mac80211: dont advertise WEP if unavailable

When WEP is unavailable, don't advertise it
to cfg80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 06b9608a2130..0afccda42a24 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -536,6 +536,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
         int channels, max_bitrates;
         bool supp_ht;
         static const u32 cipher_suites[] = {
+                /* keep WEP first, it may be removed below */
                 WLAN_CIPHER_SUITE_WEP40,
                 WLAN_CIPHER_SUITE_WEP104,
                 WLAN_CIPHER_SUITE_TKIP,
@@ -623,6 +624,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
         local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
         if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
                 local->hw.wiphy->n_cipher_suites--;
+        if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
+                local->hw.wiphy->cipher_suites += 2;
+                local->hw.wiphy->n_cipher_suites -= 2;
+        }
 
         result = wiphy_register(local->hw.wiphy);
         if (result < 0)