linux-kernel - [PATCH 10/18] smc911x: pass struct device to DMA API functions

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Message-Id: <20190201084801.10983-11-hch@lst.de>
Date:   Fri,  1 Feb 2019 09:47:53 +0100
From:   Christoph Hellwig <hch@....de>
To:     John Crispin <john@...ozen.org>, Vinod Koul <vkoul@...nel.org>,
        Dmitry Tarnyagin <dmitry.tarnyagin@...kless.no>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Felipe Balbi <balbi@...nel.org>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        netdev@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-fbdev@...r.kernel.org, alsa-devel@...a-project.org
Cc:     iommu@...ts.linux-foundation.org
Subject: [PATCH 10/18] smc911x: pass struct device to DMA API functions

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@....de>
---
 drivers/net/ethernet/smsc/smc911x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/smsc/smc911x.c b/drivers/net/ethernet/smsc/smc911x.c
index 8355dfbb8ec3..b550e624500d 100644
--- a/drivers/net/ethernet/smsc/smc911x.c
+++ b/drivers/net/ethernet/smsc/smc911x.c
@@ -1188,7 +1188,7 @@ smc911x_tx_dma_irq(void *data)
 
 	DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "TX DMA irq handler\n");
 	BUG_ON(skb == NULL);
-	dma_unmap_single(NULL, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE);
+	dma_unmap_single(lp->dev, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE);
 	netif_trans_update(dev);
 	dev_kfree_skb_irq(skb);
 	lp->current_tx_skb = NULL;
@@ -1219,7 +1219,7 @@ smc911x_rx_dma_irq(void *data)
 
 	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
 	DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev, "RX DMA irq handler\n");
-	dma_unmap_single(NULL, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE);
+	dma_unmap_single(lp->dev, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE);
 	BUG_ON(skb == NULL);
 	lp->current_rx_skb = NULL;
 	PRINT_PKT(skb->data, skb->len);
-- 
2.20.1