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Subject: Re: Silent crash witk 2-6.24-rc8-git4
From: Mattias Nissler <mattias.nissler@gmx.de>
To: chris2553@googlemail.com
Cc: "John W. Linville" <linville@tuxdriver.com>,
       linux-wireless@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
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Date: Thu, 24 Jan 2008 10:03:42 +0100
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On Thu, 2008-01-24 at 00:03 +0000, Chris Clayton wrote:
> Thanks for the reply, John.
> 
> On Wednesday 23 January 2008, John W. Linville wrote:
> > On Wed, Jan 23, 2008 at 04:42:58PM +0000, Chris Clayton wrote:
> > > On Wednesday 23 January 2008, Chris Clayton wrote:
> > > > Hi again.
> > > > 
> > > > On Tuesday 22 January 2008, Chris Clayton wrote:
> > > > > Hi,
> > > 
> > > and here's another, slightly more complete, one, this time from 2.6.24-rc8-git6
> > > (the none I sent earlier was from -git4, by the way)
> > > 
> > > Call Trace:
> > > [<c011440a>] __update_rq_clock+0x1a/0xf0
> > > [<e08ff59d>] rt2x00lib_txdone+0x9d/0xd0 [rt2x00lib]
> > > [<e0909573>] rt61pci_txdone+0x153/0x1f0 [rt61pci]
> > > [<e09096ad>] rt61pci_interrupt+0x9d/0xb0 [rt61pci]
> > 
> > I suspect this could relate to this commit:
> > 
> > commit 62bc060b8ed5fcdafd87da5ab17bdd59a39ebcc9
> > Author: Mattias Nissler <mattias.nissler@gmx.de>
> > Date:   Mon Nov 12 15:03:12 2007 +0100
> > 
> >     rt2x00: Allow rt61 to catch up after a missing tx report
> > 
> > Could you revert that patch, rebuild, and try to recreate the problem?
> > 
> 
> I've reverted the patch by hand - the original patch on linux-wireless doesn't match the present state of the code
> in rt61pci.c and I'm not a git user. I'm pretty sure I've got it right, however.
> 
> Problem now is that we are back where we were a few weeks ago because my wireless connection dies
> almost immediately after I start the download and from dmesg I see:
> 
> phy0 -> rt2x00pci_write_tx_data: Error - Arrived at non-free entry in the non-full queue 2.
> Please file bug report to http://rt2x00.serialmonkey.com.

As the patches author, I'm not very surprised :-) The patch just adds
additional processing that should have happened in a different call of
the interrupt handler. I don't think it can be related at all to the
trouble you're seeing.

When I find time, I'll try the Linus tree on my rt61 to see what
happens.

Mattias

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