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ath9k: Determine number of streams from HT capabilities

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The number of streams supported by a STA can be determined
directly from the HT capabilities. Remove the redundant
variable storing the stream cap.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2009-03-30 15:28:56 +05:30 committed by John W. Linville
parent 063d8be37d
commit c6483cfe71
2 changed files with 8 additions and 12 deletions
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18
drivers/net/wireless/ath9k/rc.c
View file

@ -524,7 +524,7 @@ static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv,
u32 valid;
for (i = 0; i < rate_table->rate_cnt; i++) {
valid = (ath_rc_priv->single_stream ?
valid = (!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ?
rate_table->info[i].valid_single_stream :
rate_table->info[i].valid);
if (valid == 1) {
@ -557,9 +557,9 @@ static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv,
for (i = 0; i < rateset->rs_nrates; i++) {
for (j = 0; j < rate_table->rate_cnt; j++) {
u32 phy = rate_table->info[j].phy;
u32 valid = (ath_rc_priv->single_stream ?
rate_table->info[j].valid_single_stream :
rate_table->info[j].valid);
u32 valid = (!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ?
rate_table->info[j].valid_single_stream :
rate_table->info[j].valid);
u8 rate = rateset->rs_rates[i];
u8 dot11rate = rate_table->info[j].dot11rate;
@ -603,7 +603,7 @@ static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv,
for (i = 0; i < rateset->rs_nrates; i++) {
for (j = 0; j < rate_table->rate_cnt; j++) {
u32 phy = rate_table->info[j].phy;
u32 valid = (ath_rc_priv->single_stream ?
u32 valid = (!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ?
rate_table->info[j].valid_single_stream :
rate_table->info[j].valid);
u8 rate = rateset->rs_rates[i];
@ -740,9 +740,10 @@ static u8 ath_rc_ratefind_ht(struct ath_softc *sc,
if (rate > (ath_rc_priv->rate_table_size - 1))
rate = ath_rc_priv->rate_table_size - 1;
ASSERT((rate_table->info[rate].valid && !ath_rc_priv->single_stream) ||
ASSERT((rate_table->info[rate].valid &&
(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG)) ||
(rate_table->info[rate].valid_single_stream &&
ath_rc_priv->single_stream));
!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG)));
return rate;
}
@ -1422,9 +1423,6 @@ static void ath_rc_init(struct ath_softc *sc,
}
ath_rc_priv->rc_phy_mode = ath_rc_priv->ht_cap & WLAN_RC_40_FLAG;
/* Set stream capability */
ath_rc_priv->single_stream = (ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ? 0 : 1;
if (!rateset->rs_nrates) {
/* No working rate, just initialize valid rates */
hi = ath_rc_init_validrates(ath_rc_priv, rate_table,

2
drivers/net/wireless/ath9k/rc.h
View file

@ -157,7 +157,6 @@ struct ath_rateset {
* @probe_interval: interval for ratectrl to probe for other rates
* @prev_data_rix: rate idx of last data frame
* @ht_cap: HT capabilities
* @single_stream: When TRUE, only single TX stream possible
* @neg_rates: Negotatied rates
* @neg_ht_rates: Negotiated HT rates
*/
@ -175,7 +174,6 @@ struct ath_rate_priv {
u8 max_valid_rate;
u8 valid_rate_index[RATE_TABLE_SIZE];
u8 ht_cap;
u8 single_stream;
u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX];
u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][RATE_TABLE_SIZE];
u8 rc_phy_mode;