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be2net: fix bad queue traversal in be_rx_q_clean() 

Using "for(tail != head)" to traverse a queue from tail to head
fails in the case of a fully filled queue. Use "for(used != 0)" instead.

Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sathya Perla 2009-08-10 03:43:23 +00:00 committed by David S. Miller
parent a8e9179a7d
commit cdab23b701
1 changed files with 1 additions and 1 deletions
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2
drivers/net/benet/be_main.c
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@ -1010,7 +1010,7 @@ static void be_rx_q_clean(struct be_adapter *adapter)
/* Then free posted rx buffer that were not used */
tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
page_info = get_rx_page_info(adapter, tail);
put_page(page_info->page);
memset(page_info, 0, sizeof(*page_info));