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ARM64: PCI: Add acpi_pci_bus_find_domain_nr()

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Extend pci_bus_find_domain_nr() so it can find the domain from either:

  - ACPI, via the new acpi_pci_bus_find_domain_nr() interface, or
  - DT, via of_pci_bus_find_domain_nr()

Note that this is only used for CONFIG_PCI_DOMAINS_GENERIC=y, so it does
not affect x86 or ia64.

[bhelgaas: changelog]
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Tomasz Nowicki
2016-06-10 15:36:26 -05:00
committed by Bjorn Helgaas
parent 1a4f93f711
commit 2ab51ddeca
3 changed files with 16 additions and 1 deletions
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6
include/linux/pci.h
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@@ -1390,6 +1390,12 @@ static inline int pci_domain_nr(struct pci_bus *bus)
{
return bus->domain_nr;
}
#ifdef CONFIG_ACPI
int acpi_pci_bus_find_domain_nr(struct pci_bus *bus);
#else
static inline int acpi_pci_bus_find_domain_nr(struct pci_bus *bus)
{ return 0; }
#endif
int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent);
#endif