From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Kok, Auke" <auke-jan.h.kok@intel.com>
Subject: Re: SATA resume slowness, e1000 MSI warning
Date: Tue, 06 Mar 2007 09:09:30 -0800
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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>, Ingo Molnar <mingo@elte.hu>, linux-pm@lists.osdl.org, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Adrian Bunk <bunk@stusta.de>, Pavel Machek <pavel@ucw.cz>, Jens Axboe <jens.axboe@oracle.com>, "Michael S. Tsirkin" <mst@mellanox.co.il>, Andrew Morton <akpm@linux-foundation.org>, Jeff Garzik <jgarzik@pobox.com>, Thomas Gleixner <tglx@linutronix.de>
List-Id: linux-pm@vger.kernel.org

Linus Torvalds wrote:
> =

> On Tue, 6 Mar 2007, Thomas Gleixner wrote:
>> SATA has another nice feature. Somehow there is an interrupt pending on
>> the SATA controller, which comes in somewhere in the middle of resume.
>> If it happens before the SATA code resumed, the SATA code ignores the
>> interrupt and the interrupt is disabled due to "nobody cared", which in
>> turn prevents SATA to ever become functional again. >

> And if you don't want to do any of these things (or are unable to, becaus=
e =

> of some ordering constraint or bad design), then you simply need to =

> unregister and re-register the interrupt handler over sleep.
> =

>> Any idea on that one ?
> =

> Jeff, Auke, does this ring any bells?

For the e1000 issue, the problem is solved with Eric Biederman's 3-patch ms=
i =

cleanups. You should have another message in your mailbox confirming that I =

tested his patches and the MSI warning for e1000 suspend-resume is gone wit=
h them.

Cheers,

Auke