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- From 74e0deb89a8ba27c132b1f0e08643e215b5c1f92 Mon Sep 17 00:00:00 2001
- From: Christoph Hellwig <[email protected]>
- Date: Mon, 11 Feb 2019 14:20:00 +0100
- Subject: [PATCH] lantiq_etop: 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.
- Note this driver seems to lack dma_unmap_* calls entirely, but fixing
- that is left for another time.
- Signed-off-by: Christoph Hellwig <[email protected]>
- Signed-off-by: David S. Miller <[email protected]>
- ---
- drivers/net/ethernet/lantiq_etop.c | 6 ++++--
- 1 file changed, 4 insertions(+), 2 deletions(-)
- --- a/drivers/net/ethernet/lantiq_etop.c
- +++ b/drivers/net/ethernet/lantiq_etop.c
- @@ -112,10 +112,12 @@ struct ltq_etop_priv {
- static int
- ltq_etop_alloc_skb(struct ltq_etop_chan *ch)
- {
- + struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
- +
- ch->skb[ch->dma.desc] = netdev_alloc_skb(ch->netdev, MAX_DMA_DATA_LEN);
- if (!ch->skb[ch->dma.desc])
- return -ENOMEM;
- - ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(NULL,
- + ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(&priv->pdev->dev,
- ch->skb[ch->dma.desc]->data, MAX_DMA_DATA_LEN,
- DMA_FROM_DEVICE);
- ch->dma.desc_base[ch->dma.desc].addr =
- @@ -493,7 +495,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
- netif_trans_update(dev);
-
- spin_lock_irqsave(&priv->lock, flags);
- - desc->addr = ((unsigned int) dma_map_single(NULL, skb->data, len,
- + desc->addr = ((unsigned int) dma_map_single(&priv->pdev->dev, skb->data, len,
- DMA_TO_DEVICE)) - byte_offset;
- wmb();
- desc->ctl = LTQ_DMA_OWN | LTQ_DMA_SOP | LTQ_DMA_EOP |
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