From: York Sun <yorksun@freescale.com>
Date: Mon, 4 Jun 2007 16:56:42 +0000 (-0500)
Subject: [POWERPC] Let subordinate transparent bridges be transparent.
X-Git-Tag: v2.6.23-rc1~767^2^2~87
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d8ff10c3ab1e3d4a40788442f1369e868103e43;p=linux-2.6

[POWERPC] 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 <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index e66064b509..7738a2881c 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;