();
-                       return 0;
-               case WDIOC_SETTIMEOUT:
-                       if (get_user(new_margin, p))
-                               return -EFAULT;
-                       if (softdog_set_heartbeat(new_margin))
-                               return -EINVAL;
-                       softdog_keepalive();
-                       /* Fall */
-               case WDIOC_GETTIMEOUT:
-                       return put_user(soft_margin, p);
+       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:
+               softdog_keepalive();
+               return 0;
+       case WDIOC_SETTIMEOUT:
+               if (get_user(new_margin, p))
+                       return -EFAULT;
+               if (softdog_set_heartbeat(new_margin))
+                       return -EINVAL;
+               softdog_keepalive();
+               /* Fall */
+       case WDIOC_GETTIMEOUT:
+               return put_user(soft_margin, p);
+       default:
+               return -ENOTTY;
        }
 }
 
@@ -232,10 +235,9 @@ static int softdog_ioctl(struct inode *inode, struct file *file,
 static int softdog_notify_sys(struct notifier_block *this, unsigned long code,
        void *unused)
 {
-       if(code==SYS_DOWN || code==SYS_HALT) {
+       if (code == SYS_DOWN || code == SYS_HALT)
                /* Turn the WDT off */
                softdog_stop();
-       }
        return NOTIFY_DONE;
 }
 
@@ -247,7 +249,7 @@ static const struct file_operations softdog_fops = {
        .owner          = THIS_MODULE,
        .llseek         = no_llseek,
        .write          = softdog_write,
-       .ioctl          = softdog_ioctl,
+       .unlocked_ioctl = softdog_ioctl,
        .open           = softdog_open,
        .release        = softdog_release,
 };
@@ -268,24 +270,27 @@ static int __init watchdog_init(void)
 {
        int ret;
 
-       /* Check that the soft_margin value is within it's range ; if not reset to the default */
+       /* Check that the soft_margin value is within it's range;
+          if not reset to the default */
        if (softdog_set_heartbeat(soft_margin)) {
                softdog_set_heartbeat(TIMER_MARGIN);
-               printk(KERN_INFO PFX "soft_margin value must be 0<soft_margin<65536, using %d\n",
+               printk(KERN_INFO PFX
+                   "soft_margin must be 0 < soft_margin < 65536, using %d\n",
                        TIMER_MARGIN);
        }
 
        ret = register_reboot_notifier(&softdog_notifier);
        if (ret) {
-               printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-                       ret);
+               printk(KERN_ERR PFX
+                       "cannot register reboot notifier (err=%d)\n", ret);
                return ret;
        }
 
        ret = misc_register(&softdog_miscdev);
        if (ret) {
-               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);
                unregister_reboot_notifier(&softdog_notifier);
                return ret;
        }