Re: [PATCH 1/1] Misc: phantom, move to unlocked_ioctl

Andrew Morton
2007-05-18T21:04:47Z

On Fri, 18 May 2007 22:34:53 +0200 (CEST)
Jiri Slaby <jirislaby@gmail.com> wrote:

> @@ -118,7 +125,9 @@ static int phantom_ioctl(struct inode *inode, struct file *file, u_int cmd,
> if (r.reg > 7)
> return -EINVAL;
>
> + spin_lock(&dev->ioctl_lock);
> r.value = ioread32(dev->iaddr + r.reg);
> + spin_unlock(&dev->ioctl_lock);

What is that locking protecting in here?