wlcore: correctly check state before regdomain conf

The wlcore state was checked without the mutex being taken. This leads
to WARN_ONs sometimes if a notification arrives when the driver
is on, but the mutex is only taken after it is off. This usually
happens if stopping the driver while connected to a network.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 43865d1..248daa9 100644 (file)
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -108,8 +108,7 @@ static void wl1271_reg_notify(struct wiphy *wiphy,
 
        }
 
-       if (likely(wl->state == WLCORE_STATE_ON))
-               wlcore_regdomain_config(wl);
+       wlcore_regdomain_config(wl);
 }
 
 static int wl1271_set_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif,
@@ -3364,6 +3363,10 @@ void wlcore_regdomain_config(struct wl1271 *wl)
                return;
 
        mutex_lock(&wl->mutex);
+
+       if (unlikely(wl->state != WLCORE_STATE_ON))
+               goto out;
+
        ret = wl1271_ps_elp_wakeup(wl);
        if (ret < 0)
                goto out;