[PATCH] iommu/exynos: prevent building on big-endian kernels

[Krzysztof Kozlowski]

On Fri, Jul 28, 2017 at 03:19:19PM +0200, Arnd Bergmann wrote:
> Since we print the correct warning, an allmodconfig build is no longer
> clean but always prints it, which defeats compile-testing:
> 
> drivers/iommu/exynos-iommu.c:58:2: error: #warning "revisit driver if we can enable big-endian ptes" [-Werror=cpp]
> 
> This replaces the #warning with a dependency, moving warning text into
> a comment.
> 
> Fixes: 1f59adb1766d ("iommu/exynos: Replace non-existing big-endian Kconfig option")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
>  drivers/iommu/Kconfig        | 1 +
>  drivers/iommu/exynos-iommu.c | 4 ----
>  2 files changed, 1 insertion(+), 4 deletions(-)
>

Makes sense, although there is no error to fix (for fixes tag). If there
was an error, then probably the one bringing warning and wrong kconfig
option (6ae5343c26f9cba5e9ef8 "iommu/exynos: update to use iommu
big-endian")?

Reviewed-by: Krzysztof Kozlowski <krzk at kernel.org>

Best regards,
Krzysztof