summaryrefslogtreecommitdiff
path: root/drivers/pci/setup-bus.c
diff options
context:
space:
mode:
authorYinghai Lu <yinghai@kernel.org>2012-01-21 02:08:25 -0800
committerJesse Barnes <jbarnes@virtuousgeek.org>2012-02-14 08:44:54 -0800
commit78c3b329b9dd7097781cb900146e503e499cccfe (patch)
tree0e7648baae8ac6f17b34108f5793aa1e3d4f23f8 /drivers/pci/setup-bus.c
parent19aa7ee432cec00b647443719eb5c055b69a5e8e (diff)
PCI: Move pdev_sort_resources() to setup-bus.c
This allows us to move the definition of struct resource_list to setup_bus.c and later convert resource_list to a regular list. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/setup-bus.c')
-rw-r--r--drivers/pci/setup-bus.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index c79ce4ee634b..f233d127ca89 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -137,6 +137,52 @@ static resource_size_t get_res_add_size(struct resource_list_x *realloc_head,
return 0;
}
+/* Sort resources by alignment */
+static void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
+{
+ int i;
+
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ struct resource *r;
+ struct resource_list *list, *tmp;
+ resource_size_t r_align;
+
+ r = &dev->resource[i];
+
+ if (r->flags & IORESOURCE_PCI_FIXED)
+ continue;
+
+ if (!(r->flags) || r->parent)
+ continue;
+
+ r_align = pci_resource_alignment(dev, r);
+ if (!r_align) {
+ dev_warn(&dev->dev, "BAR %d: %pR has bogus alignment\n",
+ i, r);
+ continue;
+ }
+ for (list = head; ; list = list->next) {
+ resource_size_t align = 0;
+ struct resource_list *ln = list->next;
+
+ if (ln)
+ align = pci_resource_alignment(ln->dev, ln->res);
+
+ if (r_align > align) {
+ tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
+ if (!tmp)
+ panic("pdev_sort_resources(): "
+ "kmalloc() failed!\n");
+ tmp->next = ln;
+ tmp->res = r;
+ tmp->dev = dev;
+ list->next = tmp;
+ break;
+ }
+ }
+ }
+}
+
static void __dev_sort_resources(struct pci_dev *dev,
struct resource_list *head)
{