linux-kernel - Re: [PATCH] iommu: APPLE_DART should depend on ARCH

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Message-ID: <YRUFhQ9B7goYvsuN@8bytes.org>
Date:   Thu, 12 Aug 2021 13:27:01 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Sven Peter <sven@...npeter.dev>, Will Deacon <will@...nel.org>,
        Hector Martin <marcan@...can.st>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu: APPLE_DART should depend on ARCH_APPLE

On Tue, Aug 10, 2021 at 03:47:19PM +0200, Geert Uytterhoeven wrote:
> The Apple DART (Device Address Resolution Table) IOMMU is only present
> on Apple ARM SoCs like the M1.  Hence add a dependency on ARCH_APPLE, to
> prevent asking the user about this driver when configuring a kernel
> without support for the Apple Silicon SoC family.
> 
> Fixes: 05ce9d20d699b093 ("iommu/dart: Add DART iommu driver")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
>  drivers/iommu/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> index dfe81da483e9e073..e908b8222e4ed679 100644
> --- a/drivers/iommu/Kconfig
> +++ b/drivers/iommu/Kconfig
> @@ -292,7 +292,7 @@ config SPAPR_TCE_IOMMU
>  
>  config APPLE_DART
>  	tristate "Apple DART IOMMU Support"
> -	depends on ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64)
> +	depends on ARCH_APPLE || (COMPILE_TEST && !GENERIC_ATOMIC64)
>  	select IOMMU_API
>  	select IOMMU_IO_PGTABLE_LPAE
>  	default ARCH_APPLE

Dropped the Fixes tag, as this doesn't fix any real issue. Otherwise
applied with adjusted subject (iommu: -> iommu/dart:), Thanks.