From 97fbc72db8eef672777ff656c7f5489e5338c447 Mon Sep 17 00:00:00 2001
From: "Luis R. Rodriguez" <lrodriguez@atheros.com>
Date: Mon, 9 Nov 2009 16:03:22 -0500
Subject: [PATCH] --- yaml --- r: 171731 b: refs/heads/master c:
 e5d6eb8305a4c116fc94ce28b8136c538c92442f h: refs/heads/master i:   171729:
 eeb3bc00f4a6b09fda3bdfdd76c949588c813b24   171727:
 b94c2913eb686f6341bb452c002fc2b5c29f920e v: v3

---
 [refs]                  |  2 +-
 trunk/net/mac80211/rx.c | 18 +++++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index da39ab3b1874..ecd20294f0e5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b34e620faa843d746400e324580e9a9efd457e4d
+refs/heads/master: e5d6eb8305a4c116fc94ce28b8136c538c92442f
diff --git a/trunk/net/mac80211/rx.c b/trunk/net/mac80211/rx.c
index 76478362a538..006cf89df70b 100644
--- a/trunk/net/mac80211/rx.c
+++ b/trunk/net/mac80211/rx.c
@@ -2441,9 +2441,21 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
 		goto drop;
 
 	if (status->flag & RX_FLAG_HT) {
-		/* rate_idx is MCS index */
-		if (WARN_ON(status->rate_idx < 0 ||
-			    status->rate_idx >= 76))
+		/*
+		 * rate_idx is MCS index, which can be [0-76] as documented on:
+		 *
+		 * http://wireless.kernel.org/en/developers/Documentation/ieee80211/802.11n
+		 *
+		 * Anything else would be some sort of driver or hardware error.
+		 * The driver should catch hardware errors.
+		 */
+		if (WARN((status->rate_idx < 0 ||
+			 status->rate_idx > 76),
+			 "Rate marked as an HT rate but passed "
+			 "status->rate_idx is not "
+			 "an MCS index [0-76]: %d (0x%02x)\n",
+			 status->rate_idx,
+			 status->rate_idx))
 			goto drop;
 		/* HT rates are not in the table - use the highest legacy rate
 		 * for now since other parts of mac80211 may not yet be fully