netdev - Re: [PATCH revised 10/11][TG3]: Eliminate spurious interrupts.

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Message-Id: <20070507.002654.130240149.davem@davemloft.net>
Date:	Mon, 07 May 2007 00:26:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mchan@...adcom.com
Cc:	jeff@...zik.org, netdev@...r.kernel.org
Subject: Re: [PATCH revised 10/11][TG3]: Eliminate spurious interrupts.

From: "Michael Chan" <mchan@...adcom.com>
Date: Sat, 05 May 2007 17:19:31 -0700

> [TG3]: Eliminate spurious interrupts.
> 
> Spurious interrupts are often encountered especially on systems
> using the 8259 PIC mode.  This is because the I/O write to deassert
> the interrupt is posted and won't get to the chip immediately.  As
> a result, the IRQ may remain asserted after the IRQ handler exits,
> causing spurious interrupts.
> 
> Flush the interrupt mailbox in non-MSI handlers to de-assert the
> IRQ immediately.  This seems to be the most straight forward approach
> after discussion with Jeff Garzik and David Miller.
> 
> Signed-off-by: Michael Chan <mchan@...adcom.com>

Applied.
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