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From: Hiroshi Doyu <hdoyu@nvidia.com>
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Date: Wed, 6 Feb 2013 20:16:35 +0100
Subject: Re: [PATCH 1/1] memory: tegra_ahb_enable_smmu() depends on
 TEGRA_IOMMU_SMMU
Thread-Topic: [PATCH 1/1] memory: tegra_ahb_enable_smmu() depends on
 TEGRA_IOMMU_SMMU
Thread-Index: Ac4EnnyJ7MZT4w/8TdKR19R6zdUgmA==
Message-ID: <20130206.211635.744922728615926717.hdoyu@nvidia.com>
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Hi Russell,

Stephen Warren <swarren@wwwdotorg.org> wrote @ Wed, 6 Feb 2013 19:51:46 +0100:

> On 02/06/2013 11:34 AM, Hiroshi Doyu wrote:
> > New SoC, Tegra114 also uses SMMU. Change tegra_ahb_enable_smmu()'s
> > dependency from ARCH_TEGRA_3x_SOC to TEGRA_IOMMU_SMMU. No need to edit
> > whenever a new Tegra SoC comes.
> > 
> > The following combination caused build error, which this patch fixes.
> > 
> > CONFIG_ARCH_TEGRA_2x_SOC=y
> > \# CONFIG_ARCH_TEGRA_3x_SOC is not set
> > CONFIG_ARCH_TEGRA_114_SOC=y
> > 
> > drivers/iommu/tegra-smmu.c:485: undefined reference to 'tegra_ahb_enable_smmu'
> 
> Tested-by: Stephen Warren <swarren@nvidia.com>
> 
> Russell, I assume Hiroshi should upload this to your patch tracker? It's
> needed for 3.9.

FYI: Submitted as:
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7640/1