[SPARC64]: Be more resiliant with PCI I/O space regs.

If we miss on the ranges, just toss the translation up to the parent
instead of failing.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index 7455f5d05519..16cc46a71872 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -537,6 +537,13 @@ static int __init build_one_resource(struct device_node *parent,
                         return 0;
         }
 
+        /* When we miss an I/O space match on PCI, just pass it up
+         * to the next PCI bridge and/or controller.
+         */
+        if (!strcmp(bus->name, "pci") &&
+            (addr[0] & 0x03000000) == 0x01000000)
+                return 0;
+
         return 1;
 }