linux-kernel - Re: [PATCH] pinctrl: msm: drop wake

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Message-ID: <20140307032635.GF21801@sonymobile.com>
Date:	Thu, 6 Mar 2014 19:26:49 -0800
From:	Bjorn Andersson <bjorn.andersson@...ymobile.com>
To:	Josh Cartwright <joshc@...eaurora.org>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] pinctrl: msm: drop wake_irqs bitmap

On Wed 05 Mar 11:33 PST 2014, Josh Cartwright wrote:

> Currently, the wake_irqs bitmap is used to track whether there are any
> gpio's which are configured as wake irqs, and uses this to determine
> whether or not to call enable_irq_wake()/disable_irq_wake() on the
> summary interrupt.
> 
> However, the genirq core already handles this case, by maintaining a
> 'wake_count' per irq_desc, and only calling into the controlling
> irq_chip when wake_count transitions 0 <-> 1.
> 
> Drop this bitmap, and unconditionally call irq_set_irq_wake() on the
> summary interrupt.

I wasn't aware of that, change looks good!

Acked-by: Bjorn Andersson <bjorn.andersson@...ymobile.com>

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