diff options
Diffstat (limited to 'net/wireless/reg.c')
| -rw-r--r-- | net/wireless/reg.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 1bc8131a5185..8ab65f2afe70 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -750,8 +750,26 @@ static void handle_channel(struct wiphy *wiphy, desired_bw_khz, ®_rule); - if (r) + if (r) { + /* + * We will disable all channels that do not match our + * recieved regulatory rule unless the hint is coming + * from a Country IE and the Country IE had no information + * about a band. The IEEE 802.11 spec allows for an AP + * to send only a subset of the regulatory rules allowed, + * so an AP in the US that only supports 2.4 GHz may only send + * a country IE with information for the 2.4 GHz band + * while 5 GHz is still supported. + */ + if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && + r == -ERANGE) + return; + + REG_DBG_PRINT("cfg80211: Disabling freq %d MHz\n", + chan->center_freq); + chan->flags = IEEE80211_CHAN_DISABLED; return; + } power_rule = ®_rule->power_rule; freq_range = ®_rule->freq_range; |