netdev - [PATCH net-next 23/40] net: fec: don't set cbd

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Date:	Thu, 28 Jan 2016 14:25:47 -0700
From:	Troy Kisky <troy.kisky@...ndarydevices.com>
To:	netdev@...r.kernel.org, davem@...emloft.net, B38611@...escale.com
Cc:	fabio.estevam@...escale.com, l.stach@...gutronix.de,
	andrew@...n.ch, tremyfr@...il.com, linux@....linux.org.uk,
	linux-arm-kernel@...ts.infradead.org, laci@...ndarydevices.com,
	shawnguo@...nel.org, Troy Kisky <troy.kisky@...ndarydevices.com>
Subject: [PATCH net-next 23/40] net: fec: don't set cbd_bufaddr unless no mapping error

Signed-off-by: Troy Kisky <troy.kisky@...ndarydevices.com>
---
 drivers/net/ethernet/freescale/fec_main.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index da2e3c530..29c5781 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -597,7 +597,7 @@ fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq,
 	int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
 	struct bufdesc_ex *ebdp = container_of(bdp, struct bufdesc_ex, desc);
 	void *bufaddr;
-	unsigned long dmabuf;
+	dma_addr_t dmabuf;
 	unsigned short status;
 	unsigned int estatus = 0;
 
@@ -1287,19 +1287,21 @@ fec_enet_new_rxbdp(struct net_device *ndev, struct bufdesc *bdp, struct sk_buff
 {
 	struct  fec_enet_private *fep = netdev_priv(ndev);
 	int off;
+	dma_addr_t dmabuf;
 
 	off = ((unsigned long)skb->data) & fep->rx_align;
 	if (off)
 		skb_reserve(skb, fep->rx_align + 1 - off);
 
-	bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, skb->data,
-					  FEC_ENET_RX_FRSIZE - fep->rx_align,
-					  DMA_FROM_DEVICE);
-	if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) {
+	dmabuf = dma_map_single(&fep->pdev->dev, skb->data,
+				FEC_ENET_RX_FRSIZE - fep->rx_align,
+				DMA_FROM_DEVICE);
+	if (dma_mapping_error(&fep->pdev->dev, dmabuf)) {
 		if (net_ratelimit())
 			netdev_err(ndev, "Rx DMA memory map failed\n");
 		return -ENOMEM;
 	}
+	bdp->cbd_bufaddr = dmabuf;
 
 	return 0;
 }
-- 
2.5.0