[PATCH] 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>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index fb9bf1e4d03..f56569f7443 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -508,6 +508,13 @@ 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;
 }