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

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Date:	Tue, 31 May 2016 19:16:55 -0700
From:	Dima Stepanov <dstepanov.src@...il.com>
To:	John Stultz <john.stultz@...aro.org>
Cc:	linux-kernel@...r.kernel.org,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Baolin Wang <baolin.wang@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Shuah Khan <shuahkh@....samsung.com>,
	Arnd Bergmann <arnd@...db.de>, Ingo Molnar <mingo@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	Prarit Bhargava <prarit@...hat.com>
Subject: Re: [RFC][PATCH 1/2] time: Fix problematic change in settimeofday
 error checking

> @@ -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.