netdev - Re: [GIT] Networking

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Date:	Fri, 04 Nov 2011 18:03:42 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	David Miller <davem@...emloft.net>,
	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>,
	"Guy, Wey-Yi W" <wey-yi.w.guy@...el.com>,
	"John W. Linville" <linville@...driver.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stanislaw Gruszka <sgruszka@...hat.com>
Subject: Re: [GIT] Networking

On Tue, 2011-10-25 at 12:26 +0000, Linus Torvalds wrote:
> On Tue, Oct 25, 2011 at 12:32 PM, David Miller <davem@...emloft.net> wrote:
> >
> > The most visible thing in here is the reorganization of the drivers
> > under drivers/net.
> 
> Nope, the most visible thing are some new annoying warnings, that seem
> absolutely broken.
> 
> At the very minimum, that WARN_ON(1) should be a WARN_ON_ONCE() or
> something like that. Because showing it over an dover again is not
> helpful.
> 
> Added the people who signed off on the changes to the affected files,
> since they hopefully know why this happens and can fix it..

Sorry for the late reply.

I think this was actually caused by some changes from Ben Greear
"optimising" stuff in net/mac80211/work.c and keeping the wrong channel,
Stanislaw was also looking at this at some point I think. I agree that
it would be good to change to WARN_ON_ONCE(), will do that.

The warning itself has been around forever, but the fact that it
triggers now is probably related to the channel work & band switches.

johannes

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