In several drivers devices use the ACPI companion of the parent.
Add a helper for this use case to avoid code duplication.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
include/linux/acpi.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ba3f601b6..89efb1658 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1541,4 +1541,9 @@ static inline void acpi_device_notify(struct device *dev) { }
static inline void acpi_device_notify_remove(struct device *dev) { }
#endif
+static inline void acpi_use_parent_companion(struct device *dev)
+{
+ ACPI_COMPANION_SET(dev, ACPI_COMPANION(dev->parent));
+}
+
#endif /*_LINUX_ACPI_H*/
--
2.42.0
