linux-kernel - [tip:irq/core] PCI/MSI: Register irq domain with specific token

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Date:	Wed, 29 Jul 2015 15:25:14 -0700
From:	tip-bot for Marc Zyngier <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	hanjun.guo@...aro.org, jason@...edaemon.net, hpa@...or.com,
	majun258@...wei.com, bhelgaas@...gle.com,
	linux-arm-kernel@...ts.infradead.org, mingo@...nel.org,
	jiang.liu@...ux.intel.com, dhdang@....com,
	linux-kernel@...r.kernel.org, wangyijing@...wei.com,
	marc.zyngier@....com, tglx@...utronix.de, lorenzo.pieralisi@....com
Subject: [tip:irq/core] PCI/MSI: Register irq domain with specific token

Commit-ID:  0380839dc90c53e24ddfa0f17ad909c2ddc345c2
Gitweb:     http://git.kernel.org/tip/0380839dc90c53e24ddfa0f17ad909c2ddc345c2
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Tue, 28 Jul 2015 14:46:09 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 30 Jul 2015 00:14:37 +0200

PCI/MSI: Register irq domain with specific token

When creating a PCI/MSI domain, tag it with DOMAIN_BUS_PCI_MSI so
that it can be looked-up using irq_find_matching_host().

Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
Reviewed-by: Hanjun Guo <hanjun.guo@...aro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Cc: <linux-arm-kernel@...ts.infradead.org>
Cc: Yijing Wang <wangyijing@...wei.com>
Cc: Ma Jun <majun258@...wei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc: Duc Dang <dhdang@....com>
Cc: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Jason Cooper <jason@...edaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 drivers/pci/msi.c         | 9 ++++++++-
 include/linux/irqdomain.h | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index cd4c78c..3aae7c9 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1273,12 +1273,19 @@ struct irq_domain *pci_msi_create_irq_domain(struct device_node *node,
 					     struct msi_domain_info *info,
 					     struct irq_domain *parent)
 {
+	struct irq_domain *domain;
+
 	if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
 		pci_msi_domain_update_dom_ops(info);
 	if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
 		pci_msi_domain_update_chip_ops(info);
 
-	return msi_create_irq_domain(node, info, parent);
+	domain = msi_create_irq_domain(node, info, parent);
+	if (!domain)
+		return NULL;
+
+	domain->bus_token = DOMAIN_BUS_PCI_MSI;
+	return domain;
 }
 
 /**
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 91a83ad..25e9e66 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -54,6 +54,7 @@ struct irq_data;
  */
 enum irq_domain_bus_token {
 	DOMAIN_BUS_ANY		= 0,
+	DOMAIN_BUS_PCI_MSI,
 };
 
 /**
--
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