dma_free_attrs    158 arch/x86/include/asm/dma-mapping.h #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
dma_free_attrs    280 include/linux/dma-mapping.h 	return dma_free_attrs(dev, size, cpu_addr, dma_addr, &attrs);