diff options
| -rw-r--r-- | drivers/pci/pci.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index ed9447aee863..b5b83331da26 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5049,6 +5049,15 @@ void pci_reassigndev_resource_alignment(struct pci_dev *dev) resource_size_t align, size; u16 command; + /* + * VF BARs are read-only zero according to SR-IOV spec r1.1, sec + * 3.4.1.11. Their resources are allocated from the space + * described by the VF BARx register in the PF's SR-IOV capability. + * We can't influence their alignment here. + */ + if (dev->is_virtfn) + return; + /* check if specified PCI is target device to reassign */ align = pci_specified_resource_alignment(dev); if (!align) |