Hi, > You should change the type of 'grp' not add a cast. > The compiler can warn about casts removing 'const' as well. > > David Thanks for the comment, I just found that this issue has been fixed [1] Miles [1] https://lore.kernel.org/lkml/DM6PR11MB3660804C821D7CA7329B6CAFC45F9@DM6PR11MB3660.namprd11.prod.outlook.com/