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[1/3] ath9k: Update rate control for 11NA HT40 mode

Message ID 1248860123-12079-1-git-send-email-vasanth@atheros.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Vasanthakumar Thiagarajan July 29, 2009, 9:35 a.m. UTC 
Now the lowest rate in 11na ht40 mode is 13.5Mbps this shortens the
range when compared to 11na ht20 mode where the lowest rate is 6.5Mbps.
To improve the range, make 6.5Mbps as the lowest rate in 11na ht40 mode,
this improves the range by approximately 2dB. 11ng ht40 does not have
this issue as it also has basic rates (1, 2, 5.5 and 11).

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
---
 drivers/net/wireless/ath/ath9k/rc.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index a07efa2..59ad47c 100644
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -44,7 +44,7 @@  static const struct ath_rate_table ar5416_11na_ratetable = {
 		{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
 			29300, 0x0c, 0x00, 108,
 			4,  7, 7, 7, 7, 0 },
-		{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
+		{ VALID_2040, VALID_2040, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
 			6400, 0x80, 0x00, 0,
 			0, 8, 24, 8, 24, 3216 },
 		{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
@@ -463,8 +463,6 @@  static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw)
 	if (!ignore_cw && WLAN_RC_PHY_HT(phy))
 		if (WLAN_RC_PHY_40(phy) && !(capflag & WLAN_RC_40_FLAG))
 			return 0;
-		if (!WLAN_RC_PHY_40(phy) && (capflag & WLAN_RC_40_FLAG))
-			return 0;
 	return 1;
 }