linux-kernel - Re: 3.4-rc ath9k regression (Re: [ath9k-devel] 3.3.1 ath9k regression)

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Message-ID: <4F871AB8.3070302@openwrt.org>
Date:	Thu, 12 Apr 2012 20:11:04 +0200
From:	Felix Fietkau <nbd@...nwrt.org>
To:	Michael Leun <ml@...ktra.leun.net>
CC:	Felipe Contreras <felipe.contreras@...il.com>,
	Michael Leun <lkml20120218@...ton.leun.net>,
	Mohammed Shafi <shafi.wireless@...il.com>,
	Ben Greear <greearb@...delatech.com>,
	casteyde.christian@...e.fr,
	Kelly Anderson <kelly@...ka.with-linux.com>,
	"ath9k-devel@...ts.ath9k.org" <ath9k-devel@...ema.h4ckr.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-wireless Mailing List <linux-wireless@...r.kernel.org>,
	Sergio Correia <lists@...e.net>
Subject: Re: 3.4-rc ath9k regression (Re: [ath9k-devel] 3.3.1 ath9k regression)

On 2012-04-12 5:35 PM, Michael Leun wrote:
> On Thu, 12 Apr 2012 16:58:34 +0300
> Felipe Contreras <felipe.contreras@...il.com> wrote:
> 
>> On Thu, Apr 12, 2012 at 4:46 PM, Felix Fietkau <nbd@...nwrt.org>
>> wrote:
>> > On 2012-04-09 5:29 PM, Michael Leun wrote:
>> >> On Mon, 9 Apr 2012 19:52:45 +0530
>> 
>> >> Seems obvious to me, that this line
>> >>
>> >> if (sc->ps_idle && (sc->ps_flags & PS_WAIT_FOR_TX_ACK))
>> >>
>> >> makes the real difference.
>> > Please try this patch with plain 3.3.1 or 3.4-rc2 to see if it fixes
>> > this issue:
>> 
>> Nope, not here (3.3.1).
> 
> Also negative for 3.4-rc2, but that SLEEP<>AWAKE noise at the end
> stopped. Still need "iwconfig wlan0 essid <myssid>" to make it ping
> again (that not included in log below).
OK, so my fix is definitely worth submitting, since it gets rid of some
unnecessary sleep mode transitions. About the iwconfig command: are you
not using wpa_supplicant?

> Due to Felipes result and 3.4-rc2 didn't repeat my test with 3.3.1, if
> you think it would add useful information I could.
Maybe it would be useful to get some more detailed logs from that.

- Felix
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