1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 135c0987deae..e136bae61970 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -3380,7 +3380,7 @@ next_pkt:
                 }
 next_pkt_nopost:
                 sw_idx++;
-                sw_idx %= TG3_RX_RCB_RING_SIZE(tp);
+                sw_idx &= (TG3_RX_RCB_RING_SIZE(tp) - 1);
 
                 /* Refresh hw_idx to see if there is new work */
                 if (sw_idx == hw_idx) {