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ARM: v6k: DMA_CACHE_RWFO isn't appropriate for non-v6k CPUs

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Limit DMA_CACHE_RWFO to only v6k SMP CPUs - V6 CPUs aren't SMP capable,
so the read/write for ownership work-around doesn't apply to them.

Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-01-18 13:30:33 +00:00
parent fbb4ddacb6
commit 3bc28c8edc
1 changed files with 1 additions and 1 deletions
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arch/arm/mm/Kconfig
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@ -775,7 +775,7 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
config DMA_CACHE_RWFO
bool "Enable read/write for ownership DMA cache maintenance"
depends on (CPU_V6 || CPU_V6K) && SMP
depends on CPU_V6K && SMP
default y
help
The Snoop Control Unit on ARM11MPCore does not detect the