of: add helper function to retrive match data
It's a common operation for device drivers to retrive the data
member from of_device_id struct in their probe function.
Most driver end up doing:
const struct of_device_id *match;
match = of_match_device(driver_of_match, &pdev->dev);
driver->data = match->data;
With the of_device_get_match_data helper function all this can
done in one go.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
[robh: add missing inline to dummmy declaration]
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index 22801b1..4c50854 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -33,6 +33,8 @@
extern int of_device_register(struct platform_device *ofdev);
extern void of_device_unregister(struct platform_device *ofdev);
+extern const void *of_device_get_match_data(const struct device *dev);
+
extern ssize_t of_device_get_modalias(struct device *dev,
char *str, ssize_t len);
@@ -65,6 +67,11 @@
static inline void of_device_uevent(struct device *dev,
struct kobj_uevent_env *env) { }
+static inline const void *of_device_get_match_data(const struct device *dev)
+{
+ return NULL;
+}
+
static inline int of_device_get_modalias(struct device *dev,
char *str, ssize_t len)
{