diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index c587034..825d604 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -323,6 +323,7 @@ struct pci_dev { unsigned int is_added:1; unsigned int is_busmaster:1; /* device is busmaster */ unsigned int no_msi:1; /* device may not use msi */ + unsigned int no_64bit_msi:1; /* device may only use 32-bit MSIs */ unsigned int block_cfg_access:1; /* config space access is blocked */ unsigned int broken_parity_status:1; /* Device generates false positive parity */ unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ @@ -478,6 +479,15 @@ static inline bool pci_is_root_bus(struct pci_bus *pbus) return !(pbus->parent); } +static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) +{ + dev = pci_physfn(dev); + if (pci_is_root_bus(dev->bus)) + return NULL; + + return dev->bus->self; +} + #ifdef CONFIG_PCI_MSI static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { |