net: illegal_highdma() fix

[cascardo/linux.git] / net / core / dev.c

diff --git a/net/core/dev.c b/net/core/dev.c
index e19cdae..c6b5206 100644 (file)
--- 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)