linux-kernel - [PATCH v4 12/19] irqchip: gicv3-its: Register irq domain with NEXUS token

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Message-Id: <1436962613-17359-13-git-send-email-marc.zyngier@arm.com>
Date:	Wed, 15 Jul 2015 13:16:46 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Jason Cooper <jason@...edaemon.net>
Cc:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Yijing Wang <wangyijing@...wei.com>,
	Ma Jun <majun258@...wei.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Duc Dang <dhdang@....com>
Subject: [PATCH v4 12/19] irqchip: gicv3-its: Register irq domain with NEXUS token

Now that we can distinguish between multiple domains carrying the
same device_node, tag the raw ITS domain with DOMAIN_BUS_NEXUS.
This will allow MSI providers built on top of the raw ITS domain
to identify it.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 drivers/irqchip/irq-gic-v3-its.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 7c01fe4..3f95826 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1407,13 +1407,14 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 	writel_relaxed(GITS_CTLR_ENABLE, its->base + GITS_CTLR);
 
 	if (of_property_read_bool(its->msi_chip.of_node, "msi-controller")) {
-		its->domain = irq_domain_add_tree(NULL, &its_domain_ops, its);
+		its->domain = irq_domain_add_tree(node, &its_domain_ops, its);
 		if (!its->domain) {
 			err = -ENOMEM;
 			goto out_free_tables;
 		}
 
 		its->domain->parent = parent;
+		its->domain->bus_token = DOMAIN_BUS_NEXUS_MSI;
 
 		its->msi_chip.domain = its_pci_msi_alloc_domain(node,
 								its->domain);
-- 
2.1.4

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