From d6b14486953d0e8d1c57db29bf6104cea198b884 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Mon, 14 Jul 2008 22:37:21 -0700 Subject: [PATCH] bnx2: Prevent ethtool -s from crashing when device is down. The device may be in D3-hot state and may crash if we try to configure the speed settings by accessing the registers. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/bnx2.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index ad61cfd2a9ba..e9cfb02bf551 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -6215,6 +6215,12 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) !(bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP)) goto err_out_unlock; + /* If device is down, we can store the settings only if the user + * is setting the currently active port. + */ + if (!netif_running(dev) && cmd->port != bp->phy_port) + goto err_out_unlock; + if (cmd->autoneg == AUTONEG_ENABLE) { autoneg |= AUTONEG_SPEED; @@ -6272,7 +6278,12 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) bp->req_line_speed = req_line_speed; bp->req_duplex = req_duplex; - err = bnx2_setup_phy(bp, cmd->port); + err = 0; + /* If device is down, the new settings will be picked up when it is + * brought up. + */ + if (netif_running(dev)) + err = bnx2_setup_phy(bp, cmd->port); err_out_unlock: spin_unlock_bh(&bp->phy_lock);