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Diffstat (limited to 'arch/powerpc/kernel/pci-common.c')
-rw-r--r--arch/powerpc/kernel/pci-common.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 43fea543d686..7f94f760dd0c 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -980,13 +980,14 @@ static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
if (i >= 3 && bus->self->transparent)
continue;
- /* If we are going to re-assign everything, mark the resource
- * as unset and move it down to 0
+ /* If we're going to reassign everything, we can
+ * shrink the P2P resource to have size as being
+ * of 0 in order to save space.
*/
if (pci_has_flag(PCI_REASSIGN_ALL_RSRC)) {
res->flags |= IORESOURCE_UNSET;
- res->end -= res->start;
res->start = 0;
+ res->end = -1;
continue;
}
@@ -1248,7 +1249,14 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
pr_warning("PCI: Cannot allocate resource region "
"%d of PCI bridge %d, will remap\n", i, bus->number);
clear_resource:
- res->start = res->end = 0;
+ /* The resource might be figured out when doing
+ * reassignment based on the resources required
+ * by the downstream PCI devices. Here we set
+ * the size of the resource to be 0 in order to
+ * save more space.
+ */
+ res->start = 0;
+ res->end = -1;
res->flags = 0;
}