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a6a398341d
Some devices are restricted to 32-bit DMA. Thus the platform dma_zone_size needs to be set. Otherwise dma-mapping code is complaining, e.g. calxedaxgmac fff50000.ethernet: coherent DMA mask 0xffffffff is smaller than system GFP_DMA mask 0xffffffffffffffff Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>