[patch 58/69] SPARC64: Be more resiliant with PCI I/O space regs.

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From: David Miller <davem@xxxxxxxxxxxxx>

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

Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>

---
 arch/sparc64/kernel/of_device.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- linux-2.6.21.1.orig/arch/sparc64/kernel/of_device.c
+++ linux-2.6.21.1/arch/sparc64/kernel/of_device.c
@@ -508,6 +508,13 @@ static int __init build_one_resource(str
 			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;
 }
 

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