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| author |   Maxim Levitsky <maximlevitsky@gmail.com> | 2007-03-06 02:41:52 -0800 |
|---|---|---|
| committer |   Jeff Garzik <jeff@garzik.org> | 2007-03-06 06:10:02 -0500 |
| commit | 4dc68f3de5e36d72663bb51b94662d2d5db84125 (patch) | |
| tree | f5dd7ac3fce58e5f4e760a1c7b212230321eeeb5 | |
| parent | dmfe: trivial/spelling fixes (diff) | |
| download | linux-dev-4dc68f3de5e36d72663bb51b94662d2d5db84125.tar.xz linux-dev-4dc68f3de5e36d72663bb51b94662d2d5db84125.zip | |
dmfe: fix two bugs
Fix a oops on module removal due to deallocating memory before unregistring
driver Fix a NULL pointer dereference when dev_alloc_skb fails
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Valerie Henson <val_henson@linux.intel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/net/tulip/dmfe.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/tulip/dmfe.c b/drivers/net/tulip/dmfe.c index fc4a2125b501..afd5e527032b 100644 --- a/drivers/net/tulip/dmfe.c +++ b/drivers/net/tulip/dmfe.c @@ -501,14 +501,17 @@ static void __devexit dmfe_remove_one (struct pci_dev *pdev) DMFE_DBUG(0, "dmfe_remove_one()", 0); if (dev) { + + unregister_netdev(dev); + pci_free_consistent(db->pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20, db->desc_pool_ptr, db->desc_pool_dma_ptr); pci_free_consistent(db->pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4, db->buf_pool_ptr, db->buf_pool_dma_ptr); - unregister_netdev(dev); pci_release_regions(pdev); free_netdev(dev); /* free board information */ + pci_set_drvdata(pdev, NULL); } @@ -927,7 +930,7 @@ static inline u32 cal_CRC(unsigned char * Data, unsigned int Len, u8 flag) static void dmfe_rx_packet(struct DEVICE *dev, struct dmfe_board_info * db) { struct rx_desc *rxptr; - struct sk_buff *skb; + struct sk_buff *skb, *newskb; int rxlen; u32 rdes0; @@ -980,9 +983,11 @@ static void dmfe_rx_packet(struct DEVICE *dev, struct dmfe_board_info * db) } else { /* Good packet, send to upper layer */ /* Shorst packet used new SKB */ - if ( (rxlen < RX_COPY_SIZE) && - ( (skb = dev_alloc_skb(rxlen + 2) ) - != NULL) ) { + if ((rxlen < RX_COPY_SIZE) && + ((newskb = dev_alloc_skb(rxlen + 2)) + != NULL)) { + + skb = newskb; /* size less than COPY_SIZE, allocate a rxlen SKB */ skb->dev = dev; skb_reserve(skb, 2); /* 16byte align */ |