netdev - Re: r8169 mac reading/writing broken

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Message-ID: <4BADF93B.3070609@iki.fi>
Date:	Sat, 27 Mar 2010 14:25:31 +0200
From:	Timo Teräs <timo.teras@....fi>
To:	François Romieu <romieu@...zoreil.com>
CC:	Ivan Vecera <ivecera@...hat.com>, netdev@...r.kernel.org
Subject: Re: r8169 mac reading/writing broken

Timo Teräs wrote:
> François Romieu wrote:
>> Timo Teräs <timo.teras@....fi> :
>> [...]
>>> I don't think this would do anything. The high part is recorded 
>>> correctly always.
>>> It's the 'low' part that gets discarded. I can do similar test if 
>>> writing it
>>> more times will help. Will post results soon.
>>
>> You may check whether writing MAC4 before MAC0 makes a difference
>> or not as well.
> 
> It seems that adding single printk between writing MAC0 and MAC4 fixes it.
> I guess it needs a bit of delay between the writes or something.

Oh, and writing MAC4 first seems to fix it too.

- Timo

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