diff options
Diffstat (limited to 'drivers/pci/hotplug/shpchp_pci.c')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_pci.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/pci/hotplug/shpchp_pci.c b/drivers/pci/hotplug/shpchp_pci.c index b0e83132542..2bf69fe1926 100644 --- a/drivers/pci/hotplug/shpchp_pci.c +++ b/drivers/pci/hotplug/shpchp_pci.c @@ -40,7 +40,9 @@ int __ref shpchp_configure_device(struct slot *p_slot) struct controller *ctrl = p_slot->ctrl; struct pci_dev *bridge = ctrl->pci_dev; struct pci_bus *parent = bridge->subordinate; - int num; + int num, ret = 0; + + pci_lock_rescan_remove(); dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0)); if (dev) { @@ -48,13 +50,15 @@ int __ref shpchp_configure_device(struct slot *p_slot) "at %04x:%02x:%02x, cannot hot-add\n", pci_name(dev), pci_domain_nr(parent), p_slot->bus, p_slot->device); pci_dev_put(dev); - return -EINVAL; + ret = -EINVAL; + goto out; } num = pci_scan_slot(parent, PCI_DEVFN(p_slot->device, 0)); if (num == 0) { ctrl_err(ctrl, "No new device found\n"); - return -ENODEV; + ret = -ENODEV; + goto out; } list_for_each_entry(dev, &parent->devices, bus_list) { @@ -75,7 +79,9 @@ int __ref shpchp_configure_device(struct slot *p_slot) pci_bus_add_devices(parent); - return 0; + out: + pci_unlock_rescan_remove(); + return ret; } int shpchp_unconfigure_device(struct slot *p_slot) @@ -89,6 +95,8 @@ int shpchp_unconfigure_device(struct slot *p_slot) ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n", __func__, pci_domain_nr(parent), p_slot->bus, p_slot->device); + pci_lock_rescan_remove(); + list_for_each_entry_safe(dev, temp, &parent->devices, bus_list) { if (PCI_SLOT(dev->devfn) != p_slot->device) continue; @@ -108,6 +116,8 @@ int shpchp_unconfigure_device(struct slot *p_slot) pci_stop_and_remove_bus_device(dev); pci_dev_put(dev); } + + pci_unlock_rescan_remove(); return rc; } |