[PATCH wireless-next v2 4/7] wifi: rt2800: don't report an A-MPDU length to minstrel_ht

[Ho Jie Feng <hjf3108@gmail.com>]

Set IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN, which was added for drivers
that can't report the proper AMPDU length and record this workaround
below the TODO comment.

Signed-off-by: Ho Jie Feng <hjf3108@gmail.com>
---
 drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 1 +
 drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 5e1ee016624c6..1301bc24d9413 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -11860,6 +11860,7 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	ieee80211_hw_set(rt2x00dev->hw, PS_NULLFUNC_STACK);
 	ieee80211_hw_set(rt2x00dev->hw, SIGNAL_DBM);
 	ieee80211_hw_set(rt2x00dev->hw, SUPPORTS_PS);
+	ieee80211_hw_set(rt2x00dev->hw, TX_STATUS_NO_AMPDU_LEN);
 
 	/*
 	 * Don't set IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING for USB devices
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
index db33c1215de97..350e6bf24f7aa 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
@@ -374,6 +374,8 @@ static void rt2x00lib_fill_tx_status(struct rt2x00_dev *rt2x00dev,
 	 * by the hw we could provide the real ampdu_len to mac80211
 	 * which would allow the rc algorithm to better decide on
 	 * which rates are suitable.
+	 *
+	 * Currently, we work around this by setting TX_STATUS_NO_AMPDU_LEN.
 	 */
 	if (test_bit(TXDONE_AMPDU, &txdesc->flags) ||
 	    tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
-- 
2.53.0