On Di, 2019-03-26 at 21:03 +0100, Nicolas Saenz Julienne wrote: > --- a/drivers/hid/hid-core.c > +++ b/drivers/hid/hid-core.c > @@ -218,13 +218,14 @@ static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type) > * Add a usage to the temporary parser table. > */ > > -static int hid_add_usage(struct hid_parser *parser, unsigned usage) > +static int hid_add_usage(struct hid_parser *parser, unsigned usage, __u8 size) No need to use the __u8 style inside the kernel. u8 will do. Regards Oliver