From 02d5cfff22e3796f3ecf0b4b93519f952223fd89 Mon Sep 17 00:00:00 2001 From: Leendert van Doorn Date: Mon, 13 Jun 2016 08:14:42 -0500 Subject: [PATCH] [tg3] Add missing memory barrier ARM64 has a weaker memory order model than x86. The missing memory barrier caused phy initialization notification to be delayed beyond the link-wait timeout (15 secs). Signed-off-by: Leendert van Doorn Signed-off-by: Michael Brown --- src/drivers/net/tg3/tg3.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/drivers/net/tg3/tg3.c b/src/drivers/net/tg3/tg3.c index 824c9b1c0..1bed06649 100644 --- a/src/drivers/net/tg3/tg3.c +++ b/src/drivers/net/tg3/tg3.c @@ -486,6 +486,8 @@ static void tg3_poll(struct net_device *dev) */ tp->hw_status->status &= ~SD_STATUS_UPDATED; + mb(); + tg3_poll_link(tp); tg3_tx_complete(dev); tg3_rx_complete(dev);