1 files changed, 19 insertions, 13 deletions

diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index ad4a1a12a1ae..eae0812f01a5 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -1406,13 +1406,20 @@ lba_hw_init(struct lba_device *d)
         return 0;
 }
 
-
+/*
+ * Unfortunately, when firmware numbers busses, it doesn't take into account
+ * Cardbus bridges.  So we have to renumber the busses to suit ourselves.
+ * Elroy/Mercury don't actually know what bus number they're attached to;
+ * we use bus 0 to indicate the directly attached bus and any other bus
+ * number will be taken care of by the PCI-PCI bridge.
+ */
+static unsigned int lba_next_bus = 0;
 
 /*
-** Determine if lba should claim this chip (return 0) or not (return 1).
-** If so, initialize the chip and tell other partners in crime they
-** have work to do.
-*/
+ * Determine if lba should claim this chip (return 0) or not (return 1).
+ * If so, initialize the chip and tell other partners in crime they
+ * have work to do.
+ */
 static int __init
 lba_driver_probe(struct parisc_device *dev)
 {
@@ -1478,9 +1485,7 @@ lba_driver_probe(struct parisc_device *dev)
                 return -ENODEV;
         }
 
-        /*
-        ** Tell I/O SAPIC driver we have a IRQ handler/region.
-        */
+        /* Tell I/O SAPIC driver we have a IRQ handler/region. */
         tmp_obj = iosapic_register(dev->hpa.start + LBA_IOSAPIC_BASE);
 
         /* NOTE: PCI devices (e.g. 103c:1005 graphics card) which don't
@@ -1529,16 +1534,17 @@ lba_driver_probe(struct parisc_device *dev)
                 lba_legacy_resources(dev, lba_dev);
         }
 
-        /* 
-        ** Tell PCI support another PCI bus was found.
-        ** Walks PCI bus for us too.
-        */
+        if (lba_dev->hba.bus_num.start < lba_next_bus)
+                lba_dev->hba.bus_num.start = lba_next_bus;
+
         dev->dev.platform_data = lba_dev;
         lba_bus = lba_dev->hba.hba_bus =
                 pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start,
                                 cfg_ops, NULL);
-        if (lba_bus)
+        if (lba_bus) {
+                lba_next_bus = lba_bus->subordinate + 1;
                 pci_bus_add_devices(lba_bus);
+        }
 
         /* This is in lieu of calling pci_assign_unassigned_resources() */
         if (is_pdc_pat()) {