diff options
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 46 |
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) { |