DMAM_ALLOC_COHERENT(9) Device drivers infrastructure DMAM_ALLOC_COHERENT(9)NAMEdmam_alloc_coherent - Managed dma_alloc_coherent
SYNOPSIS
void * dmam_alloc_coherent(struct device * dev, size_t size,
dma_addr_t * dma_handle, gfp_t gfp);
ARGUMENTS
dev
Device to allocate coherent memory for
size
Size of allocation
dma_handle
Out argument for allocated DMA handle
gfp
Allocation flags
DESCRIPTION
Managed dma_alloc_coherent. Memory allocated using this function will
be automatically released on driver detach.
RETURNS
Pointer to allocated memory on success, NULL on failure.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 DMAM_ALLOC_COHERENT(9)