PCI: read bridge windows before filling in subtractive decode resources

No functional change; this fills in the bus subtractive decode resources
after reading the bridge window information rather than before.  Also,
print out the subtractive decode resources as we already do for the
positive decode windows.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 10 insertions, 5 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 4b47b4bfb066..70c4ed2e67cc 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -403,14 +403,19 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
                  child->secondary, child->subordinate,
                  dev->transparent ? " (subtractive decode)" : "");
 
-        if (dev->transparent) {
-                for (i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
-                        child->resource[i] = child->parent->resource[i - 3];
-        }
-
         pci_read_bridge_io(child);
         pci_read_bridge_mmio(child);
         pci_read_bridge_mmio_pref(child);
+
+        if (dev->transparent) {
+                for (i = 3; i < PCI_BUS_NUM_RESOURCES; i++) {
+                        child->resource[i] = child->parent->resource[i - 3];
+                        if (child->resource[i])
+                                dev_printk(KERN_DEBUG, &dev->dev,
+                                           "  bridge window %pR (subtractive decode)\n",
+                                           child->resource[i]);
+                }
+        }
 }
 
 static struct pci_bus * pci_alloc_bus(void)