linux-kernel - [118/244] rtlwifi: rtl8192su: Fix problem connecting to HT-enabled AP

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Date:	Wed, 28 Sep 2011 15:01:22 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	George <george0505@...ltek.com>,
	Larry Finger <Larry.Finger@...inger.net>,
	"John W. Linville" <linville@...driver.com>
Subject: [118/244] rtlwifi: rtl8192su: Fix problem connecting to HT-enabled AP

3.0-stable review patch.  If anyone has any objections, please let us know.

------------------

From: George <george0505@...ltek.com>

commit 3401dc6eba788ebc7c14ce51018d775b1c263399 upstream.

The driver fails to connect to 802.11n-enabled APs. The patch fixes
Bug #42262.

Signed-off-by: George <george0505@...ltek.com>
Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/wireless/rtlwifi/rtl8192cu/trx.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

--- a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
@@ -549,15 +549,16 @@ void rtl92cu_tx_fill_desc(struct ieee802
 			       (tcb_desc->rts_use_shortpreamble ? 1 : 0)
 			       : (tcb_desc->rts_use_shortgi ? 1 : 0)));
 	if (mac->bw_40) {
-		if (tcb_desc->packet_bw) {
+		if (rate_flag & IEEE80211_TX_RC_DUP_DATA) {
 			SET_TX_DESC_DATA_BW(txdesc, 1);
 			SET_TX_DESC_DATA_SC(txdesc, 3);
+		} else if(rate_flag & IEEE80211_TX_RC_40_MHZ_WIDTH){
+			SET_TX_DESC_DATA_BW(txdesc, 1);
+			SET_TX_DESC_DATA_SC(txdesc, mac->cur_40_prime_sc);
 		} else {
 			SET_TX_DESC_DATA_BW(txdesc, 0);
-				if (rate_flag & IEEE80211_TX_RC_DUP_DATA)
-					SET_TX_DESC_DATA_SC(txdesc,
-							  mac->cur_40_prime_sc);
-			}
+			SET_TX_DESC_DATA_SC(txdesc, 0);
+		}
 	} else {
 		SET_TX_DESC_DATA_BW(txdesc, 0);
 		SET_TX_DESC_DATA_SC(txdesc, 0);


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