[PATCH v5 02/19] PCI: MSI: Register irq domain with specific token

Marc Zyngier
2015-07-23T09:32:15Z

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().

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
drivers/pci/msi.c | 8 +++++++-
include/linux/irqdomain.h | 1 +
2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 373d96e..ef4ec6e 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1273,12 +1273,18 @@ 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)
+ 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,
};

/**
--
2.1.4