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-rw-r--r--drivers/xen/xen-pciback/pci_stub.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 1539becad139..d57a173685f3 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -242,6 +242,15 @@ struct pci_dev *pcistub_get_pci_dev(struct xen_pcibk_device *pdev,
242 return found_dev; 242 return found_dev;
243} 243}
244 244
245/*
246 * Called when:
247 * - XenBus state has been reconfigure (pci unplug). See xen_pcibk_remove_device
248 * - XenBus state has been disconnected (guest shutdown). See xen_pcibk_xenbus_remove
249 * - 'echo BDF > unbind' on pciback module with no guest attached. See pcistub_remove
250 * - 'echo BDF > unbind' with a guest still using it. See pcistub_remove
251 *
252 * As such we have to be careful.
253 */
245void pcistub_put_pci_dev(struct pci_dev *dev) 254void pcistub_put_pci_dev(struct pci_dev *dev)
246{ 255{
247 struct pcistub_device *psdev, *found_psdev = NULL; 256 struct pcistub_device *psdev, *found_psdev = NULL;