linux-kernel - Re: [RFC][PATCH 2/2] PM: Rework handling of interrupts during suspend-resume

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Date:	Wed, 25 Feb 2009 20:20:35 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Arve Hjønnevåg <arve@...roid.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, "Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Len Brown <lenb@...nel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC][PATCH 2/2] PM: Rework handling of interrupts during  suspend-resume

Arve Hjønnevåg <arve@...roid.com> writes:

> We only have one gpio input driver, but I don't think is good to loose
> any wakeup interrupts. Any driver that needs an edge triggered wakeup
> interrupt will have problems if the hardware does not regenerate the
> interrupt when the host does not respond.

We are not loosing interrupts.  The normal implementation of disable
is a software disable and sets IRQ_PENDING to ensure we don't loose
interrupts when the interrupt is disabled.

Eric
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