diff options
Diffstat (limited to 'arch/s390/pci/pci_bus.c')
| -rw-r--r-- | arch/s390/pci/pci_bus.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/s390/pci/pci_bus.c b/arch/s390/pci/pci_bus.c index 755b46f4c595..ace9dbbe3bc1 100644 --- a/arch/s390/pci/pci_bus.c +++ b/arch/s390/pci/pci_bus.c @@ -30,6 +30,39 @@ static LIST_HEAD(zbus_list); static DEFINE_SPINLOCK(zbus_list_lock); static int zpci_nb_devices; +/* zpci_bus_remove_device - Removes the given zdev from the PCI core + * @zdev: the zdev to be removed from the PCI core + * @set_error: if true the device's error state is set to permanent failure + * + * Sets a zPCI device to a configured but offline state; the zPCI + * device is still accessible through its hotplug slot and the zPCI + * API but is removed from the common code PCI bus, making it + * no longer available to drivers. + */ +void zpci_bus_remove_device(struct zpci_dev *zdev, bool set_error) +{ + struct zpci_bus *zbus = zdev->zbus; + struct pci_dev *pdev; + + if (!zdev->zbus->bus) + return; + + pdev = pci_get_slot(zbus->bus, zdev->devfn); + if (pdev) { + if (set_error) + pdev->error_state = pci_channel_io_perm_failure; + if (pdev->is_virtfn) { + zpci_iov_remove_virtfn(pdev, zdev->vfn); + /* balance pci_get_slot */ + pci_dev_put(pdev); + return; + } + pci_stop_and_remove_bus_device_locked(pdev); + /* balance pci_get_slot */ + pci_dev_put(pdev); + } +} + /* zpci_bus_scan * @zbus: the zbus holding the zdevices * @ops: the pci operations |