e1000: explicit locking for two ethtool path functions
Explicitly lock two more ethtool entry points completely instead of the hardware reset only to prevent a race condition. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
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d658266ed6
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1a821ca595
1 changed files with 23 additions and 10 deletions
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@ -183,6 +183,9 @@ e1000_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
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return -EINVAL;
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}
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while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
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msleep(1);
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if (ecmd->autoneg == AUTONEG_ENABLE) {
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hw->autoneg = 1;
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if (hw->media_type == e1000_media_type_fiber)
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@ -199,16 +202,20 @@ e1000_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
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ADVERTISED_TP;
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ecmd->advertising = hw->autoneg_advertised;
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} else
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if (e1000_set_spd_dplx(adapter, ecmd->speed + ecmd->duplex))
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if (e1000_set_spd_dplx(adapter, ecmd->speed + ecmd->duplex)) {
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clear_bit(__E1000_RESETTING, &adapter->flags);
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return -EINVAL;
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}
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/* reset the link */
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if (netif_running(adapter->netdev))
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e1000_reinit_locked(adapter);
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else
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if (netif_running(adapter->netdev)) {
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e1000_down(adapter);
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e1000_up(adapter);
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} else
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e1000_reset(adapter);
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clear_bit(__E1000_RESETTING, &adapter->flags);
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return 0;
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}
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@ -238,9 +245,13 @@ e1000_set_pauseparam(struct net_device *netdev,
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{
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struct e1000_adapter *adapter = netdev_priv(netdev);
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struct e1000_hw *hw = &adapter->hw;
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int retval = 0;
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adapter->fc_autoneg = pause->autoneg;
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while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
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msleep(1);
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if (pause->rx_pause && pause->tx_pause)
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hw->fc = e1000_fc_full;
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else if (pause->rx_pause && !pause->tx_pause)
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@ -253,15 +264,17 @@ e1000_set_pauseparam(struct net_device *netdev,
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hw->original_fc = hw->fc;
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if (adapter->fc_autoneg == AUTONEG_ENABLE) {
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if (netif_running(adapter->netdev))
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e1000_reinit_locked(adapter);
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else
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if (netif_running(adapter->netdev)) {
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e1000_down(adapter);
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e1000_up(adapter);
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} else
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e1000_reset(adapter);
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} else
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return ((hw->media_type == e1000_media_type_fiber) ?
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retval = ((hw->media_type == e1000_media_type_fiber) ?
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e1000_setup_link(hw) : e1000_force_mac_fc(hw));
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return 0;
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clear_bit(__E1000_RESETTING, &adapter->flags);
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return retval;
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}
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static uint32_t
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