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bnx2: Prevent ethtool -s from crashing when device is down.

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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 <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2008-07-14 22:37:21 -07:00 committed by David S. Miller
parent 925068dcdc
commit d6b1448695
1 changed files with 12 additions and 1 deletions
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13
drivers/net/bnx2.c
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@ -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);