diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/setup-bus.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 742055908656..f2461bf9243d 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1842,16 +1842,24 @@ static void adjust_bridge_window(struct pci_dev *bridge, struct resource *res, struct list_head *add_list, resource_size_t new_size) { - resource_size_t add_size; + resource_size_t add_size, size = resource_size(res); if (res->parent) return; - if (resource_size(res) >= new_size) + if (!new_size) return; - add_size = new_size - resource_size(res); - pci_dbg(bridge, "bridge window %pR extended by %pa\n", res, &add_size); + if (new_size > size) { + add_size = new_size - size; + pci_dbg(bridge, "bridge window %pR extended by %pa\n", res, + &add_size); + } else if (new_size < size) { + add_size = size - new_size; + pci_dbg(bridge, "bridge window %pR shrunken by %pa\n", res, + &add_size); + } + res->end = res->start + new_size - 1; remove_from_list(add_list, res); } |