linux-kernel - Re: [PATCH] irq: Add new flag to ack level-triggered interrupts before unmasking

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Date:	Thu, 6 Feb 2014 22:14:40 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Carlo Caione <carlo@...one.org>
cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...glegroups.com, maxime.ripard@...e-electrons.com,
	hdegoede@...hat.com, emilio@...pez.com.ar
Subject: Re: [PATCH] irq: Add new flag to ack level-triggered interrupts
 before unmasking

On Thu, 6 Feb 2014, Carlo Caione wrote:

> Several irqchip drivers require the level-triggered interrupt to be
> acked before unmasking to avoid that a second interrupt is immediately
> triggered. This small patch introduces a new irqchip flags that is used
> to ack the IRQ line before it is unmasked.

And why are you not doing this in the unmask function of the affected
chip in the first place?
 
Thanks,

	tglx
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