Fix pci_claim_resource
Instead of starting from the iomem or ioport roots, start from the
parent bus' resources. This fixes a bug where child resources would
appear above their parents resources if they had the same size.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 3039fcb..1240351 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -99,11 +99,11 @@
int pci_claim_resource(struct pci_dev *dev, int resource)
{
struct resource *res = &dev->resource[resource];
- struct resource *root = NULL;
+ struct resource *root;
char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
int err;
- root = pcibios_select_root(dev, res);
+ root = pci_find_parent_resource(dev, res);
err = -EINVAL;
if (root != NULL)