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Message-ID: <463790A6.50003@interia.pl>
Date: Tue, 01 May 2007 21:10:30 +0200
From: Rafał Bilski <rafalbilski@...eria.pl>
To: Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: Natsemi DP83815 driver spaming
>> eth0: Media selection timer tick.
>> eth0: possible phy reset: re-initializing
>
> This is why the reset is being triggered - it's a workaround for a hardware
> bug which checks to make sure the hardware is in the state that the
> kernel thinks it is is going off. The code has this explanatory comment:
>
> * 2) check for sudden death of the NIC:
> * It seems that a reference set for this chip went out with incorrect info,
> * and there exist boards that aren't quite right. An unexpected voltage
> * drop can cause the PHY to get itself in a weird state (basically reset).
> * NOTE: this only seems to affect revC chips.
Yes. I have revision C chip.
> I'd suggest checking your power supply as a first step.
5,25V when not connected. 5,04V when connected to Wyse. I don't have access to
osciloscope.
I will check if this code is nedded. If it is then I will try to get new power
supply.
> [BTW, as Andrew said please don't drop people from the CC.]
OK. Will not happen again.
Rafał
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