From 461cadbc62b098b49b55de10605d330c8b494889 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Tue, 31 Mar 2009 20:16:52 +0000 Subject: [PATCH] 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 Reviewed-by: Becky Bruce Signed-off-by: David S. Miller --- drivers/net/fec_mpc52xx.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c index cd8e98b45ec5..024b10a0bec8 100644 --- a/drivers/net/fec_mpc52xx.c +++ b/drivers/net/fec_mpc52xx.c @@ -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); -- GitLab