[PATCH v2 6/9] Let subordinate transparent bridges be transparent.

In pcibios_fixup_bus(), bridges that are subordinate
to transparent bridges were still relocating their
IORESOURCE_IO and IO_RESOURCE_MEM start and end values.

Fix this by preventing the transparent bridge from
relocating the start and end values, thus allowing the
subordinate non-transparent bridge full molestation rights.

Signed-off-by: York Sun <redacted>
Signed-off-by: Andy Fleming <redacted>
Signed-off-by: Jon Loeliger <redacted>
---

This is the variant that was suggested by Ben H.

 arch/powerpc/kernel/pci_32.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index e66064b..7738a28 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c

@@ -1370,7 +1370,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
 		for (i = 0; i < 4; ++i) {
 			if ((res = bus->resource[i]) == NULL)
 				continue;
-			if (!res->flags)
+			if (!res->flags || bus->self->transparent)
 				continue;
 			if (io_offset && (res->flags & IORESOURCE_IO)) {
 				res->start += io_offset;

-- 
1.5.0.3

On Mon, 2007-06-04 at 17:30 -0500, Jon Loeliger wrote:

In pcibios_fixup_bus(), bridges that are subordinate
to transparent bridges were still relocating their
IORESOURCE_IO and IO_RESOURCE_MEM start and end values.

Fix this by preventing the transparent bridge from
relocating the start and end values, thus allowing the
subordinate non-transparent bridge full molestation rights.

Signed-off-by: York Sun <redacted>
Signed-off-by: Andy Fleming <redacted>
Signed-off-by: Jon Loeliger <redacted>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>