Commit b2846dfa authored by Al Viro's avatar Al Viro Committed by Linus Torvalds

[PATCH] mv64x60_wdt __user annotations and cleanups

 - use nonseekable_open() instead of messing with

	if (*ppos != file->f_pos)
		return -EISPIPE

   in ->write() (->read is NULL).

 - trivial __user annotations
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent ae8aed03
......@@ -87,6 +87,8 @@ static int mv64x60_wdt_open(struct inode *inode, struct file *file)
mv64x60_wdt_service();
mv64x60_wdt_handler_enable();
nonseekable_open(inode, file);
return 0;
}
......@@ -103,12 +105,9 @@ static int mv64x60_wdt_release(struct inode *inode, struct file *file)
return 0;
}
static ssize_t mv64x60_wdt_write(struct file *file, const char *data,
static ssize_t mv64x60_wdt_write(struct file *file, const char __user *data,
size_t len, loff_t * ppos)
{
if (*ppos != file->f_pos)
return -ESPIPE;
if (len)
mv64x60_wdt_service();
......@@ -119,6 +118,7 @@ static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
int timeout;
void __user *argp = (void __user *)arg;
static struct watchdog_info info = {
.options = WDIOF_KEEPALIVEPING,
.firmware_version = 0,
......@@ -127,13 +127,13 @@ static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user((void *)arg, &info, sizeof(info)))
if (copy_to_user(argp, &info, sizeof(info)))
return -EFAULT;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
if (put_user(wdt_status, (int *)arg))
if (put_user(wdt_status, (int __user *)argp))
return -EFAULT;
wdt_status &= ~WDIOF_KEEPALIVEPING;
break;
......@@ -154,7 +154,7 @@ static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
case WDIOC_GETTIMEOUT:
timeout = mv64x60_wdt_timeout * HZ;
if (put_user(timeout, (int *)arg))
if (put_user(timeout, (int __user *)argp))
return -EFAULT;
break;
......
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