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

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Date:	Thu, 4 Sep 2014 17:14:53 -0700
From:	Bjorn Andersson <bjorn@...o.se>
To:	Thomas Gleixner <tglx@...utronix.de>
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>
Subject: Re: [PATCH] genirq: Introduce irq_read_line()

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>

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