Paste
Of Code

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 138d5337a1d8..18ca23334bc8 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -206,6 +206,8 @@ 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_na
me, r);
        }
 }
 
@@ -255,10 +257,15 @@ 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 has been reset */
-               if (!res->flags)
+               if (!res->flags) {
+                       pci_info(dev, "tudor: %s: %s %pR: skipped resource that has been reset\
n",
+                                __func__, res_name, res);
                        goto out;
+               }
 
                /* Skip this resource if not found in head list */
                list_for_each_entry(dev_res, head, list) {
@@ -267,13 +274,15 @@ 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;
+               }
 
-               idx = pci_resource_num(dev, res);
-               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, add_size);
                        if (pci_assign_resource(dev, idx)) {
@@ -282,6 +291,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
                                        res_name, res);
                                reset_resource(res);
                        }
+                       pci_info(dev, "tudor: %s: %s %pR: resource assigned\n", __func__, res_name, res);
                } else {
                        res->flags |= add_res->flags &
                                 (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN);
@@ -289,7 +299,9 @@ 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);
                }
+
 out:
                list_del(&add_res->list);
                kfree(add_res);
@@ -1146,12 +1158,17 @@ 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\n",
+                                __func__, r_name, r, list_empty(realloc_head));
+
                        /* Put SRIOV requested res to the optional list */
                        if (realloc_head && pci_resource_is_iov(i)) {
                                add_align = max(pci_resource_alignment(dev, r), add_align);
                                resource_set_size(r, 0);
                                add_to_list(realloc_head, dev, r, r_size, 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;
                        }
 
@@ -2446,7 +2463,11 @@ 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);