[PATCH v14 10/17] powerpc/PCI: Keep resource idx order with bridge register number

[Yinghai Lu]

Same as sparc version.

Make resource with consistent sequence
like other arch or directly from pci_read_bridge_bases(),
even when non-pref mmio is missing, or out of ordering in firmware reporting.

Just hold i = 1 for non pref mmio, and i = 2 for pref mmio.

Signed-off-by: Yinghai Lu <ying...@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
---
 arch/powerpc/kernel/pci_of_scan.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/pci_of_scan.c 
b/arch/powerpc/kernel/pci_of_scan.c
index 526ac67..719f225 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -252,7 +252,7 @@ void of_scan_pci_bridge(struct pci_dev *dev)
                bus->resource[i] = res;
                ++res;
        }
-       i = 1;
+       i = 3;
        for (; len >= 32; len -= 32, ranges += 8) {
                flags = pci_parse_of_flags(of_read_number(ranges, 1), 1);
                size = of_read_number(&ranges[6], 2);
@@ -265,6 +265,12 @@ void of_scan_pci_bridge(struct pci_dev *dev)
                                       " for bridge %s\n", node->full_name);
                                continue;
                        }
+               } else if ((flags & IORESOURCE_PREFETCH) &&
+                          !bus->resource[2]->flags) {
+                       res = bus->resource[2];
+               } else if (((flags & (IORESOURCE_MEM | IORESOURCE_PREFETCH)) ==
+                           IORESOURCE_MEM) && !bus->resource[1]->flags) {
+                       res = bus->resource[1];
                } else {
                        if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
                                printk(KERN_ERR "PCI: too many memory ranges"
-- 
2.8.3