[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <1186491879.8780.51.camel@queen.suse.de>
Date: Tue, 07 Aug 2007 15:04:39 +0200
From: Thomas Renninger <trenn@...e.de>
To: Henrique de Moraes Holschuh <hmh@....eng.br>
Cc: Tejun Heo <htejun@...il.com>,
Michael Sedkowski <sedmich@...il.com>,
"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
linux-ide@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: Disk spin down issue on shut down/suspend to disk
On Tue, 2007-08-07 at 09:51 -0300, Henrique de Moraes Holschuh wrote:
> On Tue, 07 Aug 2007, Tejun Heo wrote:
> > Henrique de Moraes Holschuh wrote:
> > > On Tue, 07 Aug 2007, Tejun Heo wrote:
> > >> Michael Sedkowski wrote:
---snip---
> > > Any chances of changing things
> > > so that we inspect/snoop all tasks sent to the device, and filter them
> > > out, or react to them accordingly?
> >
> > No, we can't unless we snoop ACPI method execution and detect accesses
> > to IO ports or iomem regions. It's not going through any driver. This
> > is a gross mess.
>
> I don't mean fixing the stuff clowns like Toshiba did. The correct fix for
> that is to blacklist the hell out of that crap and patch their DSDT into
> something remotely sane.
>
> I do mean snooping the ACPI methods that *return* a taskset to send to the
> driver, and we send that taskset ourselves in libata and libpata(?).
I haven't read the whole thread in every detail, but this sounds like a
very intrusive, overdosed workaround.
Are the DSDT/SSDTs already lying around somewhere (collecting them in a
bug assigned to ACPI component should be a good idea)?
Could someone give me a pointer where this happens (best in code and
DSDT).
Thanks,
Thomas
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists