diff options
Diffstat (limited to 'src/device/pci_device.c')
| -rw-r--r-- | src/device/pci_device.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/device/pci_device.c b/src/device/pci_device.c index 86c72b89ff..fbe9d9691b 100644 --- a/src/device/pci_device.c +++ b/src/device/pci_device.c @@ -734,8 +734,13 @@ void pci_bus_reset(struct bus *bus) void pci_dev_set_subsystem(struct device *dev, unsigned int vendor, unsigned int device) { - pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, - ((device & 0xffff) << 16) | (vendor & 0xffff)); + if (!vendor || !device) { + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + pci_read_config32(dev, PCI_VENDOR_ID)); + } else { + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + ((device & 0xffff) << 16) | (vendor & 0xffff)); + } } static int should_run_oprom(struct device *dev) |