myri10ge: Remove nonsensical limit in the tx done routine

Remove nonsensical limit in the tx done routine. Specifically,
the loop will always terminate after processing <= 1 rings worth
of frames, as the mcp index is not refetched, so the removed
conditional could never be true.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index e1732c164a40..deca65330b0f 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1060,7 +1060,6 @@ static inline void myri10ge_tx_done(struct myri10ge_priv *mgp, int mcp_index)
         struct myri10ge_tx_buf *tx = &mgp->tx;
         struct sk_buff *skb;
         int idx, len;
-        int limit = 0;
 
         while (tx->pkt_done != mcp_index) {
                 idx = tx->done & tx->mask;
@@ -1091,11 +1090,6 @@ static inline void myri10ge_tx_done(struct myri10ge_priv *mgp, int mcp_index)
                                                               bus), len,
                                                PCI_DMA_TODEVICE);
                 }
-
-                /* limit potential for livelock by only handling
-                 * 2 full tx rings per call */
-                if (unlikely(++limit > 2 * tx->mask))
-                        break;
         }
         /* start the queue if we've stopped it */
         if (netif_queue_stopped(mgp->dev)