PDMA_MAX_DESC_BYTES   72 drivers/dma/mmp_pdma.c #define PDMA_MAX_DESC_BYTES	DCMD_LENGTH
PDMA_MAX_DESC_BYTES   74 drivers/dma/pxa_dma.c #define PDMA_MAX_DESC_BYTES	(PXA_DCMD_LENGTH & ~((1 << PDMA_ALIGNMENT) - 1))