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[tg3] Add missing memory barrier

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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 <leendert@paramecium.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Leendert van Doorn
2016-06-13 08:14:42 -05:00
committed by Michael Brown
parent 188789eb3c
commit 02d5cfff22
1 changed files with 2 additions and 0 deletions
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2
src/drivers/net/tg3/tg3.c
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@@ -486,6 +486,8 @@ static void tg3_poll(struct net_device *dev)
*/ */
tp->hw_status->status &= ~SD_STATUS_UPDATED; tp->hw_status->status &= ~SD_STATUS_UPDATED;
mb();
tg3_poll_link(tp); tg3_poll_link(tp);
tg3_tx_complete(dev); tg3_tx_complete(dev);
tg3_rx_complete(dev); tg3_rx_complete(dev);