netconsole: don't call __netpoll_cleanup() while atomic

[pandora-kernel.git] / drivers / net / netconsole.c

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 37add21..59ac143 100644 (file)
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -666,6 +666,7 @@ static int netconsole_netdev_event(struct notifier_block *this,
                goto done;
 
        spin_lock_irqsave(&target_list_lock, flags);
+restart:
        list_for_each_entry(nt, &target_list, list) {
                netconsole_target_get(nt);
                if (nt->np.dev == dev) {
@@ -678,15 +679,17 @@ static int netconsole_netdev_event(struct notifier_block *this,
                        case NETDEV_UNREGISTER:
                                /*
                                 * rtnl_lock already held
+                                * we might sleep in __netpoll_cleanup()
                                 */
-                               if (nt->np.dev) {
-                                       __netpoll_cleanup(&nt->np);
-                                       dev_put(nt->np.dev);
-                                       nt->np.dev = NULL;
-                               }
+                               spin_unlock_irqrestore(&target_list_lock, flags);
+                               __netpoll_cleanup(&nt->np);
+                               spin_lock_irqsave(&target_list_lock, flags);
+                               dev_put(nt->np.dev);
+                               nt->np.dev = NULL;
                                nt->enabled = 0;
                                stopped = true;
-                               break;
+                               netconsole_target_put(nt);
+                               goto restart;
                        }
                }
                netconsole_target_put(nt);