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net/fec_mpc52xx: fix BUG on missing dma_ops 

The driver triggers a BUG_ON() when allocating DMA buffers because the
arch/powerpc dma_ops aren't in the net_device's struct device.  This
patch fixes the problem by using the parent of_device which does have
the correct dma_ops set.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Grant Likely 2009-03-31 20:16:52 +00:00 коммит произвёл David S. Miller
Родитель fa9a86ddc8
Коммит 461cadbc62
1 изменённых файлов: 12 добавлений и 7 удалений
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19
drivers/net/fec_mpc52xx.c
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@ -129,7 +129,8 @@ static void mpc52xx_fec_free_rx_buffers(struct net_device *dev, struct bcom_task
struct sk_buff *skb;
skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len,
DMA_FROM_DEVICE);
kfree_skb(skb);
}
}
@ -150,7 +151,7 @@ static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, struct bcom_task
bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk);
bd->status = FEC_RX_BUFFER_SIZE;
bd->skb_pa = dma_map_single(&dev->dev, skb->data,
bd->skb_pa = dma_map_single(dev->dev.parent, skb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(rxtsk, skb);
@ -388,7 +389,8 @@ static int mpc52xx_fec_hard_start_xmit(struct sk_buff *skb, struct net_device *d
bcom_prepare_next_buffer(priv->tx_dmatsk);
bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC;
bd->skb_pa = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, skb->len,
DMA_TO_DEVICE);
bcom_submit_next_buffer(priv->tx_dmatsk, skb);
@ -430,7 +432,8 @@ static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id)
struct bcom_fec_bd *bd;
skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
(struct bcom_bd **)&bd);
dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE);
dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len,
DMA_TO_DEVICE);
dev_kfree_skb_irq(skb);
}
@ -455,7 +458,8 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status,
(struct bcom_bd **)&bd);
dma_unmap_single(&dev->dev, bd->skb_pa, rskb->len, DMA_FROM_DEVICE);
dma_unmap_single(dev->dev.parent, bd->skb_pa, rskb->len,
DMA_FROM_DEVICE);
/* Test for errors in received frame */
if (status & BCOM_FEC_RX_BD_ERRORS) {
@ -464,7 +468,8 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
bcom_prepare_next_buffer(priv->rx_dmatsk);
bd->status = FEC_RX_BUFFER_SIZE;
bd->skb_pa = dma_map_single(&dev->dev, rskb->data,
bd->skb_pa = dma_map_single(dev->dev.parent,
rskb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
@ -499,7 +504,7 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
bcom_prepare_next_buffer(priv->rx_dmatsk);
bd->status = FEC_RX_BUFFER_SIZE;
bd->skb_pa = dma_map_single(&dev->dev, skb->data,
bd->skb_pa = dma_map_single(dev->dev.parent, skb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(priv->rx_dmatsk, skb);