rt2x00: Set MIMO PS flag in tx descriptor for STAs in dynamic SMPS mode
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00ht.c b/drivers/net/wireless/rt2x00/rt2x00ht.c
index c004cd3..ad3c7ff 100644
--- a/drivers/net/wireless/rt2x00/rt2x00ht.c
+++ b/drivers/net/wireless/rt2x00/rt2x00ht.c
@@ -54,6 +54,16 @@
*/
if (txrate->flags & IEEE80211_TX_RC_MCS) {
txdesc->mcs = txrate->idx;
+
+ /*
+ * MIMO PS should be set to 1 for STA's using dynamic SM PS
+ * when using more then one tx stream (>MCS7).
+ */
+ if (tx_info->control.sta && txdesc->mcs > 7 &&
+ (tx_info->control.sta->ht_cap.cap &
+ (WLAN_HT_CAP_SM_PS_DYNAMIC <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT)))
+ __set_bit(ENTRY_TXD_HT_MIMO_PS, &txdesc->flags);
} else {
txdesc->mcs = rt2x00_get_rate_mcs(hwrate->mcs);
if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)