linux-kernel - Re: [linux-usb-devel] [PATCH] OHCI: disallow autostop when wakeup is not available

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Message-Id: <200701041209.09081.arvidjaar@mail.ru>
Date:	Thu, 4 Jan 2007 12:09:08 +0300
From:	Andrey Borzenkov <arvidjaar@...l.ru>
To:	David Brownell <david-b@...bell.net>
Cc:	linux-usb-devel@...ts.sourceforge.net,
	Alan Stern <stern@...land.harvard.edu>,
	Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org
Subject: Re: [linux-usb-devel] [PATCH] OHCI: disallow autostop when wakeup is not available

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On Thursday 04 January 2007 00:50, David Brownell wrote:
> On Tuesday 02 January 2007 7:16 am, Alan Stern wrote:
> > On Mon, 1 Jan 2007, Andrey Borzenkov wrote:
> > > Is the original problem (OHCI constantly attempting and failing to
> > > suspend root hub) supposed to be fixed in 2.6.20?
> >
> > No.  It can't be fixed in the kernel because it is a hardware bug.
>
> I'm curious though:  did older kernels, say 2.6.18, have such issues?

Yes. It is hardware problem all right.

[...]
>
> Not just that ... it also fixed the problem where quirk entries
> saying "don't even try using remote wakeup" stopped working.
>

Exactly. I am sorry for being unclear - actually the question was, whether 
quirks are implemented in 2.6.20 (because I remember them being mentioned 
before).

> Once some pending PPC-related OHCI patches merge (support for
> PS3 and other CELL systems), there will be infrastructure that
> makes it easier to add quirk entries that say "this board can't
> do remote wakeup properly".  At that point, we can start to
> collect quirks for boards like this one.
>

OK so this answers the question - it is not yet being implemented.

thank you

- -andrey
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