Title: [7700] branches/2009R1/drivers/net/bfin_mac.c: Avoid tx skb overflows the tx DMA ring.
- Revision
- 7700
- Author
- sonicz
- Date
- 2009-10-22 05:41:09 -0400 (Thu, 22 Oct 2009)
Log Message
Avoid tx skb overflows the tx DMA ring.
Modified Paths
Diff
Modified: branches/2009R1/drivers/net/bfin_mac.c (7699 => 7700)
--- branches/2009R1/drivers/net/bfin_mac.c 2009-10-22 09:39:52 UTC (rev 7699)
+++ branches/2009R1/drivers/net/bfin_mac.c 2009-10-22 09:41:09 UTC (rev 7700)
@@ -624,6 +624,10 @@
{
u16 *data;
u32 data_align = (u32)(skb->data) & 0x3;
+
+ if (current_tx_ptr->next == tx_list_head)
+ return NETDEV_TX_BUSY;
+
current_tx_ptr->skb = skb;
if (data_align == 0x2) {
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