From: Matt Porter <mporter@kernel.crashing.org>
To: "Barbier, Renaud (GE Infrastructure)" <Renaud.Barbier@ge.com>,
linuxppc-embedded@ozlabs.org,
Matt Porter <mporter@kernel.crashing.org>
Subject: Re: 440GX interrupt
Date: Fri, 18 Feb 2005 08:56:24 -0700 [thread overview]
Message-ID: <20050218085624.A11439@cox.net> (raw)
In-Reply-To: <20050217233605.GA10915@gate.ebshome.net>; from ebs@ebshome.net on Thu, Feb 17, 2005 at 03:36:05PM -0800
On Thu, Feb 17, 2005 at 03:36:05PM -0800, Eugene Surovegin wrote:
> On Thu, Feb 17, 2005 at 02:54:14PM -0800, Eugene Surovegin wrote:
> > Probably it's a race which cannot be avoided anyway because external
> > IRQs are completely async, and your version of ppc4xx_pic.c just has a
> > bug. I'll think about it a little more.
>
> Uhh, yes, I think it's a bug in 4xx version of disable_irq.
>
> We have to ACK parent UIC after disabling IRQ to prevent false
> triggering in case this IRQ was already pending during disable_irq
> call.
>
> Here is a patch against current 2.6, so you can get an idea what I'm
> talking about :):
Gah, yes. Please add the sign off line and it can go in the mainline.
-Matt
prev parent reply other threads:[~2005-02-18 15:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-17 21:50 440GX interrupt Barbier, Renaud (GE Infrastructure)
2005-02-17 22:54 ` Eugene Surovegin
2005-02-17 23:36 ` Eugene Surovegin
2005-02-18 15:56 ` Matt Porter [this message]
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