diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/net-sysfs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 33f408c24205..53ea262ecafd 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -1694,6 +1694,13 @@ netdev_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) int i; int error = 0; + /* Tx queue kobjects are allowed to be updated when a device is being + * unregistered, but solely to remove queues from qdiscs. Any path + * adding queues should be fixed. + */ + WARN(dev->reg_state == NETREG_UNREGISTERING && new_num > old_num, + "New queues can't be registered after device unregistration."); + for (i = old_num; i < new_num; i++) { error = netdev_queue_add_kobject(dev, i); if (error) { |