diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index e2575f86133..6f62a499023 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1349,5 +1349,19 @@ static inline bool pci_is_pcie(struct pci_dev *dev) void pci_request_acs(void); + +#define PCI_VPD_LRDT_TAG_SIZE 3 + +/** + * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length + * @lrdt: Pointer to the beginning of the Large Resource Data Type tag + * + * Returns the extracted Large Resource Data Type length. + */ +static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) +{ + return (u16)lrdt[1] + ((u16)lrdt[2] << 8); +} + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ |