linux-kernel - Re: [2.6.26-rc4] Problems with rt2x00 USB interface on powerpc

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Date:	Fri, 13 Jun 2008 01:06:34 -0300
From:	Rogério Brito <rbrito@....usp.br>
To:	Ivo van Doorn <ivdoorn@...il.com>
Cc:	"John W. Linville" <linville@...driver.com>,
	linux-kernel@...r.kernel.org, rbrito@....usp.br
Subject: Re: [2.6.26-rc4] Problems with rt2x00 USB interface on powerpc

Hi, Ivo.

I finally found a x86-64 (little-endian) where I could test the D-Link
stick.

On Jun 12 2008, Ivo van Doorn wrote:
> Unfortunately I haven't that much time to test it, and the
> allmodconfig kernel is still providing the same problems as my usual
> configuration.

Thanks quite unfortunate. For me, I can't make -rc5 associate with the
AP, which is a regression regarding -rc4. With -rc4, on this x86-64
machine, at least I could associate and everything looked fine, but like
with the iBook, I can't get a dhcp lease from the AP. :-(

(BTW, I think that I can do some sessions of "git bisect" to find which
patch has modified this behavior).

I compiled the kernel with debugfs, like you instructed me and got a
register dump of the kernel on this machine and looking at it, there
seems to have some endianness things going on, but I am not qualified to
say anything about this.

> I am a bit closer at tracking this down, but I won't have another shot
> at this before the weekend :S

:-(

Well, I'm attaching the diff between the regdump from the earlier try on
the iBook and the regdump from this x86-64. I think that some
conclusions may be drawn from it, since it seems to be your domain of
expertise.

Thanks, Rogério Brito.

P.S.: If John can say something that you would like me to try, I will do
my best.
-- 
Rogério Brito : rbrito@...ckenzie,ime.usp}.br : GPG key 1024D/7C2CAEB8
http://www.ime.usp.br/~rbrito : http://meusite.mackenzie.com.br/rbrito
Projects: algorithms.berlios.de : lame.sf.net : vrms.alioth.debian.org

View attachment "diff-regdump.txt" of type "text/plain" (3378 bytes)