linux-kernel - Re: [PATCH 8] PM: Allow user space to change the power.async

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Date:	Fri, 28 Aug 2009 00:24:06 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	"linux-pm" <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, Len Brown <lenb@...nel.org>,
	Pavel Machek <pavel@....cz>,
	Alan Stern <stern@...land.harvard.edu>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Zhang Rui <rui.zhang@...el.com>,
	Linux PCI <linux-pci@...r.kernel.org>
Subject: Re: [PATCH 8] PM: Allow user space to change the power.async_suspend flag of devices

On Thursday 27 August 2009, Dmitry Torokhov wrote:
> Hi Rafael,
> 
> On Thu, Aug 27, 2009 at 09:20:55PM +0200, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rjw@...k.pl>
> > 
> > Add sysfs attribute power/async for every device allowing the user
> > space to access the device's power.async_suspend flag and modify it,
> > if necessary.
> > 
> 
> I don't think we should let users meddle with individual devices;
> one global flag should be enough to work around "broken-at-the-moment"
> issues.

Well, this patch is handy for testing if anyone is interested, so I posted it.

It isn't exactly safe, though, you're right.

Thanks,
Rafael
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