linux-kernel - Re: wifi iwlagn fails to authenticate after wake from suspend

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Date:	Mon, 12 Dec 2011 06:48:42 -0800
From:	wwguy <wey-yi.w.guy@...el.com>
To:	Matías Aguirre <matiasaguirre@...il.com>
Cc:	Gene Smith <gds@...rtertn.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: wifi iwlagn fails to authenticate after wake from suspend

On Sun, 2011-12-11 at 22:36 -0800, Matías Aguirre wrote:
> Hi,
> 
> On Sat, Oct 29, 2011 at 2:32 AM, Gene Smith <gds@...rtertn.net> wrote:
> > David Rientjes wrote, On 10/26/2011 02:27 AM:
> >> So we need to bisect between 2.4.38 and 3.0.0? :)  I'm running ubuntu
> >> 11.10 on a home laptop so I'll give this a try as well when I can if I can
> >> put up with unity for that long.
> 
> I've bisected the problem and narrowed the bug to changeset 73b78a2272
> (http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=73b78a22720087d2d384bdd49e9c25500ba73edd).
> 
> Here's a patch, that applies against 3.2-rc5, that fixed the error for me:
> 
> diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c
> b/drivers/net/wireless/iwlwifi/iwl-agn.c
> index bacc06c..01d5d38 100644
> --- a/drivers/net/wireless/iwlwifi/iwl-agn.c
> +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
> @@ -1297,7 +1297,7 @@ int iwl_alive_start(struct iwl_priv *priv)
>                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
>                 if (ret)
>                         return ret;
> -       } else {
> +       } else if (priv->cfg->bt_params) {
>                 /*
>                  * default is 2-wire BT coexexistence support
>                  */
this is not right, you stop the bt coex for non-combo device.
maybe you system has issue with BT, we seen this happen on some cases.
try the following module parameter and see if help

$sudo modprobe iwlagn bt_coex_active=0

Thanks
Wey

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