[dwmw2:hardpps-filter-soak 32/33] drivers/ptp/ptp_gnss_extint.c:349:27: warning: variable 'raw_pre' set but not used

[kernel test robot <lkp@intel.com>]

tree:   git://git.infradead.org/users/dwmw2/linux hardpps-filter-soak
head:   d2ddff11f0edd8219413b800af3cee8f28aa858d
commit: 2b23d81ff6919d919634c599e3f9bb18ddc6affb [32/33] [PROTOTYPE] ptp: ptp_gnss_extint: Synthesize a latency-free PPS source
config: arm-randconfig-1001-20261018 (https://download.01.org/0day-ci/archive/20261018/202610180911.5VdX6eyB-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261018/202610180911.5VdX6eyB-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610180911.5VdX6eyB-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/ptp/ptp_gnss_extint.c:349:27: warning: variable 'raw_pre' set but not used [-Wunused-but-set-variable]
     349 |         u64 real_pre, real_post, raw_pre, raw_post;
         |                                  ^
>> drivers/ptp/ptp_gnss_extint.c:349:36: warning: variable 'raw_post' set but not used [-Wunused-but-set-variable]
     349 |         u64 real_pre, real_post, raw_pre, raw_post;
         |                                           ^
   2 warnings generated.


vim +/raw_pre +349 drivers/ptp/ptp_gnss_extint.c

   345	
   346	static void gnss_extint_pps_work(struct work_struct *work)
   347	{
   348		struct gnss_extint *ge = container_of(work, struct gnss_extint, pps_work);
 > 349		u64 real_pre, real_post, raw_pre, raw_post;
   350		s64 tgps, delta = 0;
   351		unsigned long flags;
   352		bool ok = false;
   353	
   354		mutex_lock(&ge->xts_lock);
   355		reinit_completion(&ge->tm2_done);
   356	
   357		local_irq_save(flags);
   358		gpiod_set_value(ge->extint, 0);		/* warm the set path */
   359		raw_pre = ktime_get_raw_ns();
   360		real_pre = ktime_get_real_ns();
   361		gpiod_set_value(ge->extint, 1);
   362		real_post = ktime_get_real_ns();
   363		raw_post = ktime_get_raw_ns();
   364		local_irq_restore(flags);
   365	
   366		if (wait_for_completion_interruptible_timeout(&ge->tm2_done,
   367						msecs_to_jiffies(1500)) > 0) {
   368			tgps = ktime_to_ns(ge->tm2_utc);
   369			delta = NSEC_PER_SEC * div64_s64(tgps + NSEC_PER_SEC / 2,
   370							 NSEC_PER_SEC) - tgps;
   371			ok = true;
   372		}
   373		gpiod_set_value(ge->extint, 0);
   374	
   375		if (ok) {
   376			struct ptp_clock_event evt = {
   377				.type = PTP_CLOCK_PPSUSR,
   378			};
   379	
   380			evt.pps_times.ts_real = ns_to_timespec64(
   381				(real_pre + real_post) / 2 + delta);
   382	#ifdef CONFIG_NTP_PPS
   383			evt.pps_times.ts_raw = ns_to_timespec64(
   384				(raw_pre + raw_post) / 2 + delta);
   385	#endif
   386			ptp_clock_event(ge->ptp, &evt);
   387		}
   388	
   389		/* steer the next edge onto the GPS second boundary */
   390		ge->pps_next = ktime_add_ns(ge->pps_next, NSEC_PER_SEC + delta);
   391		hrtimer_start(&ge->pps_timer, ge->pps_next, HRTIMER_MODE_ABS);
   392		mutex_unlock(&ge->xts_lock);
   393	}
   394	

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