do_async_xor(struct dma_async_tx_descriptor *tx, struct dma_device *device,
struct dma_chan *chan, struct page *dest, struct page **src_list,
unsigned int offset, unsigned int src_cnt, size_t len,
do_async_xor(struct dma_async_tx_descriptor *tx, struct dma_device *device,
struct dma_chan *chan, struct page *dest, struct page **src_list,
unsigned int offset, unsigned int src_cnt, size_t len,