ARM: v6k: DMA_CACHE_RWFO isn't appropriate for non-v6k CPUs
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: NWill Deacon <will.deacon@arm.com> Tested-by: NSourav Poddar <sourav.poddar@ti.com> Tested-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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