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Date: Wed, 1 Aug 2007 09:24:01 +0200
From: "=?ISO-8859-2?Q?Marcin_=A6lusarz?=" <marcin.slusarz@gmail.com>
To: "Ingo Molnar" <mingo@elte.hu>
Subject: Re: 2.6.20->2.6.21 - networking dies after random time
Cc: "Jarek Poplawski" <jarkao2@o2.pl>, "Thomas Gleixner" <tglx@linutronix.de>,
       "Linus Torvalds" <torvalds@linux-foundation.org>,
       "Jean-Baptiste Vignaud" <vignaud@xandmail.fr>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       shemminger <shemminger@linux-foundation.org>,
       linux-net <linux-net@vger.kernel.org>, netdev <netdev@vger.kernel.org>,
       "Andrew Morton" <akpm@linux-foundation.org>,
       "Alan Cox" <alan@lxorguk.ukuu.org.uk>
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2007/7/30, Ingo Molnar <mingo@elte.hu>:
> (..)
> does the patch below fix those timeouts? It tests the theory whether any
> POST latency could expose this problem.
>
>         Ingo
>
> Index: linux/drivers/net/lib8390.c
> ===================================================================
> --- linux.orig/drivers/net/lib8390.c
> +++ linux/drivers/net/lib8390.c
> @@ -375,6 +375,8 @@ static int ei_start_xmit(struct sk_buff
>         /* Turn 8390 interrupts back on. */
>         ei_local->irqlock = 0;
>         ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
> +       /* force POST: */
> +       ei_inb_p(e8390_base + EN0_IMR);
>
>         spin_unlock(&ei_local->page_lock);
>         enable_irq_lockdep_irqrestore(dev->irq, &flags);
>

Bad news. It doesn't fix the problem.

Marcin
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