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authorRon Mercer <ron.mercer@qlogic.com>2009-02-12 16:38:34 -0800
committerDavid S. Miller <davem@davemloft.net>2009-02-12 16:38:34 -0800
commit79d2b29e8ab2bd460b07ff783d679d6cd3032769 (patch)
tree1636e6b53a7fcc3a989fb73dcc2e5bbb6d92adec
parentdef48b6e328c2ff9954c13e13ba8e1a03f0bde32 (diff)
downloadlinux-stericsson-79d2b29e8ab2bd460b07ff783d679d6cd3032769.tar.gz
qlge: bugfix: Add missing rx buf clean index on early exit.
The large receive buffer queue is not properly tracking the current index in the case where an early exit occurs. This can happen when a page alloc or dma mapping fails. If this occurs the queue will get out of sync and invalid indexes can be written to the hardware. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/qlge/qlge_main.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 3ab03695aaf0..8ea72dc60f79 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -898,6 +898,7 @@ static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
lbq_desc->index);
lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
if (lbq_desc->p.lbq_page == NULL) {
+ rx_ring->lbq_clean_idx = clean_idx;
QPRINTK(qdev, RX_STATUS, ERR,
"Couldn't get a page.\n");
return;
@@ -907,6 +908,7 @@ static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
0, PAGE_SIZE,
PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(qdev->pdev, map)) {
+ rx_ring->lbq_clean_idx = clean_idx;
put_page(lbq_desc->p.lbq_page);
lbq_desc->p.lbq_page = NULL;
QPRINTK(qdev, RX_STATUS, ERR,