From 2e1fea43aa170e18beb8378465e595e18cd08f6e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 10 Nov 2010 09:56:44 -0800 Subject: [PATCH] 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 Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn-rxon.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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 -- GitLab