[PATCH v4 1/3] driver core: Provide device_match_acpi_handle() helper

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

We have a couple of users of this helper, make it available for them.

The prototype for the helper is specifically crafted in order to be
easily used with bus_find_device() call. That's why its location is
in the driver core rather than ACPI.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
v4: amended changelog to clarify implementation details (Rafael)
 drivers/base/core.c        | 6 ++++++
 include/linux/device/bus.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index b67ebe6a323c..fd034d742447 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -4838,6 +4838,12 @@ int device_match_acpi_dev(struct device *dev, const void *adev)
 }
 EXPORT_SYMBOL(device_match_acpi_dev);
 
+int device_match_acpi_handle(struct device *dev, const void *handle)
+{
+	return ACPI_HANDLE(dev) == handle;
+}
+EXPORT_SYMBOL(device_match_acpi_handle);
+
 int device_match_any(struct device *dev, const void *unused)
 {
 	return 1;
diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index 062777a45a74..a039ab809753 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h
@@ -143,6 +143,7 @@ int device_match_of_node(struct device *dev, const void *np);
 int device_match_fwnode(struct device *dev, const void *fwnode);
 int device_match_devt(struct device *dev, const void *pdevt);
 int device_match_acpi_dev(struct device *dev, const void *adev);
+int device_match_acpi_handle(struct device *dev, const void *handle);
 int device_match_any(struct device *dev, const void *unused);
 
 /* iterator helpers for buses */
-- 
2.33.0