[Please ignore this is a test] pci-hyperv: properly handle pci bus remove

[kbuild test robot]

Hi Long,

[auto build test WARNING on pci/next]
[also build test WARNING on v4.11-rc3 next-20170324]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Long-Li/pci-hyperv-properly-handle-pci-bus-remove/20170326-180444
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: x86_64-randconfig-x016-201713 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/pci/host/pci-hyperv.c: In function 'pci_devices_present_work':
>> drivers/pci/host/pci-hyperv.c:1508:2: warning: enumeration value 'hv_pcibus_removed' not handled in switch [-Wswitch]
     switch(hbus->state) {
     ^~~~~~
>> drivers/pci/host/pci-hyperv.c:1508:2: warning: enumeration value 'hv_pcibus_maximum' not handled in switch [-Wswitch]

vim +/hv_pcibus_removed +1508 drivers/pci/host/pci-hyperv.c

  1492					put_pcichild(hpdev, hv_pcidev_ref_childlist);
  1493					list_move_tail(&hpdev->list_entry, &removed);
  1494					break;
  1495				}
  1496			}
  1497		} while (found);
  1498		spin_unlock_irqrestore(&hbus->device_list_lock, flags);
  1499	
  1500		/* Delete everything that should no longer exist. */
  1501		while (!list_empty(&removed)) {
  1502			hpdev = list_first_entry(&removed, struct hv_pci_dev,
  1503						 list_entry);
  1504			list_del(&hpdev->list_entry);
  1505			put_pcichild(hpdev, hv_pcidev_ref_initial);
  1506		}
  1507	
> 1508		switch(hbus->state) {
  1509		case hv_pcibus_installed:
  1510			/*
  1511			* Tell the core to rescan bus
  1512			* because there may have been changes.
  1513			*/
  1514			pci_lock_rescan_remove();
  1515			pci_scan_child_bus(hbus->pci_bus);
  1516			pci_unlock_rescan_remove();

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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