linux-kernel - Re: brcm80211 hangs when disabling wireless

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Message-ID: <20101213194203.GB18431@kroah.com>
Date:	Mon, 13 Dec 2010 11:42:03 -0800
From:	Greg KH <greg@...ah.com>
To:	Henry Ptasinski <henryp@...adcom.com>
Cc:	Dave Hansen <dave@...1.net>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	Jason Cooper <jason@...edaemon.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Greg KH <gregkh@...e.de>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"John W. Linville" <linville@...driver.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mike Rapoport <mike.rapoport@...il.com>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Johannes Berg <johannes@...solutions.net>
Subject: Re: brcm80211 hangs when disabling wireless

On Mon, Dec 13, 2010 at 11:31:11AM -0800, Henry Ptasinski wrote:
> On Thu, Dec 09, 2010 at 01:54:38PM -0800, Dave Hansen wrote:
> > On Thu, 2010-12-09 at 13:43 -0800, Greg KH wrote:
> > > On Thu, Dec 09, 2010 at 01:26:50PM -0800, Dave Hansen wrote:
> > > > I've been getting hard hangs when I toggle the wireless on a Lenovo
> > > > S10-3.  It happens both with the physical switch and the Fn-F5 key
> > > > combo.  It's quite repeatable.  The system is quite stable when I'm not
> > > > trying to disable the wireless, though.
> > > 
> > > What kernel version is this?
> > > 
> > > Linus's latest tree has a known bug when the wireless is suspended and
> > > then resumed.  Broadcom is working on it but no patch is forthcoming
> > > yet.  Perhaps this is the same issue.
> > 
> > Yeah, it's 2.6.37-rc5 plus a pull from:
> > 
> > 	http://kernel.ubuntu.com/git?p=ikepanhc/ideapad-laptop.git;a=summary
> > 
> > That could easily be it.  Thanks, Greg.
> 
> Actually, I think it's the rfkill support (or lack thereof) that's causing you
> trouble.  But we're looking at that as well.
> 
> The outstanding reported issues that I'm aware of are:
> 	- 43224 crashes
> 	- missing rfkill support
> 	- suspend/resume problems
> 	- 4313 infinite loop in some cases
> 
> In terms of process, should these all get filed in bugzilla.kernel.org (or
> somewhere else), or just track them via email and our TODO list?

Where ever you feel comfortable putting them, some like email, some like
bugzilla.kernel.org.  The TODO list might be a bit tougher as it doesn't
always propagate to Linus fast enough (look at the differences between
it already in Linus's tree and linux-next, right?)

thanks,

greg k-h
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