Re: [RFC PATCH v1 24/40] metag: DMA

[Arnd Bergmann]

On Friday 23 November 2012, James Hogan wrote:
> Subject: [PATCH 1/1] asm-generic/io.h: check CONFIG_VIRT_TO_BUS
> 
> Make asm-generic/io.h check CONFIG_VIRT_TO_BUS before defining
> virt_to_bus() and bus_to_virt(), otherwise it's easy to accidentally
> have a silently failing incorrect direct mapped definition rather then
> no definition at all.
> 
> Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>

Good catch!

Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
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