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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@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
hifive-unleashed-5.1
Felix Fietkau 2013-04-27 11:47:01 +02:00 committed by John W. Linville
parent a8a48e60a4
commit 4ef69d0394
1 changed files with 5 additions and 1 deletions
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6
drivers/net/wireless/ath/ath9k/main.c
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@ -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,