Re: [RFC][PATCH 1/2] time: Fix problematic change in settimeofday error checking

[Dima Stepanov]

> @@ -21,6 +21,9 @@ static inline int do_sys_settimeofday(const struct timespec 
> *tv,
>         struct timespec64 ts64;
>
>         if (!tv)
> +               return do_sys_settimeofday64(NULL, tz);
> +
> +       if (tv && !timespec_valid(tv))
>                 return -EINVAL;

Looks like an extra check for (tv), maybe it will be better to use:
  +       if (!timespec_valid(tv))

Regards, Dima.