One of the unlikely error branches has an skb memory leak.
Fix this by handling the error conditions consistently.
Signed-off-by: Linas Vepstas <[EMAIL PROTECTED]>
Cc: James K Lewis <[EMAIL PROTECTED]>
Cc: Arnd Bergmann <[EMAIL PROTECTED]>
----
drivers/net/spider_net.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
Index: linux-2.6.19-git7/drivers/net/spider_net.c
===================================================================
--- linux-2.6.19-git7.orig/drivers/net/spider_net.c 2006-12-06
16:02:58.000000000 -0600
+++ linux-2.6.19-git7/drivers/net/spider_net.c 2006-12-06 16:03:00.000000000
-0600
@@ -884,8 +884,8 @@ spider_net_do_ioctl(struct net_device *n
*
* returns 1 on success, 0 if no packet was passed to the stack
*
- * iommu-unmaps the skb, fills out skb structure and passes the data to the
- * stack. The descriptor state is not changed.
+ * Fills out skb structure and passes the data to the stack.
+ * The descriptor state is not changed.
*/
static int
spider_net_pass_skb_up(struct spider_net_descr *descr,
@@ -900,10 +900,6 @@ spider_net_pass_skb_up(struct spider_net
netdev = card->netdev;
- /* unmap descriptor */
- pci_unmap_single(card->pdev, descr->buf_addr, SPIDER_NET_MAX_FRAME,
- PCI_DMA_FROMDEVICE);
-
/* the cases we'll throw away the packet immediately */
if (data_error & SPIDER_NET_DESTROY_RX_FLAGS) {
if (netif_msg_rx_err(card))
@@ -998,6 +994,11 @@ spider_net_decode_one_descr(struct spide
spin_unlock_irqrestore(&chain->lock, flags);
result = 0;
+
+ /* unmap descriptor */
+ pci_unmap_single(card->pdev, descr->buf_addr,
+ SPIDER_NET_MAX_FRAME, PCI_DMA_FROMDEVICE);
+
if ( (status == SPIDER_NET_DESCR_RESPONSE_ERROR) ||
(status == SPIDER_NET_DESCR_PROTECTION_ERROR) ||
(status == SPIDER_NET_DESCR_FORCE_END) ) {
@@ -1005,8 +1006,6 @@ spider_net_decode_one_descr(struct spide
pr_err("%s: dropping RX descriptor with state %d\n",
card->netdev->name, status);
card->netdev_stats.rx_dropped++;
- pci_unmap_single(card->pdev, descr->buf_addr,
- SPIDER_NET_MAX_FRAME, PCI_DMA_FROMDEVICE);
dev_kfree_skb_irq(descr->skb);
goto refill;
}
@@ -1014,9 +1013,10 @@ spider_net_decode_one_descr(struct spide
if ( (status != SPIDER_NET_DESCR_COMPLETE) &&
(status != SPIDER_NET_DESCR_FRAME_END) ) {
if (netif_msg_rx_err(card))
- pr_err("%s: RX descriptor with state %d\n",
+ pr_err("%s: RX descriptor with unkown state %d\n",
card->netdev->name, status);
card->spider_stats.rx_desc_unk_state++;
+ dev_kfree_skb_irq(descr->skb);
goto refill;
}
-
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