diff options
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index d2e36bbecb42..04cfc60f7860 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1003,7 +1003,12 @@ void set_pcie_port_type(struct pci_dev *pdev) else if (type == PCI_EXP_TYPE_UPSTREAM || type == PCI_EXP_TYPE_DOWNSTREAM) { parent = pci_upstream_bridge(pdev); - if (!parent->has_secondary_link) + + /* + * Usually there's an upstream device (Root Port or Switch + * Downstream Port), but we can't assume one exists. + */ + if (parent && !parent->has_secondary_link) pdev->has_secondary_link = 1; } } @@ -1109,7 +1114,7 @@ int pci_cfg_space_size(struct pci_dev *dev) #define LEGACY_IO_RESOURCE (IORESOURCE_IO | IORESOURCE_PCI_FIXED) -static void pci_msi_setup_pci_dev(struct pci_dev *dev) +void pci_msi_setup_pci_dev(struct pci_dev *dev) { /* * Disable the MSI hardware to avoid screaming interrupts |
