VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)

[linux-2.6.git] / drivers / char / watchdog / sc1200wdt.c

diff --git a/drivers/char/watchdog/sc1200wdt.c b/drivers/char/watchdog/sc1200wdt.c
index b7e4885..9ddebae 100644 (file)
--- a/drivers/char/watchdog/sc1200wdt.c
+++ b/drivers/char/watchdog/sc1200wdt.c
@@ -157,6 +157,8 @@ static inline int sc1200wdt_status(void)
 
 static int sc1200wdt_open(struct inode *inode, struct file *file)
 {
+       nonseekable_open(inode, file);
+
        /* allow one at a time */
        if (down_trylock(&open_sem))
                return -EBUSY;
@@ -174,6 +176,8 @@ static int sc1200wdt_open(struct inode *inode, struct file *file)
 static int sc1200wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
 {
        int new_timeout;
+       void __user *argp = (void __user *)arg;
+       int __user *p = argp;
        static struct watchdog_info ident = {
                .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
                .firmware_version = 0,
@@ -185,22 +189,22 @@ static int sc1200wdt_ioctl(struct inode *inode, struct file *file, unsigned int
                        return -ENOIOCTLCMD;    /* Keep Pavel Machek amused ;) */
 
                case WDIOC_GETSUPPORT:
-                       if (copy_to_user((struct watchdog_info *)arg, &ident, sizeof ident))
+                       if (copy_to_user(argp, &ident, sizeof ident))
                                return -EFAULT;
                        return 0;
 
                case WDIOC_GETSTATUS:
-                       return put_user(sc1200wdt_status(), (int *)arg);
+                       return put_user(sc1200wdt_status(), p);
 
                case WDIOC_GETBOOTSTATUS:
-                       return put_user(0, (int *)arg);
+                       return put_user(0, p);
 
                case WDIOC_KEEPALIVE:
                        sc1200wdt_write_data(WDTO, timeout);
                        return 0;
 
                case WDIOC_SETTIMEOUT:
-                       if (get_user(new_timeout, (int *)arg))
+                       if (get_user(new_timeout, p))
                                return -EFAULT;
 
                        /* the API states this is given in secs */
@@ -213,13 +217,13 @@ static int sc1200wdt_ioctl(struct inode *inode, struct file *file, unsigned int
                        /* fall through and return the new timeout */
 
                case WDIOC_GETTIMEOUT:
-                       return put_user(timeout * 60, (int *)arg);
+                       return put_user(timeout * 60, p);
 
                case WDIOC_SETOPTIONS:
                {
                        int options, retval = -EINVAL;
 
-                       if (get_user(options, (int *)arg))
+                       if (get_user(options, p))
                                return -EFAULT;
 
                        if (options & WDIOS_DISABLECARD) {
@@ -254,11 +258,8 @@ static int sc1200wdt_release(struct inode *inode, struct file *file)
 }
 
 
-static ssize_t sc1200wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t sc1200wdt_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
 {
-       if (ppos != &file->f_pos)
-               return -ESPIPE;
-
        if (len) {
                if (!nowayout) {
                        size_t i;