> >> + /* Use 32-bit value, since practically there is no need in 64 bits */ > >> + *val = (u32)readings[ch->scan_index].value; > > We should check it fits and if doesn't return an error rather than pretending all was fine. > > > What kind of error to return in the case it does not fit - ENOEXEC (Exec format error) ? That one is a bit obscure. I'd go with either -ERANGE I think as we are reflecting that the clamp to 32 bit is not representable.
