linux-kernel - Re: [PATCH] gpio/lynxpoint: check if the interrupt is enabled in IRQ handler

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Message-ID: <20131011110940.GO3521@intel.com>
Date:	Fri, 11 Oct 2013 14:09:40 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio/lynxpoint: check if the interrupt is enabled in IRQ
 handler

On Fri, Oct 11, 2013 at 12:57:37PM +0200, Linus Walleij wrote:
> On Tue, Oct 1, 2013 at 4:35 PM, Mika Westerberg
> <mika.westerberg@...ux.intel.com> wrote:
> 
> > Checking LP_INT_STAT is not enough in the interrupt handler because its
> > contents get updated regardless of whether the pin has interrupt enabled or
> > not. This causes the driver to loop forever for GPIOs that are pulled up.
> >
> > Fix this by checking the interrupt enable bit for the pin as well.
> >
> > Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> 
> Patch applied for fixes with Mathias ACK.

Thanks!

> Should this be tagged for -stable as well?

Yes, please. I think starting from 3.9 when this driver was merged.
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