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Date: Tue, 6 Mar 2012 10:52:19 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
cc: Stefan Lippers-Hollmann <s.L-H@gmx.de>,
	Sven Joachim <svenjoac@gmx.de>,
	Greg KH <gregkh@linuxfoundation.org>,
	LKML <linux-kernel@vger.kernel.org>, stable@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Jonathan Nieder <jrnieder@gmail.com>,
	linux-wireless@vger.kernel.org,
	Stefano Brivio <stefano.brivio@polimi.it>
Subject: Re: [ 57/72] genirq: Unmask oneshot irqs when thread was not woken
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References: <20120228010511.GA8453@kroah.com> <20120228010434.412979550@linuxfoundation.org> <87hay4dqjr.fsf@turtle.gmx.de> <201203050143.24541.s.L-H@gmx.de> <CA+55aFxZsVxkxifR+EUZi=RsUGKfs5vYXX3nN_M_Az1BY5yyaw@mail.gmail.com>
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On Tue, 6 Mar 2012, Thomas Gleixner wrote:

> On Mon, 5 Mar 2012, Linus Torvalds wrote:
> 
> > Thomas, should we just plan on reverting that commit from mainline? It
> > clearly causes regressions.
> 
> Give me a day or two to figure out why it breaks stuff. I have no idea
> why it should wreckage anything.

Hmm. This is interesting. The b43 driver has a primary handler which
can return IRQ_NONE. So up to that change the interrupt line was kept
disabled when that happened. Possibly the driver relies on that
behaviour. Digging for a machine with a b43.