When mapping an open firmware device tree node to a resource,
check if the device is on the "isa" legacy bus. In this case,
pci_address_to_pio() should not be used since that function is only
for addresses above the 64KB reserved region.
This was necessary to get IPMI working on a board that accesses
the IPMI controller via the legacy I/O region.
Signed-off-by: Nate Case <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/prom_parse.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index 90eb3a3..28d354d 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -622,7 +622,15 @@ static int __of_address_to_resource(struct device_node
*dev, const u32 *addrp,
memset(r, 0, sizeof(struct resource));
if (flags & IORESOURCE_IO) {
unsigned long port;
- port = pci_address_to_pio(taddr);
+ struct device_node *parent;
+
+ parent = of_get_parent(dev);
+ if (of_bus_isa_match(parent))
+ port = (unsigned long) taddr;
+ else
+ port = pci_address_to_pio(taddr);
+ of_node_put(parent);
+
if (port == (unsigned long)-1)
return -EINVAL;
r->start = port;
--
1.5.4.4
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