[PATCH 2.6.12-rc2 2/3] tg3: Refresh hw index in tg3_rx()

["Michael Chan" <mchan@xxxxxxxxxxxx>]

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@xxxxxxxxxxxx>

diff -Nru c/drivers/net/tg3.c d/drivers/net/tg3.c
--- c/drivers/net/tg3.c 2005-04-25 12:32:44.000000000 -0700
+++ d/drivers/net/tg3.c 2005-04-25 12:39:46.000000000 -0700
@@ -2802,6 +2802,12 @@
 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. */