| Message ID | 1444769183-12374-3-git-send-email-Suravee.Suthikulpanit@amd.com |
|---|---|
| State | New |
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diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index a32ba75..0e21ef4 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -9,7 +9,9 @@ #include <linux/delay.h> #include <linux/init.h> +#include <linux/irqdomain.h> #include <linux/pci.h> +#include <linux/msi.h> #include <linux/pci_hotplug.h> #include <linux/module.h> #include <linux/pci-aspm.h> @@ -689,6 +691,17 @@ static struct acpi_bus_type acpi_pci_bus = { .cleanup = pci_acpi_cleanup, }; +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) +{ + struct irq_domain *dom = NULL; + struct fwnode_handle *fwnode = pci_msi_get_fwnode(&bus->dev); + + if (fwnode) + dom = irq_find_matching_fwnode(fwnode, + DOMAIN_BUS_PCI_MSI); + return dom; +} + static int __init acpi_pci_init(void) { int ret; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 0dbc7fb..bea1840 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -671,6 +671,8 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) * should be called from here. */ d = pci_host_bridge_of_msi_domain(bus); + if (!d) + d = pci_host_bridge_acpi_msi_domain(bus); return d; } diff --git a/include/linux/pci.h b/include/linux/pci.h index e90eb22..4a7f6a9 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1925,6 +1925,13 @@ static inline struct irq_domain * pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } #endif /* CONFIG_OF */ +#ifdef CONFIG_ACPI +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); +#else +static inline struct irq_domain * +pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } +#endif + #ifdef CONFIG_EEH static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) {
This patch introduces pci_host_bridge_acpi_msi_domain(), which returns the MSI domain of the specified PCI host bridge with DOMAIN_BUS_PCI_MSI bus token. Then, it is assigned to pci device. Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> --- drivers/pci/pci-acpi.c | 13 +++++++++++++ drivers/pci/probe.c | 2 ++ include/linux/pci.h | 7 +++++++ 3 files changed, 22 insertions(+)