--- zzzz-none-000/linux-3.10.107/drivers/pci/hotplug/cpqphp_pci.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/pci/hotplug/cpqphp_pci.c	2021-02-04 17:41:59.000000000 +0000
@@ -81,11 +81,13 @@
 }
 
 
-int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func)
+int cpqhp_configure_device (struct controller *ctrl, struct pci_func *func)
 {
 	struct pci_bus *child;
 	int num;
 
+	pci_lock_rescan_remove();
+
 	if (func->pci_dev == NULL)
 		func->pci_dev = pci_get_bus_and_slot(func->bus,PCI_DEVFN(func->device, func->function));
 
@@ -100,7 +102,7 @@
 		func->pci_dev = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, func->function));
 		if (func->pci_dev == NULL) {
 			dbg("ERROR: pci_dev still null\n");
-			return 0;
+			goto out;
 		}
 	}
 
@@ -113,23 +115,27 @@
 
 	pci_dev_put(func->pci_dev);
 
+ out:
+	pci_unlock_rescan_remove();
 	return 0;
 }
 
 
-int cpqhp_unconfigure_device(struct pci_func* func)
+int cpqhp_unconfigure_device(struct pci_func *func)
 {
 	int j;
 
 	dbg("%s: bus/dev/func = %x/%x/%x\n", __func__, func->bus, func->device, func->function);
 
+	pci_lock_rescan_remove();
 	for (j=0; j<8 ; j++) {
-		struct pci_dev* temp = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, j));
+		struct pci_dev *temp = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, j));
 		if (temp) {
 			pci_dev_put(temp);
 			pci_stop_and_remove_bus_device(temp);
 		}
 	}
+	pci_unlock_rescan_remove();
 	return 0;
 }
 
@@ -197,7 +203,7 @@
 }
 
 
-static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 * dev_num)
+static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 *dev_num)
 {
 	u16 tdevice;
 	u32 work;
@@ -274,7 +280,7 @@
 }
 
 
-int cpqhp_get_bus_dev (struct controller *ctrl, u8 * bus_num, u8 * dev_num, u8 slot)
+int cpqhp_get_bus_dev (struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot)
 {
 	/* plain (bridges allowed) */
 	return PCI_GetBusDevHelper(ctrl, bus_num, dev_num, slot, 0);
@@ -291,7 +297,7 @@
  *
  * Reads configuration for all slots in a PCI bus and saves info.
  *
- * Note:  For non-hot plug busses, the slot # saved is the device #
+ * Note:  For non-hot plug buses, the slot # saved is the device #
  *
  * returns 0 if success
  */
@@ -455,11 +461,11 @@
  * cpqhp_save_slot_config
  *
  * Saves configuration info for all PCI devices in a given slot
- * including subordinate busses.
+ * including subordinate buses.
  *
  * returns 0 if success
  */
-int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot)
+int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func *new_slot)
 {
 	long rc;
 	u8 class_code;
@@ -543,7 +549,7 @@
  *
  * returns 0 if success
  */
-int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func)
+int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func *func)
 {
 	u8 cloop;
 	u8 header_type;
@@ -680,7 +686,7 @@
  *
  * returns 0 if success
  */
-int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
+int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func *func)
 {
 	u8 cloop;
 	u8 header_type;
@@ -943,7 +949,7 @@
  *
  * returns 0 if success
  */
-int cpqhp_configure_board(struct controller *ctrl, struct pci_func * func)
+int cpqhp_configure_board(struct controller *ctrl, struct pci_func *func)
 {
 	int cloop;
 	u8 header_type;
@@ -1021,7 +1027,7 @@
  *
  * returns 0 if the board is the same nonzero otherwise
  */
-int cpqhp_valid_replace(struct controller *ctrl, struct pci_func * func)
+int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func)
 {
 	u8 cloop;
 	u8 header_type;
@@ -1413,7 +1419,7 @@
  *
  * returns 0 if success
  */
-int cpqhp_return_board_resources(struct pci_func * func, struct resource_lists * resources)
+int cpqhp_return_board_resources(struct pci_func *func, struct resource_lists *resources)
 {
 	int rc = 0;
 	struct pci_resource *node;
@@ -1469,7 +1475,7 @@
  *
  * Puts node back in the resource list pointed to by head
  */
-void cpqhp_destroy_resource_list (struct resource_lists * resources)
+void cpqhp_destroy_resource_list (struct resource_lists *resources)
 {
 	struct pci_resource *res, *tres;
 
@@ -1516,7 +1522,7 @@
  *
  * Puts node back in the resource list pointed to by head
  */
-void cpqhp_destroy_board_resources (struct pci_func * func)
+void cpqhp_destroy_board_resources (struct pci_func *func)
 {
 	struct pci_resource *res, *tres;
 
@@ -1556,4 +1562,3 @@
 		kfree(tres);
 	}
 }
-