1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index afd063fe11af..786d668c612e 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -4198,12 +4198,23 @@ static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 
         netif_carrier_off(dev);
         if (netif_running(dev)) {
+                unsigned long flags;
+
                 nv_disable_irq(dev);
                 netif_tx_lock_bh(dev);
-                spin_lock(&np->lock);
+                /* with plain spinlock lockdep complains */
+                spin_lock_irqsave(&np->lock, flags);
                 /* stop engines */
+                /* FIXME:
+                 * this can take some time, and interrupts are disabled
+                 * due to spin_lock_irqsave, but let's hope no daemon
+                 * is going to change the settings very often...
+                 * Worst case:
+                 * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
+                 * + some minor delays, which is up to a second approximately
+                 */
                 nv_stop_rxtx(dev);
-                spin_unlock(&np->lock);
+                spin_unlock_irqrestore(&np->lock, flags);
                 netif_tx_unlock_bh(dev);
         }