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qlge: bugfix: Add missing rx buf clean index on early exit.

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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,