core/pci: Add phb->ops->device_remove

This adds another PHB callback (device_remove()), corresponding to
device_init(). With it, the PHB3 layer can receive notification
upon PCI topology changes. This functionality will be used by the
subsequent patches.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/core/pci.c b/core/pci.c
index 6864e6f..a8b4b69 100644
--- a/core/pci.c
+++ b/core/pci.c
@@ -526,6 +526,9 @@ void pci_remove_bus(struct phb *phb, struct list_head *list)
 	list_for_each_safe(list, pd, tmp, link) {
 		pci_remove_bus(phb, &pd->children);
 
+		if (phb->ops->device_remove)
+			phb->ops->device_remove(phb, pd);
+
 		/* Release device node and PCI slot */
 		if (pd->dn)
 			dt_free(pd->dn);