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>
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index acce6a6..9bbf447 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1010,7 +1010,7 @@
/* 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));
