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From: Christoph Hellwig <hch@lst.de>
To: John Crispin <john@phrozen.org>, Vinod Koul <vkoul@kernel.org>,
	Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
	Felipe Balbi <balbi@kernel.org>,
	linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
	dmaengine@vger.kernel.org, netdev@vger.kernel.org,
	linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org,
	alsa-devel@alsa-project.org
Cc: iommu@lists.linux-foundation.org
Subject: [PATCH 08/18] moxart_ether: pass struct device to DMA API functions
Date: Fri,  1 Feb 2019 09:47:51 +0100	[thread overview]
Message-ID: <20190201084801.10983-9-hch@lst.de> (raw)
In-Reply-To: <20190201084801.10983-1-hch@lst.de>

The DMA API generally relies on a struct device to work properly, and
only barely works without one for legacy reasons.  Pass the easily
available struct device from the platform_device to remedy this.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/net/ethernet/moxa/moxart_ether.c | 11 +++++++----
 drivers/net/ethernet/moxa/moxart_ether.h |  1 +
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index b34055ac476f..00dec0ffb11b 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -81,11 +81,13 @@ static void moxart_mac_free_memory(struct net_device *ndev)
 				 priv->rx_buf_size, DMA_FROM_DEVICE);
 
 	if (priv->tx_desc_base)
-		dma_free_coherent(NULL, TX_REG_DESC_SIZE * TX_DESC_NUM,
+		dma_free_coherent(&priv->pdev->dev,
+				  TX_REG_DESC_SIZE * TX_DESC_NUM,
 				  priv->tx_desc_base, priv->tx_base);
 
 	if (priv->rx_desc_base)
-		dma_free_coherent(NULL, RX_REG_DESC_SIZE * RX_DESC_NUM,
+		dma_free_coherent(&priv->pdev->dev,
+				  RX_REG_DESC_SIZE * RX_DESC_NUM,
 				  priv->rx_desc_base, priv->rx_base);
 
 	kfree(priv->tx_buf_base);
@@ -476,6 +478,7 @@ static int moxart_mac_probe(struct platform_device *pdev)
 
 	priv = netdev_priv(ndev);
 	priv->ndev = ndev;
+	priv->pdev = pdev;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ndev->base_addr = res->start;
@@ -491,7 +494,7 @@ static int moxart_mac_probe(struct platform_device *pdev)
 	priv->tx_buf_size = TX_BUF_SIZE;
 	priv->rx_buf_size = RX_BUF_SIZE;
 
-	priv->tx_desc_base = dma_alloc_coherent(NULL, TX_REG_DESC_SIZE *
+	priv->tx_desc_base = dma_alloc_coherent(&pdev->dev, TX_REG_DESC_SIZE *
 						TX_DESC_NUM, &priv->tx_base,
 						GFP_DMA | GFP_KERNEL);
 	if (!priv->tx_desc_base) {
@@ -499,7 +502,7 @@ static int moxart_mac_probe(struct platform_device *pdev)
 		goto init_fail;
 	}
 
-	priv->rx_desc_base = dma_alloc_coherent(NULL, RX_REG_DESC_SIZE *
+	priv->rx_desc_base = dma_alloc_coherent(&pdev->dev, RX_REG_DESC_SIZE *
 						RX_DESC_NUM, &priv->rx_base,
 						GFP_DMA | GFP_KERNEL);
 	if (!priv->rx_desc_base) {
diff --git a/drivers/net/ethernet/moxa/moxart_ether.h b/drivers/net/ethernet/moxa/moxart_ether.h
index bee608b547d1..bf4c3029cd0c 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.h
+++ b/drivers/net/ethernet/moxa/moxart_ether.h
@@ -292,6 +292,7 @@
 #define LINK_STATUS		0x4
 
 struct moxart_mac_priv_t {
+	struct platform_device *pdev;
 	void __iomem *base;
 	unsigned int reg_maccr;
 	unsigned int reg_imr;
-- 
2.20.1


  parent reply	other threads:[~2019-02-01  8:50 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-01  8:47 don't pass a NULL struct device to DMA API functions Christoph Hellwig
2019-02-01  8:47 ` [PATCH 01/18] MIPS: lantiq: pass " Christoph Hellwig
2019-02-07 23:29   ` Paul Burton
2019-02-12  7:45     ` Christoph Hellwig
2019-02-12 17:41   ` Paul Burton
2019-02-01  8:47 ` [PATCH 02/18] dmaengine: imx-sdma: " Christoph Hellwig
2019-02-02 10:11   ` Vinod Koul
2019-02-02 17:21     ` Christoph Hellwig
2019-02-01  8:47 ` [PATCH 03/18] net: caif: " Christoph Hellwig
2019-02-01 13:53   ` Robin Murphy
2019-02-01 16:10     ` Christoph Hellwig
2019-02-01  8:47 ` [PATCH 04/18] au1000_eth: " Christoph Hellwig
2019-02-01  8:47 ` [PATCH 05/18] macb_main: " Christoph Hellwig
2019-02-01 13:34   ` Nicolas.Ferre
2019-02-01  8:47 ` [PATCH 06/18] lantiq_etop: " Christoph Hellwig
2019-02-01  8:47 ` [PATCH 07/18] pxa168_eth: " Christoph Hellwig
2019-02-01  8:47 ` Christoph Hellwig [this message]
2019-02-01  8:47 ` [PATCH 09/18] meth: " Christoph Hellwig
2019-02-01  8:47 ` [PATCH 10/18] smc911x: " Christoph Hellwig
2019-02-01 14:14   ` Robin Murphy
2019-02-01 16:11     ` Christoph Hellwig
2019-02-01  8:47 ` [PATCH 11/18] parport_ip32: " Christoph Hellwig
2019-02-01  8:47 ` [PATCH 12/18] fotg210-udc: remove a bogus dma_sync_single_for_device call Christoph Hellwig
2019-02-01 13:19   ` Felipe Balbi
2019-02-01 16:10     ` Christoph Hellwig
2019-02-11 13:12       ` Christoph Hellwig
2019-02-11 13:30         ` Felipe Balbi
2019-02-01  8:47 ` [PATCH 13/18] fotg210-udc: pass struct device to DMA API functions Christoph Hellwig
2019-02-01 13:20   ` Felipe Balbi
2019-02-01  8:47 ` [PATCH 14/18] da8xx-fb: " Christoph Hellwig
2019-02-01  8:47 ` [PATCH 15/18] gbefb: switch to managed version of the DMA allocator Christoph Hellwig
2019-02-01  8:47 ` [PATCH 16/18] pxa3xx-gcu: pass struct device to dma_mmap_coherent Christoph Hellwig
2019-02-01  8:48 ` [PATCH 17/18] ALSA: hal2: pass struct device to DMA API functions Christoph Hellwig
2019-02-01 13:12   ` [alsa-devel] " Takashi Iwai
2019-02-01 16:09     ` Christoph Hellwig
2019-02-01 16:17       ` Takashi Iwai
2019-02-01  8:48 ` [PATCH 18/18] ALSA: " Christoph Hellwig
2019-02-01 13:13   ` [alsa-devel] " Takashi Iwai
2019-02-01 13:16 ` [alsa-devel] don't pass a NULL " Takashi Iwai
2019-02-01 16:09   ` Christoph Hellwig
2019-02-01 16:18     ` Takashi Iwai

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