--- zzzz-none-000/linux-3.10.107/drivers/pci/hotplug/cpci_hotplug_pci.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/pci/hotplug/cpci_hotplug_pci.c	2021-02-04 17:41:59.000000000 +0000
@@ -39,14 +39,14 @@
 	do {							\
 		if (cpci_debug)					\
 			printk (KERN_DEBUG "%s: " format "\n",	\
-				MY_NAME , ## arg); 		\
+				MY_NAME , ## arg);		\
 	} while (0)
 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
 #define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
 
 
-u8 cpci_get_attention_status(struct slot* slot)
+u8 cpci_get_attention_status(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -66,7 +66,7 @@
 	return hs_csr & 0x0008 ? 1 : 0;
 }
 
-int cpci_set_attention_status(struct slot* slot, int status)
+int cpci_set_attention_status(struct slot *slot, int status)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -93,7 +93,7 @@
 	return 1;
 }
 
-u16 cpci_get_hs_csr(struct slot* slot)
+u16 cpci_get_hs_csr(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -111,7 +111,7 @@
 	return hs_csr;
 }
 
-int cpci_check_and_clear_ins(struct slot* slot)
+int cpci_check_and_clear_ins(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -140,7 +140,7 @@
 	return ins;
 }
 
-int cpci_check_ext(struct slot* slot)
+int cpci_check_ext(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -161,7 +161,7 @@
 	return ext;
 }
 
-int cpci_clear_ext(struct slot* slot)
+int cpci_clear_ext(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -187,7 +187,7 @@
 	return 0;
 }
 
-int cpci_led_on(struct slot* slot)
+int cpci_led_on(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -216,7 +216,7 @@
 	return 0;
 }
 
-int cpci_led_off(struct slot* slot)
+int cpci_led_off(struct slot *slot)
 {
 	int hs_cap;
 	u16 hs_csr;
@@ -250,13 +250,16 @@
  * Device configuration functions
  */
 
-int __ref cpci_configure_slot(struct slot *slot)
+int cpci_configure_slot(struct slot *slot)
 {
 	struct pci_dev *dev;
 	struct pci_bus *parent;
+	int ret = 0;
 
 	dbg("%s - enter", __func__);
 
+	pci_lock_rescan_remove();
+
 	if (slot->dev == NULL) {
 		dbg("pci_dev null, finding %02x:%02x:%x",
 		    slot->bus->number, PCI_SLOT(slot->devfn), PCI_FUNC(slot->devfn));
@@ -277,28 +280,31 @@
 		slot->dev = pci_get_slot(slot->bus, slot->devfn);
 		if (slot->dev == NULL) {
 			err("Could not find PCI device for slot %02x", slot->number);
-			return -ENODEV;
+			ret = -ENODEV;
+			goto out;
 		}
 	}
 	parent = slot->dev->bus;
 
-	list_for_each_entry(dev, &parent->devices, bus_list)
+	list_for_each_entry(dev, &parent->devices, bus_list) {
 		if (PCI_SLOT(dev->devfn) != PCI_SLOT(slot->devfn))
 			continue;
-		if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
-		    (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS))
+		if (pci_is_bridge(dev))
 			pci_hp_add_bridge(dev);
+	}
 
 
 	pci_assign_unassigned_bridge_resources(parent->self);
 
 	pci_bus_add_devices(parent);
 
+ out:
+	pci_unlock_rescan_remove();
 	dbg("%s - exit", __func__);
-	return 0;
+	return ret;
 }
 
-int cpci_unconfigure_slot(struct slot* slot)
+int cpci_unconfigure_slot(struct slot *slot)
 {
 	struct pci_dev *dev, *temp;
 
@@ -308,6 +314,8 @@
 		return -ENODEV;
 	}
 
+	pci_lock_rescan_remove();
+
 	list_for_each_entry_safe(dev, temp, &slot->bus->devices, bus_list) {
 		if (PCI_SLOT(dev->devfn) != PCI_SLOT(slot->devfn))
 			continue;
@@ -318,6 +326,8 @@
 	pci_dev_put(slot->dev);
 	slot->dev = NULL;
 
+	pci_unlock_rescan_remove();
+
 	dbg("%s - exit", __func__);
 	return 0;
 }