linux-kernel - RE: [PATCH v1 3/3] ARM: tegra: cpuidle driver for tegra

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Date:	Fri, 27 Jan 2012 08:39:28 +0000
From:	"Bedia, Vaibhav" <vaibhav.bedia@...com>
To:	Colin Cross <ccross@...roid.com>
CC:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Russell King <linux@....linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Olof Johansson <olof@...om.net>,
	Stephen Warren <swarren@...dia.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH v1 3/3] ARM: tegra: cpuidle driver for tegra

On Fri, Jan 27, 2012 at 12:40:58, Colin Cross wrote:
> local_irq_enable() is required by the cpuidle call semantics.  See
> arch/arm/process.c, it has a 				WARN_ON(irqs_disabled()) after the
> idle function call.  The local_irq_disable() can and probably should
> be dropped, although a comment that the function is called with
> interrupts off and is expected to return with interrupts on would be
> helpful.
> 

Ah... I was too fixated on local_irq_disable() and local_irq_enable() in cpu_idle().
Thanks for clarifying.
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