linux-kernel - Re: [PATCH 12/34] AMD IOMMU: add detect code for AMD IOMMU hardware

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Date:	Wed, 9 Jul 2008 18:51:01 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Joerg Roedel <joerg.roedel@....com>
Cc:	tglx@...utronix.de, mingo@...hat.com, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org, bhavna.sarathy@....com,
	Sebastian.Biemueller@....com, robert.richter@....com,
	joro@...tes.org
Subject: Re: [PATCH 12/34] AMD IOMMU: add detect code for AMD IOMMU hardware

On Thu, 26 Jun 2008 21:27:48 +0200 Joerg Roedel <joerg.roedel@....com> wrote:

> This patch adds the detection of AMD IOMMU hardware provided on information
> from ACPI provided by the BIOS.
> 
> ...
>
> +static int __init init_iommu_all(struct acpi_table_header *table)
> +{
> +	u8 *p = (u8 *)table, *end = (u8 *)table;
> +	struct ivhd_header *h;
> +	struct amd_iommu *iommu;
> +	int ret;
> +
> +	INIT_LIST_HEAD(&amd_iommu_list);

Initialisation of a global list_head should be unnecessary.  Just define
the list_head with LIST_HEAD() and do it at compile-time.


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