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Message-ID: <20110131125524.116fe96e@bike.lwn.net>
Date: Mon, 31 Jan 2011 12:55:24 -0700
From: Jonathan Corbet <corbet@....net>
To: "Brian D. McGrew" <brian@...ionpro.com>
Cc: <linux-kernel@...r.kernel.org>
Subject: Re: Ioctl
On Mon, 31 Jan 2011 11:39:13 -0800
"Brian D. McGrew" <brian@...ionpro.com> 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.
jon
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