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Commit db3a7fd7 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Joerg Roedel
Browse files

iommu/exynos: prevent building on big-endian kernels 



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: 1f59adb1 ("iommu/exynos: Replace non-existing big-endian Kconfig option")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Reviewed-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 1f59adb1

drivers/iommu/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -253,6 +253,7 @@ config TEGRA_IOMMU_SMMU 
config EXYNOS_IOMMU

	bool "Exynos IOMMU Support"

	depends on ARCH_EXYNOS && MMU

	depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes

	select IOMMU_API

	select ARM_DMA_USE_IOMMU

	help

drivers/iommu/exynos-iommu.c

+0 −4
Original line number Diff line number Diff line
@@ -54,10 +54,6 @@ typedef u32 sysmmu_pte_t; 
#define lv2ent_small(pent) ((*(pent) & 2) == 2)

#define lv2ent_large(pent) ((*(pent) & 3) == 1)



#ifdef CONFIG_CPU_BIG_ENDIAN

#warning "revisit driver if we can enable big-endian ptes"

#endif



/*

 * v1.x - v3.x SYSMMU supports 32bit physical and 32bit virtual address spaces

 * v5.0 introduced support for 36bit physical address space by shifting