Messages in this thread Patch in this message | | | Date | Wed, 15 Jun 2011 17:28:53 -0700 | From | Greg KH <> | Subject | [57/85] ath9k: set 40 Mhz rate only if hw is configured in ht40 |
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2.6.33-longterm review patch. If anyone has any objections, please let us know.
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From: Rajkumar Manoharan <rmanoharan@atheros.com>
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 <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- 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;
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