iwlwifi: fix station mimo power save values

This patch fixes the wrong use MIMO power save values. Our TX was
configured with our MIMO power save values instead of peer's MIMO power
save values, this may affect connectivity. The peer STA/AP may not sense
our traffic at all as it doesn't have all RX chains opened.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 754fef5b592f656f20cca1e13b74b9361e2d01b9..90a2b6dee7c0e609063e945fefc9f6c13be936c9 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -1153,7 +1153,8 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv,
            !sta->ht_info.ht_supported)
                return -1;
 
-       if (priv->current_ht_config.tx_mimo_ps_mode == IWL_MIMO_PS_STATIC)
+       if (((sta->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS) >> 2)
+                                               == IWL_MIMO_PS_STATIC)
                return -1;
 
        /* Need both Tx chains/antennas to support MIMO */

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index a5feb0cc982cd9e7f28bb49d8f5c5cc934de1cf3..34928c8ed2020972249b790478d660019d92d1c5 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -586,8 +586,6 @@ static void iwl4965_ht_conf(struct iwl_priv *priv,
                iwl_conf->supported_chan_width = 0;
        }
 
-       iwl_conf->tx_mimo_ps_mode =
-               (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
        memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 
        iwl_conf->control_channel = ht_bss_conf->primary_channel;

diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index c19db438306cf9fc914b8b05bb278bf1fb417737..cdfb343c7ec6b3afc597de1204ae48421cf90fd3 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -412,7 +412,6 @@ struct iwl_ht_info {
        /* self configuration data */
        u8 is_ht;
        u8 supported_chan_width;
-       u16 tx_mimo_ps_mode;
        u8 is_green_field;
        u8 sgf;                 /* HT_SHORT_GI_* short guard interval */
        u8 max_amsdu_size;