From: "Matvejchikov Ilya" <matvejchikov@gmail.com>
To: "Theo Gjaltema" <gjalt007@chello.nl>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Too many spurious interrupts on mpc82xx with linux-2.4.35.5
Date: Wed, 31 Oct 2007 22:49:45 +0300 [thread overview]
Message-ID: <8496f91a0710311249p5841d66elc6ae5183df9b043f@mail.gmail.com> (raw)
In-Reply-To: <4728C35B.7000709@chello.nl>
I'm glad to hear it! :)
2007/10/31, Theo Gjaltema <gjalt007@chello.nl>:
> Matvejchikov,
>
> I've tried this on 2.4.25 kernel from the denx eldk3.1.1 distribution
> and it works here fine as well.
> Thanks,
> Theo.
>
> Matvejchikov Ilya schreef:
> > Hi all!
> >
> > If you still have this problem, try this patch. It helps :)
> >
> > Signed-off-by : Matvejchikov Ilya <matvejchikov@gmail.com>
> > ---
> > diff -purN linux-2.4.34.5-vanilla/arch/ppc/kernel/cpm2_pic.c
> > linux-2.4.34.5/arch/ppc/kernel/cpm2_pic.c
> > --- linux-2.4.34.5-vanilla/arch/ppc/kernel/cpm2_pic.c 2007-06-06
> > 23:20:53.000000000 +0400
> > +++ linux-2.4.34.5/arch/ppc/kernel/cpm2_pic.c 2007-06-28
> > 12:17:42.000000000 +0400
> > @@ -79,6 +79,12 @@ static void cpm2_mask_and_ack(unsigned i
> > ppc_cached_irq_mask[word] &= ~(1 << (31 - bit));
> > simr[word] = ppc_cached_irq_mask[word];
> > sipnr[word] = 1 << (31 - bit);
> > +
> > + /*
> > + * Work around large numbers of spurious IRQs on PowerPC 82xx
> > + * systems.
> > + */
> > + mb();
> > }
> >
> > static void cpm2_end_irq(unsigned int irq_nr)
> > _______________________________________________
> > Linuxppc-embedded mailing list
> > Linuxppc-embedded@ozlabs.org
> > https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> >
> >
>
>
prev parent reply other threads:[~2007-10-31 19:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-04 5:51 Too many spurious interrupts on mpc82xx with linux-2.4.35.5 Matvejchikov Ilya
[not found] ` <4728C35B.7000709@chello.nl>
2007-10-31 19:49 ` Matvejchikov Ilya [this message]
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