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From: Kevin Hilman <khilman@kernel.org>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Krzysztof Kozlowski <k.kozlowski@samsung.com>,
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        Marek Szyprowski <m.szyprowski@samsung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH v8 3/5] amba: Don't unprepare the clocks if device driver wants IRQ safe runtime PM
References: <1413795888-18559-1-git-send-email-k.kozlowski@samsung.com>
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	<20141101005514.GY27405@n2100.arm.linux.org.uk>
	<20141101010113.GA3831@n2100.arm.linux.org.uk>
Date: Mon, 03 Nov 2014 09:17:08 -0800
In-Reply-To: <20141101010113.GA3831@n2100.arm.linux.org.uk> (Russell King's
	message of "Sat, 1 Nov 2014 01:01:13 +0000")
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Russell King - ARM Linux <linux@arm.linux.org.uk> writes:

[...]

> Would another possible solution be to remember the irq-safeness in the
> suspend handler, and use that in the resume handler?  Resume should
> /always/ undo what the suspend handler previously did wrt clk API stuff.

This seems more reasonable to me.

Currently, the setting of irq_safe-ness is permanent (there's no exposed
API to unset it after you set it.) so assuming it to be the same across
suspend resume is a safe assumption.

Kevin