diff options
| author | Senthil Balasubramanian <senthilkumar@atheros.com> | 2009-06-24 18:56:42 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-10 15:02:24 -0400 |
| commit | 140add21356528fc76ad276fd32b2e7abb945325 (patch) | |
| tree | d056ec608bcf0b54a224114186f139cff27d1cad /drivers | |
| parent | e5f0921a9593365b506f69daa3cfd19c0ed1340b (diff) | |
| download | linux-140add21356528fc76ad276fd32b2e7abb945325.tar.bz2 | |
ath9k: Handle different TX and RX streams properly.
This patch fixes an issue when the TX and RX streams are different.
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 52dfa43bc529..961b0ce6ef3e 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -889,6 +889,7 @@ static void setup_ht_cap(struct ath_softc *sc, { #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */ #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */ + u8 tx_streams, rx_streams; ht_info->ht_supported = true; ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | @@ -901,21 +902,22 @@ static void setup_ht_cap(struct ath_softc *sc, /* set up supported mcs set */ memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); + tx_streams = !(sc->tx_chainmask & (sc->tx_chainmask - 1)) ? 1 : 2; + rx_streams = !(sc->rx_chainmask & (sc->rx_chainmask - 1)) ? 1 : 2; - switch(sc->rx_chainmask) { - case 1: - ht_info->mcs.rx_mask[0] = 0xff; - break; - case 3: - case 5: - case 7: - default: - ht_info->mcs.rx_mask[0] = 0xff; - ht_info->mcs.rx_mask[1] = 0xff; - break; + if (tx_streams != rx_streams) { + DPRINTF(sc, ATH_DBG_CONFIG, "TX streams %d, RX streams: %d\n", + tx_streams, rx_streams); + ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; + ht_info->mcs.tx_params |= ((tx_streams - 1) << + IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); } - ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; + ht_info->mcs.rx_mask[0] = 0xff; + if (rx_streams >= 2) + ht_info->mcs.rx_mask[1] = 0xff; + + ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; } static void ath9k_bss_assoc_info(struct ath_softc *sc, |