linux-kernel - Re: [RFC part1 PATCH 5/7] ARM64 / ACPI: Introduce arm

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Message-Id: <201312050438.05117.arnd@arndb.de>
Date:	Thu, 5 Dec 2013 04:38:04 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Hanjun Guo <hanjun.guo@...aro.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"Russell King - ARM Linux" <linux@....linux.org.uk>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	linaro-kernel@...ts.linaro.org,
	Graeme Gregory <graeme.gregory@...aro.org>,
	Al Stone <al.stone@...aro.org>, patches@...aro.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Olof Johansson <olof@...om.net>, linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	linaro-acpi@...ts.linaro.org, linux-acpi@...r.kernel.org,
	Jon Masters <jonathan@...masters.org>,
	Grant Likely <grant.likely@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [RFC part1 PATCH 5/7] ARM64 / ACPI: Introduce arm_core.c and its related head file

On Tuesday 03 December 2013, Hanjun Guo wrote:
> +static unsigned int gsi_to_irq(unsigned int gsi)
> +{
> +       int irq = irq_create_mapping(NULL, gsi);
> +
> +       return irq;
> +}

I think this could use a comment regarding your plans for IRQ domains.

Do you expect that all ACPI systems would have only a single GIC IRQ
controller and a single domain, or do you plan to add irqdomain code
later?

	Arnd
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