linux-kernel - [PATCH 0/2] Some firewire minor patches

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Date:	Tue, 21 Apr 2015 02:36:14 +0200
From:	Laurent Vivier <laurent@...ier.eu>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	linux1394-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] Some firewire minor patches

I've written these two patches when I was searching why my old iPod
cannot be mounted on my PC.

During my investigations, I've compared the fw0 config_rom I can access from
a powermac and the config_rom I have on a PC. It appears that the big-endian
property of the firewire bus is not respected here.

Then I was able to see that the 5 first words of the iPod config_rom were
read correctly and the followings not and fail on an ack timeout.
In fact, after the 5 first words, the max speed of the device is changed
from the lowest value to the real max speed of the device, and this does
not work with my iPod. I don't know why, I suspect an incompatibility between
my firewire card and the iPod. As I'm not an expert, the only solution
I found is to allow the user to force the max device speed at firewire-core
level (in my case, force_speed is 0 -> FW100)

[PATCH 1/2] firewire: firewire is a big-endian bus
[PATCH 2/2] firewire: add a parameter to force the speed of the
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