linux-kernel - Re: [BUG REPORT] smc911x: Auto negotiation NOT supported

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Date:	Fri, 7 Mar 2008 11:54:28 +0000
From:	"Will Newton" <will.newton@...il.com>
To:	"Jeongdo Son" <sohn9086@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linux-SH <linux-sh@...r.kernel.org>
Subject: Re: [BUG REPORT] smc911x: Auto negotiation NOT supported

On Fri, Mar 7, 2008 at 6:00 AM, Jeongdo Son <sohn9086@...il.com> wrote:

>  The problem is that only the first ifup after cold boot succeed.
>  Here is the instruction how to reproduce the symptom.
>  (smc911x is recognized as eth0 on the board.)
>  1. boot up the board, and login.
>  2. ifup eth0  (after doing this, ping works)
>  3. ifdown eth0
>  4. ifup eth0 ("Auto negotiation NOT supported" printed, and ping doesn't works)
>  Please refer to the bottom of this mail.

Are you getting interrupts from the chip? Sounds like it could be you
have missed and interrupt somewhere - check where your interrupt
polarities and where you are acking/clearing them down.
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