linux-kernel - Re: [PATCH 1/3] firewire: fw-ohci: PPC PMac platform code

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Message-Id: <1204415304.15052.464.camel@pasglop>
Date:	Sun, 02 Mar 2008 10:48:24 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Jarod Wilson <jwilson@...hat.com>
Cc:	Stefan Richter <stefanr@...6.in-berlin.de>,
	linuxppc-dev@...abs.org, linux1394-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] firewire: fw-ohci: PPC PMac platform code


On Sat, 2008-03-01 at 14:43 -0500, Jarod Wilson wrote:
> Stefan Richter wrote:
> > Copied from ohci1394.c.  This code is necessary to prevent machine check
> > exceptions when reloading or resuming the driver.
> > 
> > Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
> 
> I was able to reproduce the system exception on resume with a 3rd-gen 
> Titanium PowerBook G4 667, and this patch does let the system resume 
> successfully now.
> 
> Not quite clear if there was possibly an updated version coming using 
> pci_enable_device() instead of the pair of pmac_call_feature() calls, 
> but either way, this is a definite must-have, at least for older ppc 
> macs -- my Aluminum PowerBook G4/1.67 suspends and resumes without this 
> patch just fine.

Let's go with Stefan patch for now. I'll find out what's up with
pci_enable_device() later.

Ben.


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