X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fnet%2Fwireless%2Fath%2Fath9k%2Fmain.c;h=ace9f066fa20e13a89bc655bb0ca5f5627ef740a;hb=203043f579ece44bb30291442cd56332651dd37d;hp=c79c97be6cd4417afd8a2cf2ff0776c11856f17b;hpb=c9234a662e38309d6fe272ad80e6cdb8d24654f0;p=mv-sheeva.git

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index c79c97be6cd..ace9f066fa2 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1309,6 +1309,9 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 
 	spin_lock_bh(&sc->sc_pcu_lock);
 
+	/* prevent tasklets to enable interrupts once we disable them */
+	ah->imask &= ~ATH9K_INT_GLOBAL;
+
 	/* make sure h/w will not generate any interrupt
 	 * before setting the invalid flag. */
 	ath9k_hw_disable_interrupts(ah);
@@ -1326,6 +1329,12 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 
 	spin_unlock_bh(&sc->sc_pcu_lock);
 
+	/* we can now sync irq and kill any running tasklets, since we already
+	 * disabled interrupts and not holding a spin lock */
+	synchronize_irq(sc->irq);
+	tasklet_kill(&sc->intr_tq);
+	tasklet_kill(&sc->bcon_tasklet);
+
 	ath9k_ps_restore(sc);
 
 	sc->ps_idle = true;