diff options
Diffstat (limited to 'drivers/parisc/lba_pci.c')
| -rw-r--r-- | drivers/parisc/lba_pci.c | 32 |
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()) { |