[linux-next:master 1965/7856] kernel/time/tick-legacy.c:29 legacy_timer_tick() warn: statement has no effect 31

[linux-next:master 1965/7856] kernel/time/tick-legacy.c:29 legacy_timer_tick() warn: statement has no effect 31

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Arnd Bergmann <arnd@arndb.de>
CC: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Linus Walleij <linus.walleij@linaro.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   62918e6fd7b5751c1285c7f8c6cbd27eb6600c02
commit: 56cc7b8acfb7c763f71c0492fa8da01dca7c1760 [1965/7856] timekeeping: remove xtime_update
:::::: branch date: 23 hours ago
:::::: commit date: 3 weeks ago
config: m68k-randconfig-m031-20201124 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
kernel/time/tick-legacy.c:29 legacy_timer_tick() warn: statement has no effect 31

vim +29 kernel/time/tick-legacy.c

b3550164a19d62e Arnd Bergmann 2020-09-24  12  
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  13  /**
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  14   * legacy_timer_tick() - advances the timekeeping infrastructure
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  15   * @ticks:	number of ticks, that have elapsed since the last call.
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  16   *
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  17   * This is used by platforms that have not been converted to
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  18   * generic clockevents.
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  19   *
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  20   * If 'ticks' is zero, the CPU is not handling timekeeping, so
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  21   * only perform process accounting and profiling.
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  22   *
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  23   * Must be called with interrupts disabled.
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  24   */
b3550164a19d62e Arnd Bergmann 2020-09-24  25  void legacy_timer_tick(unsigned long ticks)
b3550164a19d62e Arnd Bergmann 2020-09-24  26  {
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  27  	if (ticks) {
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24  28  		raw_spin_lock(&jiffies_lock);
56cc7b8acfb7c76 Arnd Bergmann 2020-09-24 @29  		write_seqcount_begin(&jiffies_seq);

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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