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) {
wdt_ping();
return 1;
* according to their available features. We only actually usefully support
* querying capabilities and current status.
*/
-static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+static int wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int new_margin, rv;
return -ENOTTY;
}
+static long wdt_unlocked_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ int ret;
+
+ lock_kernel();
+ ret = wdt_ioctl(file, cmd, arg);
+ unlock_kernel();
+
+ return ret;
+}
+
/**
* wdt_open:
* @inode: inode of device
*/
wdt_is_open = 1;
unlock_kernel();
- return 0;
+ return nonseekable_open(inode, file);
}
return -ENODEV;
}
static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.read = wdt_read,
- .ioctl = wdt_ioctl,
+ .unlocked_ioctl = wdt_unlocked_ioctl,
.write = wdt_write,
.open = wdt_open,
.release = wdt_release,