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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>
This commit is contained in:
Ron Mercer 2009-02-12 16:38:34 -08:00 committed by David S. Miller
parent def48b6e32
commit 79d2b29e8a
1 changed files with 2 additions and 0 deletions
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2
drivers/net/qlge/qlge_main.c
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@ -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,