These days, the DMA mapping code must bounce buffers for any unsupported
address. If the driver needs to optimize for natively supported ranges,
then it should use dma_get_required_mask.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NMarc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>