From a13ac9df0a2125507295da02444cd88bebf0df36 Mon Sep 17 00:00:00 2001 From: Helmut Schaa Date: Sat, 2 Oct 2010 11:28:02 +0200 Subject: [PATCH] rt2x00: Fix SM PS check Fix a check for dynamic SM PS mode in the STAs HT caps. Since a value of 3 means "SM PS disabled" the previous check assumed in that case that "dynamic SM PS" was enabled and as such prefixed every MCS>7 frame with a unnecessary RTS/CTS exchange. Also, the bit shift was done in the wrong direction. Signed-off-by: Helmut Schaa Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00ht.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2x00ht.c b/drivers/net/wireless/rt2x00/rt2x00ht.c index ad3c7ff..48b6ed4 100644 --- a/drivers/net/wireless/rt2x00/rt2x00ht.c +++ b/drivers/net/wireless/rt2x00/rt2x00ht.c @@ -60,9 +60,10 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, * 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))) + ((tx_info->control.sta->ht_cap.cap & + IEEE80211_HT_CAP_SM_PS) >> + IEEE80211_HT_CAP_SM_PS_SHIFT) == + WLAN_HT_CAP_SM_PS_DYNAMIC) __set_bit(ENTRY_TXD_HT_MIMO_PS, &txdesc->flags); } else { txdesc->mcs = rt2x00_get_rate_mcs(hwrate->mcs); -- 2.7.4