tg3: Futureproof the loopback test

There are other multiqueue modes 5717 and 5719 devices can assume.  This
patch makes sure that the loopback test is safe, should those other
modes be enabled in the future.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 3b275663bbd8..3c9f95dd61e0 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10647,7 +10647,8 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
         tnapi = &tp->napi[0];
         rnapi = &tp->napi[0];
         if (tp->irq_cnt > 1) {
-                rnapi = &tp->napi[1];
+                if (tp->tg3_flags3 & TG3_FLG3_ENABLE_RSS)
+                        rnapi = &tp->napi[1];
                 if (tp->tg3_flags3 & TG3_FLG3_ENABLE_TSS)
                         tnapi = &tp->napi[1];
         }