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sata_nv: 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>
This commit is contained in:
Christoph Hellwig 2019-08-26 12:57:22 +02:00 committed by Jens Axboe
parent 496d4575e7
commit 51872b6606
1 changed files with 3 additions and 7 deletions
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10
drivers/ata/sata_nv.c
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@ -1122,14 +1122,10 @@ static int nv_adma_port_start(struct ata_port *ap)
/*
* Now that the legacy PRD and padding buffer are allocated we can
* try to raise the DMA mask to allocate the CPB/APRD table.
* raise the DMA mask to allocate the CPB/APRD table.
*/
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (rc) {
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (rc)
return rc;
}
dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
pp->adma_dma_mask = *dev->dma_mask;
mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,