From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 27 Dec 2016 12:15:14 +0100
Subject: [PATCH] ath5k: drop bogus warning on drv_set_key with unsupported
 cipher

Simply return -EOPNOTSUPP instead.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

--- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
+++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
@@ -502,8 +502,7 @@ ath5k_set_key(struct ieee80211_hw *hw, e
 			break;
 		return -EOPNOTSUPP;
 	default:
-		WARN_ON(1);
-		return -EINVAL;
+		return -EOPNOTSUPP;
 	}
 
 	mutex_lock(&ah->lock);