[WATCHDOG 47/57] softdog: clean up, coding style and switch to unlocked_ioctl

Review and switch to unlocked_ioctl

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 46 insertions, 41 deletions

diff --git a/drivers/watchdog/softdog.c b/drivers/watchdog/softdog.c
index 9c3694909243..bb3c75eed9df 100644
--- 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);
+        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);
         }
 }
 
@@ -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;
         }