Subject: Re: [BUG] scans can still hang with -EBUSY on iwl3945
From: Maxim Levitsky <maximlevitsky@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: reinette chatre <reinette.chatre@intel.com>,
	iwlwifi maling list <ipw3945-devel@lists.sourceforge.net>,
	linux-wireless <linux-wireless@vger.kernel.org>
In-Reply-To: <1242170403.14227.18.camel@johannes.local>
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Content-Type: text/plain
Date: Wed, 13 May 2009 03:50:33 +0300
Message-Id: <1242175833.5154.2.camel@maxim-laptop>
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Sender: linux-wireless-owner@vger.kernel.org

On Wed, 2009-05-13 at 01:20 +0200, Johannes Berg wrote:
> On Wed, 2009-05-13 at 02:14 +0300, Maxim Levitsky wrote:
> 
> > > So it's a bug in iwlwifi, it neither rejects nor executes a scan when in
> > > rfkill.
> > But I use disable_hw_scan=1 !
> 
> Load the driver with debug=1 and see what it shows then. I don't think
> there's a way for mac80211 to get stuck.
> 
> Also you could stick some printks into
> net/mac80211/scan.c:ieee80211_scan_work() at strategic places and see...
> but if they never happen you haven't turned off hw scan.
You know, you are right, it turns out that hw scan was active (due to
all the experimentation, I forgot to turn it off...) and it is obvious
that iwlwifi has rfkill related bugs there, I handle that later.

But without hw scan, something is still there, I sooneer or later will
understand.

Best regards, and sorry
	Maxim Levitsky