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rt2800: correctly report MCS TX parameters 

We should only set IEEE80211_HT_MCS_TX_RX_DIF when TX and RX MCS sets
are not equal, i.e. when number of tx streams is different than
number of RX streams.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Stanislaw Gruszka 2016-11-18 10:43:53 +01:00 committed by Kalle Valo
parent f25ba69c63
commit cea5b03d8a
1 changed files with 13 additions and 10 deletions
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23
drivers/net/wireless/ralink/rt2x00/rt2800lib.c
View File

@ -7461,7 +7461,7 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
char *default_power1;
char *default_power2;
char *default_power3;
unsigned int i;
unsigned int i, tx_chains, rx_chains;
u32 reg;
/*
@ -7586,21 +7586,24 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40;
if (rt2x00dev->default_ant.tx_chain_num >= 2)
tx_chains = rt2x00dev->default_ant.tx_chain_num;
rx_chains = rt2x00dev->default_ant.rx_chain_num;
if (tx_chains >= 2)
spec->ht.cap |= IEEE80211_HT_CAP_TX_STBC;
spec->ht.cap |= rt2x00dev->default_ant.rx_chain_num <<
IEEE80211_HT_CAP_RX_STBC_SHIFT;
spec->ht.cap |= rx_chains << IEEE80211_HT_CAP_RX_STBC_SHIFT;
spec->ht.ampdu_factor = 3;
spec->ht.ampdu_density = 4;
spec->ht.mcs.tx_params =
IEEE80211_HT_MCS_TX_DEFINED |
IEEE80211_HT_MCS_TX_RX_DIFF |
((rt2x00dev->default_ant.tx_chain_num - 1) <<
IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
spec->ht.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
if (tx_chains != rx_chains) {
spec->ht.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
spec->ht.mcs.tx_params |=
(tx_chains - 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
}
switch (rt2x00dev->default_ant.rx_chain_num) {
switch (rx_chains) {
case 3:
spec->ht.mcs.rx_mask[2] = 0xff;
case 2: