Dave Jiang e0100d4090 dmaengine: ioatdma: add descriptor pre-fetch support for v3.4 ...

Adding support for new feature on ioatdma 3.4 hardware that provides
descriptor pre-fetching in order to reduce small DMA latencies.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

2019-02-25 12:18:38 +05:30

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