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-rw-r--r--src/device/device_const.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/device/device_const.c b/src/device/device_const.c
index c1b0b063ff..f2f0177f57 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -234,6 +234,18 @@ DEVTREE_CONST struct device *pcidev_on_root(uint8_t dev, uint8_t fn)
return pcidev_path_on_root(PCI_DEVFN(dev, fn));
}
+DEVTREE_CONST struct device *pcidev_path_on_root_debug(pci_devfn_t devfn, const char *func)
+{
+ DEVTREE_CONST struct device *dev = pcidev_path_on_root(devfn);
+ if (dev)
+ return dev;
+
+ printk(BIOS_ERR, "BUG: %s requests hidden 00:%02x.%u\n", func, devfn >> 3, devfn & 7);
+
+ /* FIXME: This can return wrong device. */
+ return dev_find_slot(0, devfn);
+}
+
/**
* Given an SMBus bus and a device number, find the device structure.
*