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PCI: Don't assign or reassign immutable resources

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IORESOURCE_PCI_FIXED means the resource can't be moved, so if it's set,
don't bother trying to assign or reassign the resource.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2016-03-01 10:58:04 -06:00
parent 63e22924f5
commit 2ea4adf752
1 changed files with 6 additions and 0 deletions
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6
drivers/pci/setup-res.c
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@ -276,6 +276,9 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
resource_size_t align, size;
int ret;
if (res->flags & IORESOURCE_PCI_FIXED)
return 0;
res->flags |= IORESOURCE_UNSET;
align = pci_resource_alignment(dev, res);
if (!align) {
@ -321,6 +324,9 @@ int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsiz
resource_size_t new_size;
int ret;
if (res->flags & IORESOURCE_PCI_FIXED)
return 0;
flags = res->flags;
res->flags |= IORESOURCE_UNSET;
if (!res->parent) {