This is a note to let you know that I've just added the patch titled
ath9k: set 40 Mhz rate only if hw is configured in ht40
to the 2.6.33-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.33.git;a=summary
The filename of the patch is:
ath9k-set-40-mhz-rate-only-if-hw-is-configured-in-ht40.patch
and it can be found in the queue-2.6.33 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.33 longterm
tree,
please let <[email protected]> know about it.
>From 41e2b05b9598d6bdf91fc20280bfc538d853f769 Mon Sep 17 00:00:00 2001
From: Rajkumar Manoharan <[email protected]>
Date: Fri, 20 May 2011 17:52:14 +0530
Subject: ath9k: set 40 Mhz rate only if hw is configured in ht40
From: Rajkumar Manoharan <[email protected]>
commit 41e2b05b9598d6bdf91fc20280bfc538d853f769 upstream.
Whenever there is a channel width change from 40 Mhz to 20 Mhz,
the hardware is reconfigured to ht20. Meantime before doing
the rate control updation, the packets are being transmitted are
selected rate with IEEE80211_TX_RC_40_MHZ_WIDTH.
While transmitting ht40 rate packets in ht20 mode is causing
baseband panic with AR9003 based chips.
==== BB update: BB status=0x02001109 ====
ath: ** BB state: wd=1 det=1 rdar=0 rOFDM=1 rCCK=1 tOFDM=0 tCCK=0 agc=2
src=0 **
ath: ** BB WD cntl: cntl1=0xffff0085 cntl2=0x00000004 **
ath: ** BB mode: BB_gen_controls=0x000033c0 **
ath: ** BB busy times: rx_clear=99%, rx_frame=0%, tx_frame=0% **
ath: ==== BB update: done ====
Signed-off-by: Rajkumar Manoharan <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/wireless/ath/ath9k/rc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -614,7 +614,8 @@ static void ath_rc_rate_set_series(const
if (WLAN_RC_PHY_HT(rate_table->info[rix].phy)) {
rate->flags |= IEEE80211_TX_RC_MCS;
- if (WLAN_RC_PHY_40(rate_table->info[rix].phy))
+ if (WLAN_RC_PHY_40(rate_table->info[rix].phy) &&
+ conf_is_ht40(&txrc->hw->conf))
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
if (WLAN_RC_PHY_SGI(rate_table->info[rix].phy))
rate->flags |= IEEE80211_TX_RC_SHORT_GI;
Patches currently in longterm-queue-2.6.33 which might be from
[email protected] are
/home/gregkh/linux/longterm/longterm-queue-2.6.33/queue-2.6.33/ath9k-set-40-mhz-rate-only-if-hw-is-configured-in-ht40.patch
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