commit: 4ef69d0394cba8caa9f75d3f2e53429bfb8b3045
From: Felix Fietkau <nbd@xxxxxxxxxxx>
Date: Sat, 27 Apr 2013 11:47:01 +0200
Subject: ath9k: fix key allocation error handling for powersave keys
If no keycache slots are available, ath_key_config can return -ENOSPC.
If the key index is not checked for errors, it can lead to logspam that
looks like this: "ath: wiphy0: keyreset: keycache entry 228 out of range"
This can cause follow-up errors if the invalid keycache index gets
used for tx.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/main.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 6963862..c4fc3d1 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1332,6 +1332,7 @@ static int ath9k_sta_add(struct ieee80211_hw *hw,
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_node *an = (struct ath_node *) sta->drv_priv;
struct ieee80211_key_conf ps_key = { };
+ int key;
ath_node_attach(sc, sta, vif);
@@ -1339,7 +1340,9 @@ static int ath9k_sta_add(struct ieee80211_hw *hw,
vif->type != NL80211_IFTYPE_AP_VLAN)
return 0;
- an->ps_key = ath_key_config(common, vif, sta, &ps_key);
+ key = ath_key_config(common, vif, sta, &ps_key);
+ if (key > 0)
+ an->ps_key = key;
return 0;
}
@@ -1356,6 +1359,7 @@ static void ath9k_del_ps_key(struct ath_softc *sc,
return;
ath_key_delete(common, &ps_key);
+ an->ps_key = 0;
}
static int ath9k_sta_remove(struct ieee80211_hw *hw,
--
1.7.10.4
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