1DMA_ALLOC_FROM_COHER(9)  Device drivers infrastructure DMA_ALLOC_FROM_COHER(9)
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NAME

6       dma_alloc_from_coherent - try to allocate memory from the per-device
7       coherent area
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SYNOPSIS

10       int dma_alloc_from_coherent(struct device * dev, ssize_t size,
11                                   dma_addr_t * dma_handle, void ** ret);
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ARGUMENTS

14       dev
15           device from which we allocate memory
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17       size
18           size of requested memory area
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20       dma_handle
21           This will be filled with the correct dma handle
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23       ret
24           This pointer will be filled with the virtual address to allocated
25           area.
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DESCRIPTION

28       This function should be only called from per-arch dma_alloc_coherent to
29       support allocation from per-device coherent memory pools.
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31       Returns 0 if dma_alloc_coherent should continue with allocating from
32       generic memory areas, or !0 if dma_alloc_coherent should return ret.
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35Kernel Hackers Manual 3.10         June 2019           DMA_ALLOC_FROM_COHER(9)
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