1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index d9099b15b472..115c610324d1 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -53,6 +53,12 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
 #define ACPI_COMPANION_SET(dev, adev)   ACPI_COMPANION(dev) = (adev)
 #define ACPI_HANDLE(dev)                acpi_device_handle(ACPI_COMPANION(dev))
 
+static inline void acpi_preset_companion(struct device *dev,
+                                         struct acpi_device *parent, u64 addr)
+{
+        ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, NULL));
+}
+
 static inline const char *acpi_dev_name(struct acpi_device *adev)
 {
         return dev_name(&adev->dev);