diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 824486e28837..2a5f93415983 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -169,16 +169,21 @@ static void pdev_sort_resources(struct pci_dev *dev, struct list_head *head)
 		resource_size_t r_align;
 		struct list_head *n;
 
-		if (r->flags & IORESOURCE_PCI_FIXED)
+		if (r->flags & IORESOURCE_PCI_FIXED) {
+			pci_info(dev, "tudor: %s: %s %pR resource skipped due to IORESOURCE_PCI_FIXED\n", __func__, r_name, r);
 			continue;
+		}
 
-		if (!(r->flags) || r->parent)
+		if (!(r->flags) || r->parent) {
+			pci_info(dev, "tudor: %s: %s %pR resource skipped due to !(r->flags) || r->parent\n", __func__, r_name, r);
 			continue;
+		}
 
 		r_align = pci_resource_alignment(dev, r);
 		if (!r_align) {
 			pci_warn(dev, "%s %pR: alignment must not be zero\n",
 				 r_name, r);
+			pci_info(dev, "tudor: %s: %s %pR resource skipped due to zero alignment\n", __func__, r_name, r);
 			continue;
 		}
 
@@ -206,6 +211,8 @@ static void pdev_sort_resources(struct pci_dev *dev, struct list_head *head)
 		}
 		/* Insert it just before n */
 		list_add_tail(&tmp->list, n);
+
+		pci_info(dev, "tudor: %s: %s %pR resource added in head list\n", __func__, r_name, r);
 	}
 }
 
@@ -256,14 +263,18 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
 		res = add_res->res;
 		dev = add_res->dev;
 		idx = pci_resource_num(dev, res);
+		res_name = pci_resource_name(dev, idx);
 
 		/*
 		 * Skip resource that failed the earlier assignment and is
 		 * not optional as it would just fail again.
 		 */
 		if (!res->parent && resource_size(res) &&
-		    !pci_resource_is_optional(dev, idx))
+		    !pci_resource_is_optional(dev, idx)) {
+			pci_info(dev, "tudor: %s: %s %pR: skipped resource that failed the earlier assignment and is not optional as it would just fail again\n",
+				 __func__, res_name, res);
 			goto out;
+		}
 
 		/* Skip this resource if not found in head list */
 		list_for_each_entry(dev_res, head, list) {
@@ -272,12 +283,15 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
 				break;
 			}
 		}
-		if (!found_match) /* Just skip */
+		if (!found_match) { /* Just skip */
+			pci_info(dev, "tudor: %s: %s %pR: skipped resource not found in head list\n",
+				 __func__, res_name, res);
 			continue;
+		}
 
-		res_name = pci_resource_name(dev, idx);
 		add_size = add_res->add_size;
 		align = add_res->min_align;
+
 		if (!res->parent) {
 			resource_set_range(res, align,
 					   resource_size(res) + add_size);
@@ -286,6 +300,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
 					"%s %pR: ignoring failure in optional allocation\n",
 					res_name, res);
 			}
+			pci_info(dev, "tudor: %s: %s %pR: resource assigned\n", __func__, res_name, res);
 		} else if (add_size > 0) {
 			res->flags |= add_res->flags &
 				 (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN);
@@ -293,6 +308,9 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
 				pci_info(dev, "%s %pR: failed to add optional %llx\n",
 					 res_name, res,
 					 (unsigned long long) add_size);
+			pci_info(dev, "tudor: %s: %s %pR: resource reassigned\n", __func__, res_name, res);
+		} else {
+			pci_info(dev, "tudor: %s: %s %pR: resource reassigned add_size zero or negative\n", __func__, res_name, res);
 		}
 out:
 		list_del(&add_res->list);
@@ -318,6 +336,7 @@ static void assign_requested_resources_sorted(struct list_head *head,
 	struct pci_dev_resource *dev_res;
 	struct resource *res;
 	struct pci_dev *dev;
+	const char *res_name;
 	bool optional_res;
 	int idx;
 
@@ -325,6 +344,7 @@ static void assign_requested_resources_sorted(struct list_head *head,
 		res = dev_res->res;
 		dev = dev_res->dev;
 		idx = pci_resource_num(dev, res);
+		res_name = pci_resource_name(dev, idx);
 		optional_res = pci_resource_is_optional(dev, idx);
 
 		if (!resource_size(res))
@@ -335,6 +355,8 @@ static void assign_requested_resources_sorted(struct list_head *head,
 
 		if (pci_assign_resource(dev, idx)) {
 			if (fail_head) {
+				pci_info(dev, "tudor: %s: %s %pR: add res to fail_head list\n",
+					 __func__, res_name, res);
 				add_to_list(fail_head, dev, res,
 					    0 /* don't care */,
 					    0 /* don't care */);
@@ -1198,11 +1220,17 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
 				continue;
 			r_size = resource_size(r);
 
+			pci_info(dev, "tudor: 1: %s: %s %pR list empty? %d, r->flags = 0x%lx, type = 0x%lx, type2 = 0x%lx, type3 = 0x%lx, mask = 0x%lx\n",
+				 __func__, r_name, r, list_empty(realloc_head),
+				 r->flags, type, type2, type3, mask);
+
 			/* Put SRIOV requested res to the optional list */
 			if (realloc_head && pci_resource_is_optional(dev, i)) {
 				add_align = max(pci_resource_alignment(dev, r), add_align);
 				add_to_list(realloc_head, dev, r, 0, 0 /* Don't care */);
 				children_add_size += r_size;
+				pci_info(dev, "tudor: 2: %s: %s %pR list empty? %d\n",
+					 __func__, r_name, r, list_empty(realloc_head));
 				continue;
 			}
 
@@ -2497,7 +2525,11 @@ void pci_assign_unassigned_bus_resources(struct pci_bus *bus)
 		if (pci_has_subordinate(dev))
 			__pci_bus_size_bridges(dev->subordinate, &add_list);
 	up_read(&pci_bus_sem);
+	pr_err("tudor : %s: before __pci_bus_assign_resources -> list empty? %d\n",
+	       __func__, list_empty(&add_list));
 	__pci_bus_assign_resources(bus, &add_list, NULL);
+	pr_err("tudor : %s: after __pci_bus_assign_resources -> list empty? %d\n",
+	       __func__, list_empty(&add_list));
 	BUG_ON(!list_empty(&add_list));
 }
 EXPORT_SYMBOL_GPL(pci_assign_unassigned_bus_resources);
-- 
2.49.0.1204.g71687c7c1d-goog