On Thu, Oct 01, 2020 at 10:33:26AM +0100, Daniel Scally wrote: ... > This patch is dependent on another (which implements the software node graph > family of functions): > > https://lore.kernel.org/linux-media/20200915232827.3416-1-djrscally@xxxxxxxxx/ More thoughts about the (future) series. Can you rather do a series of patches to understand what is going on here. I see something like this: patch 1. Add unregister_nodes_reverse() 2. Use above in test_printf.c 3. Add that graph support patch 4. Add T: to MAINTAINERS for IPU3-CIO2 5. Add this patch -- With Best Regards, Andy Shevchenko