DMA_MAP_FREE 628 sound/oss/soundcard.c dma_alloc_map[chn] = DMA_MAP_FREE; DMA_MAP_FREE 641 sound/oss/soundcard.c if (dma_alloc_map[chn] != DMA_MAP_FREE) { DMA_MAP_FREE 667 sound/oss/soundcard.c dma_alloc_map[chn] = DMA_MAP_FREE;