ath10k: use configured nss instead of max nss

When re-associating a station, the nss was set back to
maximum value even if user had configured small number
of tx chains.  So, pay attention to user's config in
this case as well.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 7df2379..21931e1 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -4147,6 +4147,10 @@ ath10k_default_bitrate_mask(struct ath10k *ar,
        u32 legacy = 0x00ff;
        u8 ht = 0xff, i;
        u16 vht = 0x3ff;
+       u16 nrf = ar->num_rf_chains;
+
+       if (ar->cfg_tx_chainmask)
+               nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
 
        switch (band) {
        case IEEE80211_BAND_2GHZ:
@@ -4162,11 +4166,11 @@ ath10k_default_bitrate_mask(struct ath10k *ar,
        if (mask->control[band].legacy != legacy)
                return false;
 
-       for (i = 0; i < ar->num_rf_chains; i++)
+       for (i = 0; i < nrf; i++)
                if (mask->control[band].ht_mcs[i] != ht)
                        return false;
 
-       for (i = 0; i < ar->num_rf_chains; i++)
+       for (i = 0; i < nrf; i++)
                if (mask->control[band].vht_mcs[i] != vht)
                        return false;
 
@@ -4417,6 +4421,9 @@ static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw,
        u8 fixed_nss = ar->num_rf_chains;
        u8 force_sgi;
 
+       if (ar->cfg_tx_chainmask)
+               fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
+
        force_sgi = mask->control[band].gi;
        if (force_sgi == NL80211_TXRATE_FORCE_LGI)
                return -EINVAL;