Re: Ioctl

From: Jonathan Corbet
Date: Mon Jan 31 2011 - 15:23:36 EST

On Mon, 31 Jan 2011 11:39:13 -0800
"Brian D. McGrew" <brian@xxxxxxxxxxxxx> wrote:

> I'm very new at working with the kernel and device drivers and I'm trying to
> bring ours drivers up from a 2.6.16 kernel to 2.6.37. I'm noticing that
> ioctl() doesn't seem to be raound anymore, or at least I can't find it.

What you almost certainly want is unlocked_ioctl(), which handles ioctl()
calls but lacks the protection of the (soon to be removed) big kernel
lock. If your driver is properly written, you should have no problem
using unlocked_ioctl(), but do note that the function prototype is a
little different.

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