diff options
| -rw-r--r-- | net/wireless/nl80211.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 88a530f707e6..130fc2561bac 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1906,24 +1906,42 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) int r; char *data = NULL; - if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) - return -EINVAL; + /* + * You should only get this when cfg80211 hasn't yet initialized + * completely when built-in to the kernel right between the time + * window between nl80211_init() and regulatory_init(), if that is + * even possible. + */ + mutex_lock(&cfg80211_mutex); + if (unlikely(!cfg80211_regdomain)) { + r = -EINPROGRESS; + goto out; + } + + if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) { + r = -EINVAL; + goto out; + } data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); #ifdef CONFIG_WIRELESS_OLD_REGULATORY /* We ignore world regdom requests with the old regdom setup */ - if (is_world_regdom(data)) - return -EINVAL; + if (is_world_regdom(data)) { + r = -EINVAL; + goto out; + } #endif - mutex_lock(&cfg80211_mutex); r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY); - mutex_unlock(&cfg80211_mutex); - /* This means the regulatory domain was already set, however + /* + * This means the regulatory domain was already set, however * we don't want to confuse userspace with a "successful error" - * message so lets just treat it as a success */ + * message so lets just treat it as a success + */ if (r == -EALREADY) r = 0; +out: + mutex_unlock(&cfg80211_mutex); return r; } |