diff options
author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-04-02 01:26:07 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2009-04-02 01:26:07 -0700 |
commit | da1aa63ec3b4e9b4c5680f06288f57f44caa61b8 (patch) | |
tree | 972f649dc0c35b5347c28bfba06463a3e3fb4d0f /drivers/net | |
parent | 050cc1f568e896a615110109999ed60ef75edf93 (diff) | |
download | kernel_samsung_tuna-da1aa63ec3b4e9b4c5680f06288f57f44caa61b8.zip kernel_samsung_tuna-da1aa63ec3b4e9b4c5680f06288f57f44caa61b8.tar.gz kernel_samsung_tuna-da1aa63ec3b4e9b4c5680f06288f57f44caa61b8.tar.bz2 |
ucc_geth: Pass proper device to DMA routines, otherwise oops happens
The driver should pass a device that actually specifies internal DMA
ops, but currently it passes netdev's device, which is wrong and that
causes following oops:
Kernel BUG at c01c4df8 [verbose debug info unavailable]
Oops: Exception in kernel mode, sig: 5 [#1]
[...]
NIP [c01c4df8] get_new_skb+0x7c/0xf8
LR [c01c4da4] get_new_skb+0x28/0xf8
Call Trace:
[ef82be00] [c01c4da4] get_new_skb+0x28/0xf8 (unreliable)
[ef82be20] [c01c4eb8] rx_bd_buffer_set+0x44/0x98
[ef82be40] [c01c62bc] ucc_geth_startup+0x11b0/0x147c
[ef82be80] [c01c6674] ucc_geth_open+0xec/0x2a4
[ef82bea0] [c02288a4] dev_open+0xc0/0x11c
[...]
Fix this by passing of_device's device that specifies DMA ops in its
archdata.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/ucc_geth.c | 21 | ||||
-rw-r--r-- | drivers/net/ucc_geth.h | 3 |
2 files changed, 13 insertions, 11 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c index a124615..d3f39e8 100644 --- a/drivers/net/ucc_geth.c +++ b/drivers/net/ucc_geth.c @@ -222,10 +222,10 @@ static struct sk_buff *get_new_skb(struct ucc_geth_private *ugeth, (((unsigned)skb->data) & (UCC_GETH_RX_DATA_BUF_ALIGNMENT - 1))); - skb->dev = ugeth->dev; + skb->dev = ugeth->ndev; out_be32(&((struct qe_bd __iomem *)bd)->buf, - dma_map_single(&ugeth->dev->dev, + dma_map_single(ugeth->dev, skb->data, ugeth->ug_info->uf_info.max_rx_buf_length + UCC_GETH_RX_DATA_BUF_ALIGNMENT, @@ -1871,7 +1871,7 @@ static void ucc_geth_memclean(struct ucc_geth_private *ugeth) continue; for (j = 0; j < ugeth->ug_info->bdRingLenTx[i]; j++) { if (ugeth->tx_skbuff[i][j]) { - dma_unmap_single(&ugeth->dev->dev, + dma_unmap_single(ugeth->dev, in_be32(&((struct qe_bd __iomem *)bd)->buf), (in_be32((u32 __iomem *)bd) & BD_LENGTH_MASK), @@ -1899,7 +1899,7 @@ static void ucc_geth_memclean(struct ucc_geth_private *ugeth) bd = ugeth->p_rx_bd_ring[i]; for (j = 0; j < ugeth->ug_info->bdRingLenRx[i]; j++) { if (ugeth->rx_skbuff[i][j]) { - dma_unmap_single(&ugeth->dev->dev, + dma_unmap_single(ugeth->dev, in_be32(&((struct qe_bd __iomem *)bd)->buf), ugeth->ug_info-> uf_info.max_rx_buf_length + @@ -3070,7 +3070,7 @@ static int ucc_geth_start_xmit(struct sk_buff *skb, struct net_device *dev) /* set up the buffer descriptor */ out_be32(&((struct qe_bd __iomem *)bd)->buf, - dma_map_single(&ugeth->dev->dev, skb->data, + dma_map_single(ugeth->dev, skb->data, skb->len, DMA_TO_DEVICE)); /* printk(KERN_DEBUG"skb->data is 0x%x\n",skb->data); */ @@ -3126,7 +3126,7 @@ static int ucc_geth_rx(struct ucc_geth_private *ugeth, u8 rxQ, int rx_work_limit ugeth_vdbg("%s: IN", __func__); - dev = ugeth->dev; + dev = ugeth->ndev; /* collect received buffers */ bd = ugeth->rxBd[rxQ]; @@ -3160,7 +3160,7 @@ static int ucc_geth_rx(struct ucc_geth_private *ugeth, u8 rxQ, int rx_work_limit skb_put(skb, length); /* Tell the skb what kind of packet this is */ - skb->protocol = eth_type_trans(skb, ugeth->dev); + skb->protocol = eth_type_trans(skb, ugeth->ndev); dev->stats.rx_bytes += length; /* Send the packet up the stack */ @@ -3431,7 +3431,7 @@ static int ucc_geth_close(struct net_device *dev) ucc_geth_stop(ugeth); - free_irq(ugeth->ug_info->uf_info.irq, ugeth->dev); + free_irq(ugeth->ug_info->uf_info.irq, ugeth->ndev); netif_stop_queue(dev); @@ -3445,7 +3445,7 @@ static void ucc_geth_timeout_work(struct work_struct *work) struct net_device *dev; ugeth = container_of(work, struct ucc_geth_private, timeout_work); - dev = ugeth->dev; + dev = ugeth->ndev; ugeth_vdbg("%s: IN", __func__); @@ -3755,7 +3755,8 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma memcpy(dev->dev_addr, mac_addr, 6); ugeth->ug_info = ug_info; - ugeth->dev = dev; + ugeth->dev = device; + ugeth->ndev = dev; ugeth->node = np; return 0; diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h index 48fde5a..2f8ee7c 100644 --- a/drivers/net/ucc_geth.h +++ b/drivers/net/ucc_geth.h @@ -1128,7 +1128,8 @@ struct ucc_geth_info { struct ucc_geth_private { struct ucc_geth_info *ug_info; struct ucc_fast_private *uccf; - struct net_device *dev; + struct device *dev; + struct net_device *ndev; struct napi_struct napi; struct work_struct timeout_work; struct ucc_geth __iomem *ug_regs; |