From: Christoph Hellwig <hch@lst.de>
Date: Mon, 26 Aug 2019 12:57:22 +0200
Subject: [PATCH] sata_nv: use dma_set_mask_and_coherent
Git-commit: 51872b6606eb52a5c8b82e79c644d352fdb41d04
Patch-mainline: v5.4-rc1
References: bsc#1175995,jsc#SLE-15608
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>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/ata/sata_nv.c | 10 +++-------
1 file 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,
--
2.16.4