10:42 p.m.
tree: http://git.linaro.org/people/daniel.lezcano/linux timers/drivers/timer-ti
head: aba1ad05da088944a62eb87fb0cd8391152e8985
commit: aba1ad05da088944a62eb87fb0cd8391152e8985 [2/2] clocksource/drivers/timer-ti-dm:
Add clockevent and clocksource support
config: arm-defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout aba1ad05da088944a62eb87fb0cd8391152e8985
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
drivers/clocksource/timer-ti-dm-systimer.c: In function
'dmtimer_clockevent_init':
> drivers/clocksource/timer-ti-dm-systimer.c:517:6: warning:
variable 'pa' set but not used [-Wunused-but-set-variable]
517 | u32 pa;
| ^~
drivers/clocksource/timer-ti-dm-systimer.c: In function
'dmtimer_clocksource_init':
drivers/clocksource/timer-ti-dm-systimer.c:640:6: warning: variable 'pa' set but
not used [-Wunused-but-set-variable]
640 | u32 pa;
| ^~
vim +/pa +517 drivers/clocksource/timer-ti-dm-systimer.c
510
511 static int __init dmtimer_clockevent_init(struct device_node *np)
512 {
513 struct dmtimer_clockevent *clkevt;
514 struct clock_event_device *dev;
515 struct dmtimer_systimer *t;
516 int error;
517 u32 pa;
518
519 clkevt = kzalloc(sizeof(*clkevt), GFP_KERNEL);
520 if (!clkevt)
521 return -ENOMEM;
522
523 t = &clkevt->t;
524 dev = &clkevt->dev;
525
526 /*
527 * We mostly use cpuidle_coupled with ARM local timers for runtime,
528 * so there's probably no use for CLOCK_EVT_FEAT_DYNIRQ here.
529 */
530 dev->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
531 dev->rating = 300;
532 dev->set_next_event = dmtimer_set_next_event;
533 dev->set_state_shutdown = dmtimer_clockevent_shutdown;
534 dev->set_state_periodic = dmtimer_set_periodic;
535 dev->set_state_oneshot = dmtimer_clockevent_shutdown;
536 dev->tick_resume = dmtimer_clockevent_shutdown;
537 dev->cpumask = cpu_possible_mask;
538
539 dev->irq = irq_of_parse_and_map(np, 0);
540 if (!dev->irq) {
541 error = -ENXIO;
542 goto err_out_free;
543 }
544
545 error = dmtimer_systimer_setup(np, &clkevt->t);
546 if (error)
547 goto err_out_free;
548
549 clkevt->period = 0xffffffff - DIV_ROUND_CLOSEST(t->rate, HZ);
550
551 /*
552 * For clock-event timers we never read the timer counter and
553 * so we are not impacted by errata i103 and i767. Therefore,
554 * we can safely ignore this errata for clock-event timers.
555 */
556 writel_relaxed(OMAP_TIMER_CTRL_POSTED, t->base + t->ifctrl);
557
558 error = request_irq(dev->irq, dmtimer_clockevent_interrupt,
559 IRQF_TIMER, "clockevent", clkevt);
560 if (error)
561 goto err_out_unmap;
562
563 writel_relaxed(OMAP_TIMER_INT_OVERFLOW, t->base + t->irq_ena);
564 writel_relaxed(OMAP_TIMER_INT_OVERFLOW, t->base + t->wakeup);
565
566 pa = of_translate_address(np, of_get_address(np, 0, NULL, NULL));
567 pr_info("TI gptimer clockevent: %s%lu Hz at %pOF\n",
568 of_find_property(np, "ti,timer-alwon", NULL) ?
569 "always-on " : "", t->rate, np->parent);
570
571 clockevents_config_and_register(dev, t->rate,
572 3, /* Timer internal resynch latency */
573 0xffffffff);
574
575 if (of_device_is_compatible(np, "ti,am33xx") ||
576 of_device_is_compatible(np, "ti,am43")) {
577 dev->suspend = omap_clockevent_idle;
578 dev->resume = omap_clockevent_unidle;
579 }
580
581 return 0;
582
583 err_out_unmap:
584 iounmap(t->base);
585
586 err_out_free:
587 kfree(clkevt);
588
589 return error;
590 }
591
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org