From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@osdl.org>
Date: Sat, 03 Feb 2007 01:37:46 +0000
Subject: Re: [PATCH 1/1] -  Altix: more ACPI PRT support
Message-Id: <20070202173746.9fc66172.akpm@linux-foundation.org>
List-Id: <linux-ia64.vger.kernel.org>
References: <20070202205412.14367.60290.sendpatchset@attica.americas.sgi.com>
In-Reply-To: <20070202205412.14367.60290.sendpatchset@attica.americas.sgi.com>
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To: John Keller <jpk@sgi.com>
Cc: linux-acpi@vger.kernel.org, ayoung@sgi.com, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, Len Brown <lenb@kernel.org>, "Luck, Tony" <tony.luck@intel.com>

On Fri, 02 Feb 2007 14:54:12 -0600
John Keller <jpk@sgi.com> wrote:

> The SN Altix platform does not conform to the 
> IOSAPIC IRQ routing model. Add code in acpi_unregister_gsi()
> to check if (acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM) and
> return.
> 
> Signed-off-by: John Keller <jpk@sgi.com>
> ---
> 
> Due to an oversight, this code was not added previously when
> similar code was added to acpi_register_gsi().
> 
> http://marc.theaimsgroup.com/?l=linux-acpi&m6680983430121&w=2
> 
>  arch/ia64/kernel/acpi.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> 
> Index: linux-2.6/arch/ia64/kernel/acpi.c
> =================================> --- linux-2.6.orig/arch/ia64/kernel/acpi.c	2007-02-02 14:44:31.000000000 -0600
> +++ linux-2.6/arch/ia64/kernel/acpi.c	2007-02-02 14:47:44.658143727 -0600
> @@ -609,6 +609,9 @@ EXPORT_SYMBOL(acpi_register_gsi);
>  
>  void acpi_unregister_gsi(u32 gsi)
>  {
> +	if (acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM)
> +		return;
> +
>  	iosapic_unregister_intr(gsi);
>  }

Given that the December 22 patch appears to be in mainline, and that this
patch is simple, I shall cheerily bypass maintainers and send it in for
2.6.20.