linux-kernel - [PATCH] dma: dw: switch from 'pci_' to 'dma

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Message-Id: <1631863065-10181-1-git-send-email-wangqing@vivo.com>
Date:   Fri, 17 Sep 2021 00:17:45 -0700
From:   Qing Wang <wangqing@...o.com>
To:     Viresh Kumar <vireshk@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Vinod Koul <vkoul@...nel.org>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Qing Wang <wangqing@...o.com>
Subject: [PATCH] dma: dw: switch from 'pci_' to 'dma_' API

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below.
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

While at it, some 'dma_set_mask()/dma_set_coherent_mask()' have been
updated to a much less verbose 'dma_set_mask_and_coherent()'.

This type of patches has been going on for a long time, I plan to 
clean it up in the near future. If needed, see post from 
Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4

Signed-off-by: Qing Wang <wangqing@...o.com>
---
 drivers/dma/dw/pci.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/dma/dw/pci.c b/drivers/dma/dw/pci.c
index 1142aa6..1dec1ae
--- a/drivers/dma/dw/pci.c
+++ b/drivers/dma/dw/pci.c
@@ -32,11 +32,7 @@ static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-	if (ret)
-		return ret;
-
-	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 	if (ret)
 		return ret;
 
-- 
2.7.4