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ath9k_htc: Fix disconnect issue in HT40 mode. 

Some APs advertise that they may be HT40 capable in the capabilites
but the current operating channel configuration may be only HT20.
This causes disconnection as ath9k_htc sets WLAN_RC_40_FLAG despite
the AP operating in HT20 mode.
Hence set this flag only if the current channel configuration
is HT40 enabled.

Cc: stable@kernel.org
Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vivek Natarajan 2010-08-12 14:23:28 +05:30 committed by John W. Linville
parent da93f10684
commit 71ba186c12
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/ath/ath9k/htc_drv_main.c
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@ -366,7 +366,8 @@ static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
caps = WLAN_RC_HT_FLAG;
if (sta->ht_cap.mcs.rx_mask[1])
caps |= WLAN_RC_DS_FLAG;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
(conf_is_ht40(&priv->hw->conf)))
caps |= WLAN_RC_40_FLAG;
if (conf_is_ht40(&priv->hw->conf) &&
(sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))