linux-kernel - Re: 2.6.21-rc4-mm1

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Message-ID: <4603EB81.4050308@lwfinger.net>
Date:	Fri, 23 Mar 2007 10:00:17 -0500
From:	Larry Finger <larry.finger@...inger.net>
To:	Cornelia Huck <cornelia.huck@...ibm.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org,
	linux-wireless@...r.kernel.org,
	Monakhov Dmitriy <dmonakhov@...nvz.org>
Subject: Re: 2.6.21-rc4-mm1

Cornelia Huck wrote:
> On Thu, 22 Mar 2007 13:55:51 -0500,
> Larry Finger <larry.finger@...inger.net> wrote:
>> I applied the debug patch, but I don't see any error codes being returned. This time I also got the
>> General Protection Faults. An excerpt of the log is attached.
> 
> Hm, I think I have an idea about what happened.
> 
> The firmware class tried to suppress the first KOBJ_ADD uevent by
> returning -ENODEV in firmware_uevent if FW_STATUS_READY was not set.
> This only worked as long as the return code of kobject_uevent was not
> checked in device_add. hack-to-make-wireless-work.patch made that first
> uevent return successfully, but this possible triggered some udev rule
> too early, leading to firmware load failures.
> 
> The following (completely untested) patch uses uevent_suppress to stop
> the uevent from being generated during device_add. Does this work for
> you?

Yes it does. Good job. On my first reboot with the new code, the startup of X hung with the black
screen and the big X cursor, but that seems to have been a single occurrence. With the patch, the
bcm43xx firmware is loaded and the device is working.

Thanks,

Larry
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