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authorChristoph Hellwig <hch@lst.de>2019-08-26 12:57:22 +0200
committerJens Axboe <axboe@kernel.dk>2019-08-26 13:58:58 -0600
commit51872b6606eb52a5c8b82e79c644d352fdb41d04 (patch)
treecd7b43f8a2f31cadccc0930229fadde50636f155 /drivers/ata/sata_nv.c
parent496d4575e7ac57f4ee3457c10be214e6b3ce0bd0 (diff)
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>
Diffstat (limited to 'drivers/ata/sata_nv.c')
-rw-r--r--drivers/ata/sata_nv.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index b44b4b64354c..56946012d113 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -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,