[TG3]: Refresh hw index in tg3_rx()

This patch refreshes the hw rx producer in tg3_rx() so that additional
work posted by the hardware can be processed.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index e53c1dc58d08..92b0e4975135 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -2802,6 +2802,12 @@ next_pkt:
 next_pkt_nopost:
                 sw_idx++;
                 sw_idx %= TG3_RX_RCB_RING_SIZE(tp);
+
+                /* Refresh hw_idx to see if there is new work */
+                if (sw_idx == hw_idx) {
+                        hw_idx = tp->hw_status->idx[0].rx_producer;
+                        rmb();
+                }
         }
 
         /* ACK the status ring. */