linux-kernel - Re: [PATCH] x66, UV: Enable 64-bit ACPI MFCG support for SGI UV2 platform

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Date:	Fri, 3 Jun 2011 10:28:45 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jack Steiner <steiner@....com>
Cc:	tglx@...utronix.de, hpa@...or.com, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x66, UV: Enable 64-bit ACPI MFCG support for SGI UV2
 platform


* Jack Steiner <steiner@....com> wrote:

> Enable 64-bit ACPI MFCG support for SGI UV2 platform. The check is similar
> to the check on UV1. UV2 has a different oem_id string.
> 
> Signed-off-by: Jack Steiner <steiner@....com>
> 
> 
> ---
>  arch/x86/pci/mmconfig-shared.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> Index: linux/arch/x86/pci/mmconfig-shared.c
> ===================================================================
> --- linux.orig/arch/x86/pci/mmconfig-shared.c	2011-05-31 12:13:19.635285219 -0500
> +++ linux/arch/x86/pci/mmconfig-shared.c	2011-06-02 14:41:26.645034257 -0500
> @@ -519,7 +519,8 @@ static int __init acpi_mcfg_check_entry(
>  	if (cfg->address < 0xFFFFFFFF)
>  		return 0;
>  
> -	if (!strcmp(mcfg->header.oem_id, "SGI"))
> +	if (!strcmp(mcfg->header.oem_id, "SGI") ||
> +	    		!strcmp(mcfg->header.oem_id, "SGI2"))

Wouldnt strncmp(,,3) cover any future SGI3, SGI4 strings as well?

Thanks,

	Ingo
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