mac80211: Fix initial hardware configuration

On the initial device-open we need to defer the hardware reconfiguration
after we incremented the open_count, because the hw_config checks this flag
and won't call the lowlevel driver in case it is zero.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index 67b7c75..28bcdf9 100644 (file)
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -165,6 +165,7 @@ static int ieee80211_open(struct net_device *dev)
        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
        struct ieee80211_if_init_conf conf;
        int res;
+       bool need_hw_reconfig = 0;
 
        sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
@@ -218,7 +219,7 @@ static int ieee80211_open(struct net_device *dev)
                        res = local->ops->start(local_to_hw(local));
                if (res)
                        return res;
-               ieee80211_hw_config(local);
+               need_hw_reconfig = 1;
                ieee80211_led_radio(local, local->hw.conf.radio_enabled);
        }
 
@@ -282,6 +283,8 @@ static int ieee80211_open(struct net_device *dev)
                atomic_inc(&local->iff_promiscs);
 
        local->open_count++;
+       if (need_hw_reconfig)
+               ieee80211_hw_config(local);
 
        netif_start_queue(dev);