From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Fri, 17 Oct 2014 07:40:14 +0530
Subject: [PATCH] ath9k: Clear NoA schedule properly

When an active context transitions to inactive
state, the NoA schedule needs to be removed
for the context that has beaconing enabled.
Not doing this will affect p2p clients.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
---

--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -356,6 +356,21 @@ void ath_chanctx_event(struct ath_softc 
 				"Move chanctx state from WAIT_FOR_TIMER to WAIT_FOR_BEACON\n");
 		}
 
+		/*
+		 * When a context becomes inactive, for example,
+		 * disassociation of a station context, the NoA
+		 * attribute needs to be removed from subsequent
+		 * beacons.
+		 */
+		if (!ctx->active && avp->noa_duration &&
+		    sc->sched.state != ATH_CHANCTX_STATE_WAIT_FOR_BEACON) {
+			avp->noa_duration = 0;
+			avp->periodic_noa = false;
+
+			ath_dbg(common, CHAN_CTX,
+				"Clearing NoA schedule\n");
+		}
+
 		if (sc->sched.state != ATH_CHANCTX_STATE_WAIT_FOR_BEACON)
 			break;