linux-4.4.1/dmam_free_coherent()

参照元†

• linux-4.4/DMA_API

説明†

• パス: linux-4.4.1/drivers/base/dma-mapping.c

• FIXME: これは何？
  • 説明

引数†

• struct device *dev
  • linux-4.4.1/device
• size_t size
• void *vaddr
• dma_addr_t dma_handle
  • linux-4.4.1/dma_addr_t

返り値†

• なし

参考†

実装†

/**
 * dmam_free_coherent - Managed dma_free_coherent()
 * @dev: Device to free coherent memory for
 * @size: Size of allocation
 * @vaddr: Virtual address of the memory to free
 * @dma_handle: DMA handle of the memory to free
 *
 * Managed dma_free_coherent().
 */
void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,
                        dma_addr_t dma_handle)
{
        struct dma_devres match_data = { size, vaddr, dma_handle };

• • linux-4.4.1/dma_devres

        dma_free_coherent(dev, size, vaddr, dma_handle);

• • linux-4.4.1/dma_free_coherent()

        WARN_ON(devres_destroy(dev, dmam_coherent_release, dmam_match,
                               &match_data));

• • linux-4.4.1/WARN_ON()
  • linux-4.4.1/devres_destroy()
  • linux-4.4.1/dmam_coherent_release()

}
EXPORT_SYMBOL(dmam_free_coherent);

• • linux-4.4.1/EXPORT_SYMBOL()

コメント†

中の人

• katsuhiro

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