REQUEST_DMA(9) Hardware Interfaces REQUEST_DMA(9)NAMErequest_dma - request and reserve a system DMA channelSYNOPSISint request_dma(unsigned int dmanr, const char * device_id);ARGUMENTSdmanr DMA channel number device_id reserving device ID string, used in /proc/dmaCOPYRIGHTKernel Hackers Manual 2.6. July 2010 REQUEST_DMA(9)