From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 10 Nov 2010 17:56:44 +0000 (-0800)
Subject: iwlagn: fix needed chains calculation
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2e1fea43aa170e18beb8378465e595e18cd08f6e;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

iwlagn: fix needed chains calculation

Garen noticed that this was wrong. Fix
the calibration -- default to multiple
chains and fall back to single where
possible.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
index 02288779a71f..1fab1bb5f2b4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
@@ -458,11 +458,13 @@ static void iwlagn_check_needed_chains(struct iwl_priv *priv,
 					>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
 			maxstreams += 1;
 
+			need_multiple = true;
+
 			if ((ht_cap->mcs.rx_mask[1] == 0) &&
 			    (ht_cap->mcs.rx_mask[2] == 0))
 				need_multiple = false;
 			if (maxstreams <= 1)
-				need_multiple = true;
+				need_multiple = false;
 		} else {
 			/*
 			 * If at all, this can only happen through a race