1 files changed, 41 insertions, 5 deletions

diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index bc286cbbbc9b..a25fed52f7e9 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -667,6 +667,42 @@ extend_lmmio_len(unsigned long start, unsigned long end, unsigned long lba_len)
 #define truncate_pat_collision(r,n)  (0)
 #endif
 
+static void pcibios_allocate_bridge_resources(struct pci_dev *dev)
+{
+	int idx;
+	struct resource *r;
+
+	for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) {
+		r = &dev->resource[idx];
+		if (!r->flags)
+			continue;
+		if (r->parent)	/* Already allocated */
+			continue;
+		if (!r->start || pci_claim_bridge_resource(dev, idx) < 0) {
+			/*
+			 * Something is wrong with the region.
+			 * Invalidate the resource to prevent
+			 * child resource allocations in this
+			 * range.
+			 */
+			r->start = r->end = 0;
+			r->flags = 0;
+		}
+	}
+}
+
+static void pcibios_allocate_bus_resources(struct pci_bus *bus)
+{
+	struct pci_bus *child;
+
+	/* Depth-First Search on bus tree */
+	if (bus->self)
+		pcibios_allocate_bridge_resources(bus->self);
+	list_for_each_entry(child, &bus->children, node)
+		pcibios_allocate_bus_resources(child);
+}
+
+
 /*
 ** The algorithm is generic code.
 ** But it needs to access local data structures to get the IRQ base.
@@ -693,11 +729,11 @@ lba_fixup_bus(struct pci_bus *bus)
 	** pci_alloc_primary_bus() mangles this.
 	*/
 	if (bus->parent) {
-		int i;
 		/* PCI-PCI Bridge */
 		pci_read_bridge_bases(bus);
-		for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++)
-			pci_claim_bridge_resource(bus->self, i);
+
+		/* check and allocate bridge resources */
+		pcibios_allocate_bus_resources(bus);
 	} else {
 		/* Host-PCI Bridge */
 		int err;
@@ -1613,14 +1649,14 @@ lba_driver_probe(struct parisc_device *dev)
 	return 0;
 }
 
-static struct parisc_device_id lba_tbl[] = {
+static const struct parisc_device_id lba_tbl[] __initconst = {
 	{ HPHW_BRIDGE, HVERSION_REV_ANY_ID, ELROY_HVERS, 0xa },
 	{ HPHW_BRIDGE, HVERSION_REV_ANY_ID, MERCURY_HVERS, 0xa },
 	{ HPHW_BRIDGE, HVERSION_REV_ANY_ID, QUICKSILVER_HVERS, 0xa },
 	{ 0, }
 };
 
-static struct parisc_driver lba_driver = {
+static struct parisc_driver lba_driver __refdata = {
 	.name =		MODULE_NAME,
 	.id_table =	lba_tbl,
 	.probe =	lba_driver_probe,