[PATCH 1/4] arm64: pci: acpi: Use pci_assign_unassigned_root_bus_resources()

Benjamin Herrenschmidt
2019-06-15T00:30:05Z

Instead of the simpler

pci_bus_size_bridges(bus);
pci_bus_assign_resources(bus);

Use pci_assign_unassigned_root_bus_resources(). This should have no effect
as long as we are reassigning everything. Once we start honoring FW
resource allocations, this will bring up the "reallocation" feature
which can help making room for SR-IOV when necessary.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm64/kernel/pci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index bb85e2f4603f..1419b1b4e9b9 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -193,8 +193,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
if (!bus)
return NULL;

- pci_bus_size_bridges(bus);
- pci_bus_assign_resources(bus);
+ pci_assign_unassigned_root_bus_resources(bus);

list_for_each_entry(child, &bus->children, node)
pcie_bus_configure_settings(child);
--
2.17.1