linux-kernel - Re: [PATCH] sky2: 88E803X transmit lockup

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Date:	Mon, 23 Oct 2006 20:20:26 +0100
From:	"Daniel J Blueman" <daniel.blueman@...il.com>
To:	"Stephen Hemminger" <shemminger@...l.org>
Cc:	"Linux Netdev" <netdev@...r.kernel.org>,
	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sky2: 88E803X transmit lockup

Stephen Hemminger wrote:
> The reason sky2 driver was locking up on transmit on the Yukon-FE chipset
> is that it was misconfiguring the internal RAM buffer so the transmitter
> and receiver were sharing the same space.
>
> The code assumed there was 16K of RAM on Yukon-FE (taken from vendor driver
> sk98lin which is even more f*cked up on this). Then it assigned based on that.
> The giveaway was that the registers would only hold 9bits so both RX/TX
> had 0..1ff for space. It is a wonder it worked at all!
>
> This patch addresses this, and fixes an easily reproducible hang on Transmit.
> Only the Yukon-FE chip is Marvell 88E803X (10/100 only) are affected.
[snip]

This patch works great - without it, I get only a few minutes of use
from my home dir over NFS4 before the NIC stops transmitting. This is
on a recent Yonah Sony VGN-SZ notebook w/ 88E8036 Marvel Sk-Y2.

Thanks again Stephen!
-- 
Daniel J Blueman
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