[PATCH] iommu: provide of_xlate pointer unconditionally
Joerg Roedel
jroedel at suse.de
Tue Apr 5 04:25:36 PDT 2016
On Tue, Mar 15, 2016 at 10:37:17PM +0100, Arnd Bergmann wrote:
> iommu drivers that support the standard DT bindings use a of_xlate
> callback pointer, but that is only part of struct iommu_ops when
> CONFIG_OF_IOMMU is enabled, leading to build errors in randconfig
> builds when that is not provided:
>
> drivers/iommu/mtk_iommu.c:497:2: error: unknown field 'of_xlate' specified in initializer
> .of_xlate = mtk_iommu_of_xlate,
> ^
> drivers/iommu/mtk_iommu.c:497:14: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
> .of_xlate = mtk_iommu_of_xlate,
> ^~~~~~~~~~~~~~~~~~
> drivers/iommu/mtk_iommu.c:497:14: note: (near initialization for 'mtk_iommu_ops.domain_get_attr')
>
> We can work around it by adding more #ifdefs in each driver, but
> it seems nicer to just allow setting the pointer even if it is
> unused. This makes the driver code look nicer, and it gives better
> compile-time coverage when test building on other architectures.
>
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> Fixes: 0df4fabe208d ("iommu/mediatek: Add mt8173 IOMMU driver")
Applied to iommu/fixes, thanks Arnd.
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