__assign_resources_sorted() is getting too big if we put alt_size support
into it.  Split out required+optional assigning code to another function.

Signed-off-by: Yinghai Lu <ying...@kernel.org>
---
 drivers/pci/setup-bus.c | 47 +++++++++++++++++++++++++++--------------------
 1 file changed, 27 insertions(+), 20 deletions(-)

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 09844d9..c49bfde 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -473,20 +473,9 @@ static void restore_resource(struct pci_dev_resource 
*save_res,
        res->flags = save_res->flags;
 }
 
-static void __assign_resources_sorted(struct list_head *head,
-                                struct list_head *realloc_head,
-                                struct list_head *fail_head)
+static bool __assign_resources_required_optional_sorted(struct list_head *head,
+                                struct list_head *realloc_head)
 {
-       /*
-        * Should not assign requested resources at first.
-        *   they could be adjacent, so later reassign can not reallocate
-        *   them one by one in parent resource window.
-        * Try to assign requested + add_size at beginning
-        *  if could do that, could get out early.
-        *  if could not do that, we still try to assign requested at first,
-        *    then try to reassign add_size for some resources.
-        */
-
        LIST_HEAD(save_head);
        LIST_HEAD(local_fail_head);
        struct pci_dev_resource *save_res;
@@ -495,12 +484,8 @@ static void __assign_resources_sorted(struct list_head 
*head,
        resource_size_t add_align;
        struct resource *res;
 
-       /* Check if optional add_size is there */
-       if (!realloc_head || list_empty(realloc_head))
-               goto requested_and_reassign;
-
        if (!save_resources(head, &save_head))
-               goto requested_and_reassign;
+               return false;
 
        /* Update res in head list with add_size in realloc_head list */
        list_for_each_entry(dev_res, head, list) {
@@ -539,7 +524,8 @@ static void __assign_resources_sorted(struct list_head 
*head,
                        remove_from_list(realloc_head, dev_res->res);
                free_list(&save_head);
                free_list(head);
-               return;
+
+               return true;
        }
 
        /* check failed type */
@@ -574,7 +560,28 @@ static void __assign_resources_sorted(struct list_head 
*head,
 
        free_list(&save_head);
 
-requested_and_reassign:
+       return false;
+}
+
+static void __assign_resources_sorted(struct list_head *head,
+                                struct list_head *realloc_head,
+                                struct list_head *fail_head)
+{
+       /*
+        * Should not assign required resources at first.
+        *   they could be adjacent, so later reassign can not reallocate
+        *   them one by one in parent resource window.
+        * Try to assign required + optional at beginning
+        *  if could do that, could get out early.
+        *  if could not do that, we still try to assign required at first,
+        *    then try to reassign add_size for some resources.
+        */
+
+       /* Check required+optional add */
+       if (realloc_head && !list_empty(realloc_head) &&
+           __assign_resources_required_optional_sorted(head, realloc_head))
+               return;
+
        sort_resources(head);
 
        /* Satisfy the must-have resource requests */
-- 
1.8.4.5

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