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H A Dahci.cdiff b1716871c00dd48a8efa8ee93007490c939fc8c3 Mon Aug 26 05:57:19 CDT 2019 Christoph Hellwig <hch@lst.de> ahci: use dma_set_mask_and_coherent

Use the dma_set_mask_and_coherent helper to set the DMA mask. Rely
on the relatively recent change that setting a larger than required
mask will never fail to avoid the need for the boilerplate 32-bit
fallback code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>