From: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx>
Disable TX_STBC for both HT and VHT if the devices tx chainmask is '1'
TX_STBC is required only for devices with tx_chainmask > 1. This fixes
a ping failure for QCA9887 (1x1) in HT/VHT mode
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/mac.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 1fe33c36..5e40922 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -4224,6 +4224,9 @@ static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2);
}
+ if (ar->cfg_tx_chainmask <= 1)
+ vht_cap.cap &= ~IEEE80211_VHT_CAP_TXSTBC;
+
vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
@@ -4261,7 +4264,7 @@ static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
ht_cap.cap |= smps;
}
- if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
+ if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC && (ar->cfg_tx_chainmask > 1))
ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
--
1.9.1
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