linux-kernel - [RFC part2 PATCH 6/9] Irqchip / gic: Set as default domain so we can access from ACPI

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Date:	Wed,  4 Dec 2013 00:39:10 +0800
From:	Hanjun Guo <hanjun.guo@...aro.org>
To:	"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>
Cc:	linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Grant Likely <grant.likely@...aro.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Olof Johansson <olof@...om.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Mark Rutland <mark.rutland@....com>,
	Jon Masters <jonathan@...masters.org>, patches@...aro.org,
	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	linaro-acpi@...ts.linaro.org, Hanjun Guo <hanjun.guo@...aro.org>,
	Graeme Gregory <graeme.gregory@...aro.org>
Subject: [RFC part2 PATCH 6/9] Irqchip / gic: Set as default domain so we can access from ACPI

If we set the GIC as the default domain then we can access it for IRQ
mapping within the ACPI code.

Signed-off-by: Graeme Gregory <graeme.gregory@...aro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@...aro.org>
---
 drivers/irqchip/irq-gic.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 9031171..f522c9a 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -957,6 +957,13 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
 	if (WARN_ON(!gic->domain))
 		return;
 
+	/*
+	 * do not set default host for GIC domain multi-times.
+	 * FIXME: This probably needs revisited when multi GICs supported
+	 */
+	if (!gic_nr)
+		irq_set_default_host(gic->domain);
+
 #ifdef CONFIG_SMP
 	set_smp_cross_call(gic_raise_softirq);
 	register_cpu_notifier(&gic_cpu_notifier);
-- 
1.7.9.5

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