diff options
Diffstat (limited to 'net/batman-adv/bat_sysfs.c')
| -rw-r--r-- | net/batman-adv/bat_sysfs.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c index e449bf6353e0..497a0700cc3c 100644 --- a/net/batman-adv/bat_sysfs.c +++ b/net/batman-adv/bat_sysfs.c @@ -488,22 +488,24 @@ static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr, (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0)) goto out; + if (!rtnl_trylock()) { + ret = -ERESTARTSYS; + goto out; + } + if (status_tmp == IF_NOT_IN_USE) { - rtnl_lock(); hardif_disable_interface(hard_iface); - rtnl_unlock(); - goto out; + goto unlock; } /* if the interface already is in use */ - if (hard_iface->if_status != IF_NOT_IN_USE) { - rtnl_lock(); + if (hard_iface->if_status != IF_NOT_IN_USE) hardif_disable_interface(hard_iface); - rtnl_unlock(); - } ret = hardif_enable_interface(hard_iface, buff); +unlock: + rtnl_unlock(); out: hardif_free_ref(hard_iface); return ret; |