diff options
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 6d7ab9b..ead1ac1 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1803,6 +1803,13 @@ static int only_one_child(struct pci_bus *bus) return 0; if (pci_pcie_type(parent) == PCI_EXP_TYPE_ROOT_PORT) return 1; + + /* + * PCIe downstream ports are bridges that normally lead to only a + * device 0, but if PCI_SCAN_ALL_PCIE_DEVS is set, scan all + * possible devices, not just device 0. See PCIe spec r3.0, + * sec 7.3.1. + */ if (parent->has_secondary_link && !pci_has_flag(PCI_SCAN_ALL_PCIE_DEVS)) return 1; |