ath9k: Make sure we have current channel in ah_curchan before rf disable/enable

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 89bf07e..6516a42 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1123,6 +1123,9 @@ void ath_radio_enable(struct ath_softc *sc)
        ath9k_ps_wakeup(sc);
        ath9k_hw_configpcipowersave(ah, 0);
 
+       if (!ah->curchan)
+               ah->curchan = ath_get_curchannel(sc, sc->hw);
+
        spin_lock_bh(&sc->sc_resetlock);
        r = ath9k_hw_reset(ah, ah->curchan, false);
        if (r) {
@@ -1175,6 +1178,9 @@ void ath_radio_disable(struct ath_softc *sc)
        ath_stoprecv(sc);               /* turn off frame recv */
        ath_flushrecv(sc);              /* flush recv queue */
 
+       if (!ah->curchan)
+               ah->curchan = ath_get_curchannel(sc, sc->hw);
+
        spin_lock_bh(&sc->sc_resetlock);
        r = ath9k_hw_reset(ah, ah->curchan, false);
        if (r) {