size_t count)
{
struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
+ struct pci_dev *vpd_dev = dev;
+ ssize_t ret;
+
+ if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
+ vpd_dev = pci_get_func0_dev(dev);
+ if (!vpd_dev)
+ return -ENODEV;
+ }
+
+ pci_config_pm_runtime_get(vpd_dev);
+ ret = pci_read_vpd(vpd_dev, off, count, buf);
+ pci_config_pm_runtime_put(vpd_dev);
+
+ if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0)
+ pci_dev_put(vpd_dev);
- return pci_read_vpd(dev, off, count, buf);
+ return ret;
}
static ssize_t vpd_write(struct file *filp, struct kobject *kobj,
size_t count)
{
struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
+ struct pci_dev *vpd_dev = dev;
+ ssize_t ret;
+
+ if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
+ vpd_dev = pci_get_func0_dev(dev);
+ if (!vpd_dev)
+ return -ENODEV;
+ }
+
+ pci_config_pm_runtime_get(vpd_dev);
+ ret = pci_write_vpd(vpd_dev, off, count, buf);
+ pci_config_pm_runtime_put(vpd_dev);
+
+ if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0)
+ pci_dev_put(vpd_dev);
- return pci_write_vpd(dev, off, count, buf);
+ return ret;
}
static BIN_ATTR(vpd, 0600, vpd_read, vpd_write, 0);