mac80211: Allow disabling SGI-20

This allows user-space (wpa_supplicant) to disable
short guard interval (SGI) for 20Mhz.  The SGI-40
disable option is already handled.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 1b087fff93e7..0c0d4cabd76c 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -537,6 +537,7 @@ static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
 
         .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
                                 IEEE80211_HT_CAP_MAX_AMSDU |
+                                IEEE80211_HT_CAP_SGI_20 |
                                 IEEE80211_HT_CAP_SGI_40),
         .mcs = {
                 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,