netdev - Re: tg3: link is permanently down after ifdown and ifup

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Message-ID: <4B07C90B.5060708@embedded-sol.com>
Date:	Sat, 21 Nov 2009 13:03:39 +0200
From:	Felix Radensky <felix@...edded-sol.com>
To:	Michael Chan <mchan@...adcom.com>
CC:	mcarlson@...adcom.com,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linuxppc-dev@...abs.org" <linuxppc-dev@...abs.org>
Subject: Re: tg3: link is permanently down after ifdown and ifup

Hi,

Michael Chan wrote:
> On Thu, 2009-11-19 at 08:08 -0800, Felix Radensky wrote:
>   
>> Hi,
>>
>> The problem goes away if I remove the call to
>>
>> tg3_set_power_state(tp, PCI_D3hot);
>>
>> from tg3_close().
>>     
>
> Added Matt to CC.  He is on vacation and may not be able to look into
> this right away.  Thanks.
>
>   
Thanks, Michael. After digging some more into it, I've found that the
problem is in tg3_power_down_phy() routine. Apparently 57780 PHY
is not handled properly. If tg3_power_down_phy() is not invoked from
tg3_set_power_state(), the problem is not reproducible anymore. I don't
have enough information about  NIC internals to dig further.

Felix.



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