--- zzzz-none-000/linux-3.10.107/drivers/pci/remove.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/pci/remove.c	2021-02-04 17:41:59.000000000 +0000
@@ -7,8 +7,6 @@
 {
 	int i;
 
- 	msi_remove_pci_irq_vectors(dev);
-
 	pci_cleanup_rom(dev);
 	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
 		struct resource *res = dev->resource + i;
@@ -24,7 +22,7 @@
 	if (dev->is_added) {
 		pci_proc_detach_device(dev);
 		pci_remove_sysfs_dev_files(dev);
-		device_del(&dev->dev);
+		device_release_driver(&dev->dev);
 		dev->is_added = 0;
 	}
 
@@ -34,6 +32,11 @@
 
 static void pci_destroy_dev(struct pci_dev *dev)
 {
+	if (!dev->dev.kobj.parent)
+		return;
+
+	device_del(&dev->dev);
+
 	down_write(&pci_bus_sem);
 	list_del(&dev->bus_list);
 	up_write(&pci_bus_sem);
@@ -112,6 +115,14 @@
 }
 EXPORT_SYMBOL(pci_stop_and_remove_bus_device);
 
+void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev)
+{
+	pci_lock_rescan_remove();
+	pci_stop_and_remove_bus_device(dev);
+	pci_unlock_rescan_remove();
+}
+EXPORT_SYMBOL_GPL(pci_stop_and_remove_bus_device_locked);
+
 void pci_stop_root_bus(struct pci_bus *bus)
 {
 	struct pci_dev *child, *tmp;
@@ -126,8 +137,9 @@
 		pci_stop_bus_device(child);
 
 	/* stop the host bridge */
-	device_del(&host_bridge->dev);
+	device_release_driver(&host_bridge->dev);
 }
+EXPORT_SYMBOL_GPL(pci_stop_root_bus);
 
 void pci_remove_root_bus(struct pci_bus *bus)
 {
@@ -145,5 +157,6 @@
 	host_bridge->bus = NULL;
 
 	/* remove the host bridge */
-	put_device(&host_bridge->dev);
+	device_unregister(&host_bridge->dev);
 }
+EXPORT_SYMBOL_GPL(pci_remove_root_bus);