diff options
| -rw-r--r-- | drivers/pci/probe.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 6d7ab9bb0d5a..1e34d211389a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -15,6 +15,7 @@ #include <linux/pci-aspm.h> #include <linux/aer.h> #include <linux/acpi.h> +#include <linux/irqdomain.h> #include <asm-generic/pci-bridge.h> #include "pci.h" @@ -675,6 +676,20 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) if (!d) d = pci_host_bridge_acpi_msi_domain(bus); +#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN + /* + * If no IRQ domain was found via the OF tree, try looking it up + * directly through the fwnode_handle. + */ + if (!d) { + struct fwnode_handle *fwnode = pci_root_bus_fwnode(bus); + + if (fwnode) + d = irq_find_matching_fwnode(fwnode, + DOMAIN_BUS_PCI_MSI); + } +#endif + return d; } |