---

yaml
---
r: 166391
b: refs/heads/master
c: b1fbfb2
h: refs/heads/master
i:
  166389: 5388cef
  166387: 5af43ee
  166383: d6cffc8
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ea8d82fd316208bd0ffe6f64823d04bcb8c57158
+refs/heads/master: b1fbfb2ae8f2f0e04219218da6f52f7313466899

trunk/drivers/acpi/scan.c

@@ -1155,6 +1155,16 @@ static void acpi_device_set_id(struct acpi_device *device)
 		break;
 	}
 
+	/*
+	 * We build acpi_devices for some objects that don't have _HID or _CID,
+	 * e.g., PCI bridges and slots.  Drivers can't bind to these objects,
+	 * but we do use them indirectly by traversing the acpi_device tree.
+	 * This generic ID isn't useful for driver binding, but it provides
+	 * the useful property that "every acpi_device has an ID."
+	 */
+	if (!hid && !cid_list && !cid_add)
+		hid = "device";
+
 	if (hid) {
 		device->pnp.hardware_id = ACPI_ALLOCATE_ZEROED(strlen (hid) + 1);
 		if (device->pnp.hardware_id) {