diff options
Diffstat (limited to 'drivers/pci/hotplug')
| -rw-r--r-- | drivers/pci/hotplug/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/pci/hotplug/pciehp_pci.c | 9 | ||||
| -rw-r--r-- | drivers/pci/hotplug/s390_pci_hpc.c | 63 |
3 files changed, 12 insertions, 67 deletions
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig index bb7ebb22db0..0a648af8953 100644 --- a/drivers/pci/hotplug/Kconfig +++ b/drivers/pci/hotplug/Kconfig @@ -3,16 +3,13 @@ # menuconfig HOTPLUG_PCI - tristate "Support for PCI Hotplug" + bool "Support for PCI Hotplug" depends on PCI && SYSFS ---help--- Say Y here if you have a motherboard with a PCI Hotplug controller. This allows you to add and remove PCI cards while the machine is powered up and running. - To compile this driver as a module, choose M here: the - module will be called pci_hotplug. - When in doubt, say N. if HOTPLUG_PCI @@ -149,7 +146,7 @@ config HOTPLUG_PCI_SGI When in doubt, say N. config HOTPLUG_PCI_S390 - tristate "System z PCI Hotplug Support" + bool "System z PCI Hotplug Support" depends on S390 && 64BIT help Say Y here if you want to use the System z PCI Hotplug diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c index aac7a40e4a4..0e0d0f7f63f 100644 --- a/drivers/pci/hotplug/pciehp_pci.c +++ b/drivers/pci/hotplug/pciehp_pci.c @@ -92,7 +92,14 @@ int pciehp_unconfigure_device(struct slot *p_slot) if (ret) presence = 0; - list_for_each_entry_safe(dev, temp, &parent->devices, bus_list) { + /* + * Stopping an SR-IOV PF device removes all the associated VFs, + * which will update the bus->devices list and confuse the + * iterator. Therefore, iterate in reverse so we remove the VFs + * first, then the PF. We do the same in pci_stop_bus_device(). + */ + list_for_each_entry_safe_reverse(dev, temp, &parent->devices, + bus_list) { pci_dev_get(dev); if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) { pci_read_config_byte(dev, PCI_BRIDGE_CONTROL, &bctl); diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c index ea3fa90d020..66e505ca24e 100644 --- a/drivers/pci/hotplug/s390_pci_hpc.c +++ b/drivers/pci/hotplug/s390_pci_hpc.c @@ -79,8 +79,6 @@ static int enable_slot(struct hotplug_slot *hotplug_slot) if (rc) goto out_deconfigure; - slot->zdev->state = ZPCI_FN_STATE_ONLINE; - pci_scan_slot(slot->zdev->bus, ZPCI_DEVFN); pci_bus_add_devices(slot->zdev->bus); @@ -148,7 +146,7 @@ static struct hotplug_slot_ops s390_hotplug_slot_ops = { .get_adapter_status = get_adapter_status, }; -static int init_pci_slot(struct zpci_dev *zdev) +int zpci_init_slot(struct zpci_dev *zdev) { struct hotplug_slot *hotplug_slot; struct hotplug_slot_info *info; @@ -202,7 +200,7 @@ error: return -ENOMEM; } -static void exit_pci_slot(struct zpci_dev *zdev) +void zpci_exit_slot(struct zpci_dev *zdev) { struct list_head *tmp, *n; struct slot *slot; @@ -215,60 +213,3 @@ static void exit_pci_slot(struct zpci_dev *zdev) pci_hp_deregister(slot->hotplug_slot); } } - -static struct pci_hp_callback_ops hp_ops = { - .create_slot = init_pci_slot, - .remove_slot = exit_pci_slot, -}; - -static void __init init_pci_slots(void) -{ - struct zpci_dev *zdev; - - /* - * Create a structure for each slot, and register that slot - * with the pci_hotplug subsystem. - */ - mutex_lock(&zpci_list_lock); - list_for_each_entry(zdev, &zpci_list, entry) { - init_pci_slot(zdev); - } - mutex_unlock(&zpci_list_lock); -} - -static void __exit exit_pci_slots(void) -{ - struct list_head *tmp, *n; - struct slot *slot; - - /* - * Unregister all of our slots with the pci_hotplug subsystem. - * Memory will be freed in release_slot() callback after slot's - * lifespan is finished. - */ - list_for_each_safe(tmp, n, &s390_hotplug_slot_list) { - slot = list_entry(tmp, struct slot, slot_list); - list_del(&slot->slot_list); - pci_hp_deregister(slot->hotplug_slot); - } -} - -static int __init pci_hotplug_s390_init(void) -{ - if (!s390_pci_probe) - return -EOPNOTSUPP; - - zpci_register_hp_ops(&hp_ops); - init_pci_slots(); - - return 0; -} - -static void __exit pci_hotplug_s390_exit(void) -{ - exit_pci_slots(); - zpci_deregister_hp_ops(); -} - -module_init(pci_hotplug_s390_init); -module_exit(pci_hotplug_s390_exit); |