This helper function simplifies the code by not needing a union
v4l2_ctrl_ptr and an assignment every time we need to use
a ctrl_ptr.
Suggested-by: Hans Verkuil <hverkuil@xxxxxxxxx>
Signed-off-by: Ricardo Ribalda Delgado <ribalda@xxxxxxxxxx>
---
include/media/v4l2-ctrls.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index c42f164e2c9e..d69cfdffd41d 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -73,6 +73,17 @@ union v4l2_ctrl_ptr {
void *p;
};
+/**
+ * v4l2_ctrl_ptr() - Helper function to return a v4l2_ctrl_ptr from a
+ * void pointer
+ * @ptr: The void pointer
+ */
+static inline union v4l2_ctrl_ptr v4l2_ctrl_ptr_from_void(void *ptr)
+{
+ BUILD_BUG_ON(sizeof(union v4l2_ctrl_ptr) != sizeof(void *));
+ return (union v4l2_ctrl_ptr) ptr;
+}
+
/**
* struct v4l2_ctrl_ops - The control operations that the driver has to provide.
*
--
2.23.0
