From 11b08be830078c1cc4af484d0f85c3a010319c97 Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Mon, 10 May 2010 14:59:31 +0000 Subject: e1000e: bad state after running ethtool diagnostics with AMT enabled When running ethtool online diagnostics with no open interface, there is a short period of time where the driver relinquishes control of the adapter during which time AMT (manageability firmware) can put the adapter into an unknown state resulting in such things as link test failure, hardware hang, reporting an incorrect link speed, etc. Resetting the adapter during an open() resolves this by putting the adapter into a quiescent state. Signed-off-by: Bruce Allan Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/ethtool.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/net/e1000e/ethtool.c') diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c index 6ff376cfe13..2c521218102 100644 --- a/drivers/net/e1000e/ethtool.c +++ b/drivers/net/e1000e/ethtool.c @@ -1737,6 +1737,12 @@ static void e1000_diag_test(struct net_device *netdev, if (if_running) dev_open(netdev); } else { + if (!if_running && (adapter->flags & FLAG_HAS_AMT)) { + clear_bit(__E1000_TESTING, &adapter->state); + dev_open(netdev); + set_bit(__E1000_TESTING, &adapter->state); + } + e_info("online testing starting\n"); /* Online tests */ if (e1000_link_test(adapter, &data[4])) @@ -1748,6 +1754,9 @@ static void e1000_diag_test(struct net_device *netdev, data[2] = 0; data[3] = 0; + if (!if_running && (adapter->flags & FLAG_HAS_AMT)) + dev_close(netdev); + clear_bit(__E1000_TESTING, &adapter->state); } msleep_interruptible(4 * 1000); -- cgit v1.2.3-70-g09d2