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generated by cgit v1.2.3 (git 2.25.1) at 2025-01-19 11:20:51 +0000
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From e5d00646a207c4e9da254283eee2d278de338394 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Fri, 2 Jan 2009 16:17:25 +0100
Subject: [RFC 12/12] ath9k: fix null pointer dereference in ani monitor code

In 'ath9k_ani_reset' the 'ahp->ah_curani' will be initialized only
if 'DO_ANI(ah)' true. In 'ath9k_hw_ani_monitor' we are using 'ahp->ah_curani'
unconditionally, and it will cause a NULL pointer dereference on AR9100.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
---
 drivers/net/wireless/ath9k/ani.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/ath9k/ani.c
+++ b/drivers/net/wireless/ath9k/ani.c
@@ -555,6 +555,9 @@ void ath9k_hw_ani_monitor(struct ath_hal
 	struct ar5416AniState *aniState;
 	int32_t listenTime;
 
+	if (!DO_ANI(ah))
+		return;
+
 	aniState = ahp->ah_curani;
 	ahp->ah_stats.ast_nodestats = *stats;
 
@@ -614,9 +617,6 @@ void ath9k_hw_ani_monitor(struct ath_hal
 		aniState->cckPhyErrCount = cckPhyErrCnt;
 	}
 
-	if (!DO_ANI(ah))
-		return;
-
 	if (aniState->listenTime > 5 * ahp->ah_aniPeriod) {
 		if (aniState->ofdmPhyErrCount <= aniState->listenTime *
 		    aniState->ofdmTrigLow / 1000 &&