ath9k: change beacon allocation to prefer the first beacon slot

This fixes IBSS beacon transmissions without VEOL enabled

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index c8a4558f79ba..77face76e05f 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -274,17 +274,11 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
                         avp->av_bslot = 0;
                         for (slot = 0; slot < ATH_BCBUF; slot++)
                                 if (sc->beacon.bslot[slot] == NULL) {
-                                        /*
-                                         * XXX hack, space out slots to better
-                                         * deal with misses
-                                         */
-                                        if (slot+1 < ATH_BCBUF &&
-                                            sc->beacon.bslot[slot+1] == NULL) {
-                                                avp->av_bslot = slot+1;
-                                                break;
-                                        }
                                         avp->av_bslot = slot;
+
                                         /* NB: keep looking for a double slot */
+                                        if (slot == 0 || !sc->beacon.bslot[slot-1])
+                                                break;
                                 }
                         BUG_ON(sc->beacon.bslot[avp->av_bslot] != NULL);
                         sc->beacon.bslot[avp->av_bslot] = vif;