__dma_request_channel 1055 include/linux/dmaengine.h struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask, __dma_request_channel 1105 include/linux/dmaengine.h #define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y) __dma_request_channel 1120 include/linux/dmaengine.h return __dma_request_channel(mask, fn, fn_param);