diff options
Diffstat (limited to 'drivers/pci/hotplug/acpiphp_glue.c')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 64 |
1 files changed, 46 insertions, 18 deletions
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 7dc8dd00135..ad6fd669549 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -100,11 +100,11 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val, PCI_PRIMARY_BUS, &buses); - if (((buses >> 8) & 0xff) != bus->secondary) { + if (((buses >> 8) & 0xff) != bus->busn_res.start) { buses = (buses & 0xff000000) | ((unsigned int)(bus->primary) << 0) - | ((unsigned int)(bus->secondary) << 8) - | ((unsigned int)(bus->subordinate) << 16); + | ((unsigned int)(bus->busn_res.start) << 8) + | ((unsigned int)(bus->busn_res.end) << 16); pci_write_config_dword(bus->self, PCI_PRIMARY_BUS, buses); } return NOTIFY_OK; @@ -132,6 +132,15 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) if (!acpi_pci_check_ejectable(pbus, handle) && !is_dock_device(handle)) return AE_OK; + status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr); + if (ACPI_FAILURE(status)) { + warn("can't evaluate _ADR (%#x)\n", status); + return AE_OK; + } + + device = (adr >> 16) & 0xffff; + function = adr & 0xffff; + pdev = pbus->self; if (pdev && pci_is_pcie(pdev)) { tmp = acpi_find_root_bridge_handle(pdev); @@ -144,10 +153,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) } } - acpi_evaluate_integer(handle, "_ADR", NULL, &adr); - device = (adr >> 16) & 0xffff; - function = adr & 0xffff; - newfunc = kzalloc(sizeof(struct acpiphp_func), GFP_KERNEL); if (!newfunc) return AE_NO_MEMORY; @@ -689,7 +694,7 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus) * bus->subordinate value because it could have * padding in it. */ - max = bus->secondary; + max = bus->busn_res.start; list_for_each(tmp, &bus->children) { n = pci_bus_max_busnr(pci_bus_b(tmp)); @@ -875,6 +880,24 @@ static void disable_bridges(struct pci_bus *bus) } } +/* return first device in slot, acquiring a reference on it */ +static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot) +{ + struct pci_bus *bus = slot->bridge->pci_bus; + struct pci_dev *dev; + struct pci_dev *ret = NULL; + + down_read(&pci_bus_sem); + list_for_each_entry(dev, &bus->devices, bus_list) + if (PCI_SLOT(dev->devfn) == slot->device) { + ret = pci_dev_get(dev); + break; + } + up_read(&pci_bus_sem); + + return ret; +} + /** * disable_device - disable a slot * @slot: ACPI PHP slot @@ -890,6 +913,7 @@ static int disable_device(struct acpiphp_slot *slot) pdev = pci_get_slot(bus, PCI_DEVFN(slot->device, 0)); if (!pdev) goto err_exit; + pci_dev_put(pdev); list_for_each_entry(func, &slot->funcs, sibling) { if (func->bridge) { @@ -898,18 +922,22 @@ static int disable_device(struct acpiphp_slot *slot) (u32)1, NULL, NULL); func->bridge = NULL; } + } - pdev = pci_get_slot(slot->bridge->pci_bus, - PCI_DEVFN(slot->device, func->function)); - if (pdev) { - pci_stop_bus_device(pdev); - if (pdev->subordinate) { - disable_bridges(pdev->subordinate); - pci_disable_device(pdev); - } - __pci_remove_bus_device(pdev); - pci_dev_put(pdev); + /* + * enable_device() enumerates all functions in this device via + * pci_scan_slot(), whether they have associated ACPI hotplug + * methods (_EJ0, etc.) or not. Therefore, we remove all functions + * here. + */ + while ((pdev = dev_in_slot(slot))) { + pci_stop_bus_device(pdev); + if (pdev->subordinate) { + disable_bridges(pdev->subordinate); + pci_disable_device(pdev); } + __pci_remove_bus_device(pdev); + pci_dev_put(pdev); } list_for_each_entry(func, &slot->funcs, sibling) { |