Man page 9 : dmam_alloc_noncoherent

dmam_alloc_noncoherent - Managed dma_alloc_non_coherent

void * dmam_alloc_noncoherent(struct device *  dev , size_t  size , dma_addr_t *  dma_handle , gfp_t  gfp );

dev
    Device to allocate non_coherent memory for

size
    Size of allocation

dma_handle
    Out argument for allocated DMA handle

gfp
    Allocation flags

Managed dma_alloc_non_coherent. Memory allocated using this function will be automatically released on driver detach.

Pointer to allocated memory on success, NULL on failure.