From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: dave.jiang@intel.com, vkoul@kernel.org
Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH] dmaengine: idxd: Simplify code and axe the use of a deprecated API
Date: Thu, 8 Jul 2021 07:08:26 +0200 [thread overview]
Message-ID: <70c8a3bc67e41c5fefb526ecd64c5174c1e2dc76.1625720835.git.christophe.jaillet@wanadoo.fr> (raw)
The wrappers in include/linux/pci-dma-compat.h should go away.
Replace 'pci_set_dma_mask/pci_set_consistent_dma_mask' by an equivalent
and less verbose 'dma_set_mask_and_coherent()' call.
Even if the code may look different, it should have exactly the same
run-time behavior.
If pci_set_dma_mask(64) fails and pci_set_dma_mask(32) succeeds, then
pci_set_consistent_dma_mask(64) will also fail.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
If needed, see post from Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
---
drivers/dma/idxd/init.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index c8ae41d36040..de300ba38b14 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -637,15 +637,9 @@ static int idxd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
dev_dbg(dev, "Set DMA masks\n");
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (rc)
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
- if (rc)
- goto err;
-
- rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
- if (rc)
- rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (rc)
goto err;
--
2.30.2
next reply other threads:[~2021-07-08 5:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-08 5:08 Christophe JAILLET [this message]
2021-07-08 14:49 ` [PATCH] dmaengine: idxd: Simplify code and axe the use of a deprecated API Dave Jiang
2021-07-14 4:51 ` Vinod Koul
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