linux-kernel - recent kernels misidentify my Broadcom BCM4401-B0

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Message-Id: <20110326225250.12547b93.celejar@gmail.com>
Date:	Sat, 26 Mar 2011 22:52:50 -0400
From:	Celejar <celejar@...il.com>
To:	lkml <linux-kernel@...r.kernel.org>
Subject: recent kernels misidentify my Broadcom BCM4401-B0

Hi,

With recent kernels (git pulls of vanillas sources from kernel.org,
mainline and 2.6.38.1), my Broadcom BCM4401-B0 Ethernet card, normally
driven by the b44 driver, has stopped working.  Poking around, I
discovered that the card is (sometimes) no longer correctly identified;
it now (sometimes) shows up (with 'lspci -v' as root) as this bizarre
device:

06:01.0 Network and computing encryption device: Broadcom Corporation Device 0010 (rev 02) (prog-if 10)
        Subsystem: Allied Telesis, Inc Device 0010
        Flags: fast devsel, IRQ 10
        Memory at d0000000 (32-bit, non-prefetchable) [disabled] [size=8K]
        Capabilities: [40] Power Management version 2

This is what it looks like when it's correctly detected:

06:01.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
        Subsystem: Acer Incorporated [ALI] Device 0090
        Flags: bus master, fast devsel, latency 64, IRQ 21
        Memory at d0000000 (32-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 2
        Kernel driver in use: b44

I'm currently seeing the problem with 2.6.38.1.  What on earth is this
all about?

IIANM, the same kernel will sometimes detect the card correctly, and
sometimes incorrectly; this will make doing a bisection somewhat tricky.

Any suggestions, or further tests I should try, or information I should
provide?

[Please cc. me on replies.]

Celejar
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