linux-kernel - Re: iwlagn is getting very shaky

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Date:	Tue, 8 Nov 2011 10:24:18 +0200
From:	Emmanuel Grumbach <egrumbach@...il.com>
To:	Norbert Preining <preining@...ic.at>
Cc:	"Guy, Wey-Yi" <wey-yi.w.guy@...el.com>,
	David Rientjes <rientjes@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ipw3945-devel@...ts.sourceforge.net" 
	<ipw3945-devel@...ts.sourceforge.net>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: iwlagn is getting very shaky

On Tue, Nov 8, 2011 at 10:07, Emmanuel Grumbach <egrumbach@...il.com> wrote:
>>
>> In short, this is the output of your patch:
>> [  215.872090] iwlwifi 0000:06:00.0: Queue 11 stuck for 10000 ms.
>> [  215.872101] iwlwifi 0000:06:00.0: Current SW read_ptr 105 write_ptr 115
>> [  215.872156] iwlwifi 0000:06:00.0: Current HW read_ptr 105 write_ptr 115
>> [  215.872164] iwlwifi 0000:06:00.0: On demand firmware reload
>>
>>
> Ok thanks for that. The HW and the SW agree then...
>
> I would like to see what happens in terms or power.
> Please set the power debug flag: modprobe iwlwifi debug=0x100
>
> Thanks.
>

It may be worth to disable Link Power save too. I would be glad if you
could try this patch (attached and inlined), with the power debug flag
set.


diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c
b/drivers/net/wireless/iwlwifi/iwl-power.c
index 4eaab20..e5f309b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.c
+++ b/drivers/net/wireless/iwlwifi/iwl-power.c
@@ -436,7 +436,7 @@ int iwl_power_update_mode(struct iwl_priv *priv, bool force)
 /* initialize to default */
 void iwl_power_initialize(struct iwl_priv *priv)
 {
-	priv->power_data.bus_pm = bus_get_pm_support(bus(priv));
+	priv->power_data.bus_pm = false;

 	priv->power_data.debug_sleep_level_override = -1;



Thanks for your patience !
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