diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 93b97c6b8a6..681b738c6da 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -2867,6 +2867,9 @@ e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, tx_ring->next_to_use = i; writel(i, adapter->hw.hw_addr + tx_ring->tdt); + /* we need this if more than one processor can write to our tail + * at a time, it syncronizes IO on IA64/Altix systems */ + mmiowb(); } /** |