lkml.org 
[lkml]   [2019]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/8] pxa168_eth: pass struct device to DMA API functions
Date
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.

Note that this driver seems to entirely lack dma_map_single error
handling, but that is left for another time.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/net/ethernet/marvell/pxa168_eth.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
index f8a6d6e3cb7a..35f2142aac5e 100644
--- a/drivers/net/ethernet/marvell/pxa168_eth.c
+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
@@ -201,6 +201,7 @@ struct tx_desc {
};

struct pxa168_eth_private {
+ struct platform_device *pdev;
int port_num; /* User Ethernet port number */
int phy_addr;
int phy_speed;
@@ -331,7 +332,7 @@ static void rxq_refill(struct net_device *dev)
used_rx_desc = pep->rx_used_desc_q;
p_used_rx_desc = &pep->p_rx_desc_area[used_rx_desc];
size = skb_end_pointer(skb) - skb->data;
- p_used_rx_desc->buf_ptr = dma_map_single(NULL,
+ p_used_rx_desc->buf_ptr = dma_map_single(&pep->pdev->dev,
skb->data,
size,
DMA_FROM_DEVICE);
@@ -743,7 +744,7 @@ static int txq_reclaim(struct net_device *dev, int force)
netdev_err(dev, "Error in TX\n");
dev->stats.tx_errors++;
}
- dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
+ dma_unmap_single(&pep->pdev->dev, addr, count, DMA_TO_DEVICE);
if (skb)
dev_kfree_skb_irq(skb);
released++;
@@ -805,7 +806,7 @@ static int rxq_process(struct net_device *dev, int budget)
if (rx_next_curr_desc == rx_used_desc)
pep->rx_resource_err = 1;
pep->rx_desc_count--;
- dma_unmap_single(NULL, rx_desc->buf_ptr,
+ dma_unmap_single(&pep->pdev->dev, rx_desc->buf_ptr,
rx_desc->buf_size,
DMA_FROM_DEVICE);
received_packets++;
@@ -1274,7 +1275,8 @@ pxa168_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
length = skb->len;
pep->tx_skb[tx_index] = skb;
desc->byte_cnt = length;
- desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
+ desc->buf_ptr = dma_map_single(&pep->pdev->dev, skb->data, length,
+ DMA_TO_DEVICE);

skb_tx_timestamp(skb);

@@ -1528,6 +1530,7 @@ static int pxa168_eth_probe(struct platform_device *pdev)
if (err)
goto err_free_mdio;

+ pep->pdev = pdev;
SET_NETDEV_DEV(dev, &pdev->dev);
pxa168_init_hw(pep);
err = register_netdev(dev);
--
2.20.1
\
 
 \ /
  Last update: 2019-02-11 14:21    [W:0.067 / U:1.904 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site