[SPARC64]: Add dummy host controller to root of all PCI domains.

We fake up a dummy one in all cases because that is the simplest
thing to do and it happens to be necessary for hypervisor systems.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index a8c12c1e8039..52bd4563492d 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -612,6 +612,9 @@ static int pci_sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
         unsigned int func = PCI_FUNC(devfn);
         unsigned long ret;
 
+        if (bus_dev == pbm->pci_bus && devfn == 0x00)
+                return pci_host_bridge_read_pci_cfg(bus_dev, devfn, where,
+                                                    size, value);
         if (pci_sun4v_out_of_range(pbm, bus, device, func)) {
                 ret = ~0UL;
         } else {
@@ -650,6 +653,9 @@ static int pci_sun4v_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
         unsigned int func = PCI_FUNC(devfn);
         unsigned long ret;
 
+        if (bus_dev == pbm->pci_bus && devfn == 0x00)
+                return pci_host_bridge_write_pci_cfg(bus_dev, devfn, where,
+                                                     size, value);
         if (pci_sun4v_out_of_range(pbm, bus, device, func)) {
                 /* Do nothing. */
         } else {