[PATCH v3 1/7] ACPI: Add acpi_device_clear_dep() helper function

[Lorenzo Pieralisi]

Code clearing device dependencies in ACPI in drivers through

acpi_dev_clear_dependencies()

requires annoying ifdeffery to make sure it is compiled out on
!CONFIG_ACPI configurations.

Implement a wrapper function to clear device dependencies that can be used
in device drivers without conditional compilation.

Signed-off-by: Lorenzo Pieralisi <lpieralisi at kernel.org>
Cc: "Rafael J. Wysocki" <rafael at kernel.org>
---
 include/linux/acpi.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 10d6c6c11bdf..4f950f5386d7 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -94,6 +94,12 @@ static inline void acpi_preset_companion(struct device *dev,
 	ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, false));
 }
 
+static inline void acpi_device_clear_dep(struct device *dev)
+{
+	if (has_acpi_companion(dev))
+		acpi_dev_clear_dependencies(ACPI_COMPANION(dev));
+}
+
 static inline const char *acpi_dev_name(struct acpi_device *adev)
 {
 	return dev_name(&adev->dev);
@@ -908,6 +914,8 @@ static inline void acpi_preset_companion(struct device *dev,
 {
 }
 
+static inline void acpi_device_clear_dep(struct device *dev) {}
+
 static inline const char *acpi_dev_name(struct acpi_device *adev)
 {
 	return NULL;

-- 
2.34.1