1 files changed, 19 insertions, 12 deletions

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index fb0d344..49e0323 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -34,6 +34,7 @@ struct resource_list_x {
 	resource_size_t start;
 	resource_size_t end;
 	resource_size_t add_size;
+	resource_size_t min_align;
 	unsigned long flags;
 };
 
@@ -65,7 +66,7 @@ void pci_realloc(void)
  */
 static void add_to_list(struct resource_list_x *head,
 		 struct pci_dev *dev, struct resource *res,
-		 resource_size_t add_size)
+		 resource_size_t add_size, resource_size_t min_align)
 {
 	struct resource_list_x *list = head;
 	struct resource_list_x *ln = list->next;
@@ -84,13 +85,16 @@ static void add_to_list(struct resource_list_x *head,
 	tmp->end = res->end;
 	tmp->flags = res->flags;
 	tmp->add_size = add_size;
+	tmp->min_align = min_align;
 	list->next = tmp;
 }
 
 static void add_to_failed_list(struct resource_list_x *head,
 				struct pci_dev *dev, struct resource *res)
 {
-	add_to_list(head, dev, res, 0);
+	add_to_list(head, dev, res,
+			0 /* dont care */,
+			0 /* dont care */);
 }
 
 static void __dev_sort_resources(struct pci_dev *dev,
@@ -159,13 +163,16 @@ static void adjust_resources_sorted(struct resource_list_x *add_head,
 
 		idx = res - &list->dev->resource[0];
 		add_size=list->add_size;
-		if (!resource_size(res) && add_size) {
-			 res->end = res->start + add_size - 1;
-			 if(pci_assign_resource(list->dev, idx))
+		if (!resource_size(res)) {
+			res->end = res->start + add_size - 1;
+			if(pci_assign_resource(list->dev, idx))
 				reset_resource(res);
-		} else if (add_size) {
-			adjust_resource(res, res->start,
-				resource_size(res) + add_size);
+		} else {
+			resource_size_t align = list->min_align;
+			res->flags |= list->flags & (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN);
+			if (pci_reassign_resource(list->dev, idx, add_size, align))
+				dev_printk(KERN_DEBUG, &list->dev->dev, "failed to add optional resources res=%pR\n",
+							res);
 		}
 out:
 		tmp = list;
@@ -607,7 +614,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
 	if (children_add_size > add_size)
 		add_size = children_add_size;
 	size1 = (!add_head || (add_head && !add_size)) ? size0 :
-		calculate_iosize(size, min_size+add_size, size1,
+		calculate_iosize(size, min_size, add_size + size1,
 			resource_size(b_res), 4096);
 	if (!size0 && !size1) {
 		if (b_res->start || b_res->end)
@@ -622,7 +629,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
 	b_res->end = b_res->start + size0 - 1;
 	b_res->flags |= IORESOURCE_STARTALIGN;
 	if (size1 > size0 && add_head)
-		add_to_list(add_head, bus->self, b_res, size1-size0);
+		add_to_list(add_head, bus->self, b_res, size1-size0, 4096);
 }
 
 /**
@@ -711,7 +718,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
 	if (children_add_size > add_size)
 		add_size = children_add_size;
 	size1 = (!add_head || (add_head && !add_size)) ? size0 :
-		calculate_memsize(size, min_size+add_size, 0,
+		calculate_memsize(size, min_size, add_size,
 				resource_size(b_res), min_align);
 	if (!size0 && !size1) {
 		if (b_res->start || b_res->end)
@@ -725,7 +732,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
 	b_res->end = size0 + min_align - 1;
 	b_res->flags |= IORESOURCE_STARTALIGN | mem64_mask;
 	if (size1 > size0 && add_head)
-		add_to_list(add_head, bus->self, b_res, size1-size0);
+		add_to_list(add_head, bus->self, b_res, size1-size0, min_align);
 	return 1;
 }