1 files changed, 6 insertions, 0 deletions

diff --git a/arch/powerpc/sysdev/indirect_pci.c b/arch/powerpc/sysdev/indirect_pci.c
index 3a1612253c..c7e6e859b3 100644
--- a/arch/powerpc/sysdev/indirect_pci.c
+++ b/arch/powerpc/sysdev/indirect_pci.c
@@ -103,6 +103,12 @@ indirect_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
                  (0x80000000 | (bus_no << 16)
                   | (devfn << 8) | reg | cfg_type));
 
+        /* surpress setting of PCI_PRIMARY_BUS */
+        if (hose->indirect_type & PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS)
+                if ((offset == PCI_PRIMARY_BUS) &&
+                        (bus->number == hose->first_busno))
+                val &= 0xffffff00;
+
         /*
          * Note: the caller has already checked that offset is
          * suitably aligned and that len is 1, 2 or 4.