From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [RFC][PATCH 1/3] use new pm_ops in DRM drivers
Date: Fri, 04 Apr 2008 08:47:47 +1100
Message-ID: <1207259267.10388.334.camel@pasglop>
References: <200804020207.40278.rjw@sisk.pl> <200804020209.47207.rjw@sisk.pl>
	<200804031150.55967.jbarnes@virtuousgeek.org>
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To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Nigel Cunningham <ncunningham@crca.org.au>, Dave Airlie <airlied@linux.ie>, LKML <linux-kernel@vger.kernel.org>, ACPI Devel Maling List <linux-acpi@vger.kernel.org>, pm list <linux-pm@lists.linux-foundation.org>, Alexey Starikovskiy <astarikovskiy@suse.de>
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On Thu, 2008-04-03 at 11:50 -0700, Jesse Barnes wrote:
> +static struct pm_ops i915_pm_ops = {
> +       .prepare = NULL, /* DRM core should prevent any new ioctls? */
> +       .complete = NULL, /* required to re-enable DRM client requests
> */

The DRM core could definitely provide generic prepare & complete that
sync'up with user space, making sure the command streams stop etc...

Ben.