linux-kernel - Re: [PATCH] genirq: Introduce irq_read

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Date:	Tue, 21 Oct 2014 11:22:40 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Bjorn Andersson <bjorn@...o.se>
cc:	Linus Walleij <linus.walleij@...aro.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Abhijeet Dharmapurikar <adharmap@...eaurora.org>,
	Marc Zyngier <marc.zyngier@....com>
Subject: Re: [PATCH] genirq: Introduce irq_read_line()

On Thu, 4 Sep 2014, Bjorn Andersson wrote:

> On Tue, Aug 19, 2014 at 1:23 PM, Bjorn Andersson
> <bjorn.andersson@...ymobile.com> wrote:
> > Introduce the irq_read_line() function to allow device drivers to read
> > the current logical state of an input when the hardware only exposes
> > this through status bits in the interrupt controller.
> >
> > The new function is backed by a new callback function in the irq_chip -
> > irq_read_line() - that can be implemented by irq_chips that owns such
> > status bits.
> >
> > Based on rfc patch from April 2011 by Abhijeet.
> >
> > Cc: Abhijeet Dharmapurikar <adharmap@...eaurora.org>
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...ymobile.com>
> 
> ping?

Sorry, slipped through the cracks. I was talking about this to Marc
last week and he needs it for yet another reason. He had some thoughts
about the state representation, so I wait for him to comment.

Thanks,

	tglx

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