linux-kernel - Re: [RFC][PATCH 1/3] use new pm

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Message-Id: <1207259267.10388.334.camel@pasglop>
Date:	Fri, 04 Apr 2008 08:47:47 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg KH <greg@...ah.com>, Len Brown <lenb@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Alexey Starikovskiy <astarikovskiy@...e.de>,
	David Brownell <david-b@...bell.net>,
	Pavel Machek <pavel@....cz>, Oliver Neukum <oliver@...kum.org>,
	Nigel Cunningham <ncunningham@...a.org.au>,
	Dave Airlie <airlied@...ux.ie>
Subject: Re: [RFC][PATCH 1/3] use new pm_ops in DRM drivers


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.


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