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>

diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index c8a4558..77face7 100644 (file)
--- 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;