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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-04-02 20:34:49 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-02 20:34:49 (GMT) |
| commit | 9092c658bab215b2752fa59d2a36c05b74d1e9e9 (patch) | |
| tree | d8a1606d52ed328fce58ba94b420998998d9863f | |
| parent | ba343c7736b36d62d276e20383588bcf9403d6c6 (diff) | |
| download | linux-9092c658bab215b2752fa59d2a36c05b74d1e9e9.tar.xz | |
net: illegal_highdma() fix
Followup to commit 5acbbd428db47b12f137a8a2aa96b3c0a96b744e
(net: change illegal_highdma to use dma_mask)
If dev->dev.parent is NULL, we should not try to dereference it.
Dont force inline illegal_highdma() as its pretty big now.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/dev.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index e19cdae..c6b5206 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1801,7 +1801,7 @@ EXPORT_SYMBOL(netdev_rx_csum_fault); * 2. No high memory really exists on this machine. */ -static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb) +static int illegal_highdma(struct net_device *dev, struct sk_buff *skb) { #ifdef CONFIG_HIGHMEM int i; @@ -1814,6 +1814,8 @@ static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb) if (PCI_DMA_BUS_IS_PHYS) { struct device *pdev = dev->dev.parent; + if (!pdev) + return 0; for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { dma_addr_t addr = page_to_phys(skb_shinfo(skb)->frags[i].page); if (!pdev->dma_mask || addr + PAGE_SIZE - 1 > *pdev->dma_mask) |