wl12xx: protect wl12xx_op_set_rts_threshold()

The function doesn't lock the mutex before sending the acx.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 8feba36ff48d57c4e2606073d08952d964892fd7..7ec174992787aa0f259e5ab958dab69fdbe8bcad 100644 (file)
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -957,11 +957,15 @@ static int wl12xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
        struct wl12xx *wl = hw->priv;
        int ret;
 
+       mutex_lock(&wl->mutex);
+
        ret = wl12xx_acx_rts_threshold(wl, (u16) value);
 
        if (ret < 0)
                wl12xx_warning("wl12xx_op_set_rts_threshold failed: %d", ret);
 
+       mutex_unlock(&wl->mutex);
+
        return ret;
 }