On Fri, May 21, 2021 at 05:44:07PM +0000, Luis Chamberlain wrote: > Its not obvious to me why using this new API requires you then to > set minors explicitly to 1, and yet here underneath we see the minors > argument passed is 0. > > Nor is it clear from the documentation. Basically for all new drivers no one should set minors at all, and the dynamic dev_t mechanism does all the work. For converted old drivers minors is set manually instead of being passed an an argument that should be 0 for all new drivers.