DMA2_MASK_REG     171 arch/x86/include/asm/dma.h 		dma_outb(dmanr & 3, DMA2_MASK_REG);
DMA2_MASK_REG     179 arch/x86/include/asm/dma.h 		dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);