[ath9k-devel] Unable to associate using wireless-testing on ar9220

[Felix Fietkau <nbd@openwrt.org>]

On 2010-01-21 2:31 PM, Carl F?rstenberg wrote:
> We are trying to setup an AP using ar9220 on wireless-testing 
> (2.6.33-rc4-wl-47251-g281bca7) and fails with below error during 
> association:
> 
> Jan 21 14:24:36 wlan hostapd: wlan0: STA 00:04:20:1e:1f:75 IEEE 802.11: 
> did not acknowledge authentication response
> 
> This is a repeatable occurrence testing multiple wlan cards as client. 
> Would be happy for some help in debugging this issue.
Could you please test this patch and see if it resolves your issue?

--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1229,6 +1229,11 @@ void ath9k_hw_init_global_settings(struc
 	/* As defined by IEEE 802.11-2007 17.3.8.6 */
 	slottime = ah->slottime + 3 * ah->coverage_class;
 	acktimeout = slottime + sifstime;
+
+	/* Workaround for a hw issue */
+	if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
+		acktimeout = max(64, acktimeout);
+
 	ath9k_hw_setslottime(ah, slottime);
 	ath9k_hw_set_ack_timeout(ah, acktimeout);
 	ath9k_hw_set_cts_timeout(ah, acktimeout);