PCI: rcar: Set root bus nr to that provided in DT

On ARM64, setting the root bus number to -1 causes probe failure.
Moreover, we should use the bus number specified in the DT as we could have
multiple PCIe controllers with different bus ranges.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
index 6057e3193e0f79a3f4f08b064dc44525734d91ec..8e583c200f026fc3954c4e334c0be508b051d5ad 100644 (file)
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c
@@ -362,7 +362,7 @@ static int rcar_pcie_setup(int nr, struct list_head *resource, struct rcar_pcie
        struct resource *res;
        int i;
 
-       pcie->root_bus_nr = -1;
+       pcie->root_bus_nr = pcie->busn.start;
 
        /* Setup PCI resources */
        for (i = 0; i < RCAR_PCI_MAX_RESOURCES; i++) {