linux-kernel - Re: firmware loading failure for AR3011 (0cf3:3000 or 0cf3:3005 ?)

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Date:	Tue, 24 Jan 2012 00:14:30 -0600
From:	Jonathan Nieder <jrnieder@...il.com>
To:	linux-bluetooth@...r.kernel.org
Cc:	Andres Cimmarusti <acimmarusti@...il.com>,
	linux-kernel@...r.kernel.org, info@...uxcertified.com,
	Paul Fertser <fercerpav@...il.com>,
	"Gustavo F. Padovan" <padovan@...fusion.mobi>,
	Marcel Holtmann <marcel@...tmann.org>
Subject: Re: firmware loading failure for AR3011 (0cf3:3000 or 0cf3:3005 ?)

Hi,

Andres Cimmarusti wrote[1]:

> This is my device:
>
> Bus 001 Device 003: ID 0cf3:3000 Atheros Communications, Inc. AR3011 Bluetooth (no firmware)
>
> It does not turn on and kern.log shows following errors:
>
> [    9.335184] ath3k_load_firmware: Can't change to loading configuration err
> [    9.335413] ath3k: probe of 1-1.3:1.0 failed with error -110

Further investigation revealed that the problem seems to be in
userspace: various kernels including a 2.6.32.y-based and 3.1.8-based
one reproducibly exhibit this behavior with a Debian wheezy userspace
and do _not_ exhibit the problem in Debian squeeze, Ubuntu 11.10, or
Fedora 16.  More results:

 * The problem does not seem to be udev: downgrading udev in wheezy
   does not make the problem go away, and upgrading udev in squeeze
   does not provoke trouble.

 * The problem does not seem to be firmware-atheros: upgrading the
   firmware in squeeze does not provoke trouble.

 * The problem does not seem to be usb-modeswitch, for similar
   reasons.  (You can see us grasping at straws here.)

I guess the next natural component to blame is bluez.

Any hints (e.g., debugging switches) for tracking this down?

Thanks,
Jonathan

[1] http://bugs.debian.org/641749
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