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-rw-r--r--drivers/parisc/lba_pci.c32
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()) {

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