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Date: Fri, 31 Aug 2018 04:37:58 +0800
From: kbuild test robot <lkp@...el.com>
To: Pavel Machek <pavel@....cz>
Cc: kbuild-all@...org, linux-leds@...r.kernel.org,
jacek.anaszewski@...il.com,
kernel list <linux-kernel@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-omap@...r.kernel.org, tony@...mide.com, sre@...nel.org,
nekit1000@...il.com, mpartap@....net, merlijn@...zup.org
Subject: Re: [rfc] leds: add TI LMU backlight driver
Hi Pavel,
I love your patch! Yet something to improve:
[auto build test ERROR on j.anaszewski-leds/for-next]
[also build test ERROR on v4.19-rc1 next-20180830]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Pavel-Machek/leds-add-TI-LMU-backlight-driver/20180830-220414
base: https://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds.git for-next
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
drivers/leds/ti-lmu-backlight-core.c: In function 'ti_lmu_bl_init':
>> drivers/leds/ti-lmu-backlight-core.c:412:19: error: 'struct ti_lmu' has no member named 'backlight_initialized'
if (lmu_bank->lmu->backlight_initialized)
^~
drivers/leds/ti-lmu-backlight-core.c:414:15: error: 'struct ti_lmu' has no member named 'backlight_initialized'
lmu_bank->lmu->backlight_initialized = true;
^~
drivers/leds/ti-lmu-backlight-core.c: In function 'ti_lmu_bl_probe':
>> drivers/leds/ti-lmu-backlight-core.c:496:43: error: 'struct ti_lmu' has no member named 'id'
lmu_bank->cfg = &lmu_bl_cfg[lmu_bank->lmu->id];
^~
vim +412 drivers/leds/ti-lmu-backlight-core.c
403
404 static int ti_lmu_bl_init(struct ti_lmu_bank *lmu_bank)
405 {
406 struct regmap *regmap = lmu_bank->lmu->regmap;
407 const struct lmu_bl_reg_data *regdata =
408 lmu_bank->cfg->reginfo->init;
409 int num_init = lmu_bank->cfg->reginfo->num_init;
410 int i, ret;
411
> 412 if (lmu_bank->lmu->backlight_initialized)
413 return 0;
414 lmu_bank->lmu->backlight_initialized = true;
415
416 for (i = 0; regdata && i < num_init; i++) {
417 ret = regmap_update_bits(regmap, regdata->reg, regdata->mask,
418 regdata->val);
419 if (ret)
420 return ret;
421
422 regdata++;
423 }
424
425 return 0;
426 }
427
428 static int ti_lmu_bl_reload(struct ti_lmu_bank *lmu_bank)
429 {
430 int err;
431
432 ti_lmu_bl_init(lmu_bank);
433
434 err = ti_lmu_bl_configure(lmu_bank);
435 if (err)
436 return err;
437
438 printk("lmu: set_brightness %d\n", lmu_bank->default_brightness);
439 return ti_lmu_bl_set_brightness(lmu_bank, lmu_bank->current_brightness);
440 }
441
442 static int ti_lmu_bl_monitor_notifier(struct notifier_block *nb,
443 unsigned long action, void *unused)
444 {
445 struct ti_lmu_bank *lmu_bank = container_of(nb, struct ti_lmu_bank, nb);
446
447 if (action == LMU_EVENT_MONITOR_DONE) {
448 if (ti_lmu_bl_reload(lmu_bank))
449 return NOTIFY_STOP;
450 }
451
452 return NOTIFY_OK;
453 }
454
455 static int ti_lmu_bl_probe(struct platform_device *pdev)
456 {
457 struct ti_lmu_bank *lmu_bank;
458 int err;
459
460 printk("lmu: bl probe\n");
461 err = setup_of_node(pdev);
462 if (err)
463 return err;
464
465 printk("lmu: bank\n");
466 lmu_bank = devm_kzalloc(&pdev->dev, sizeof(*lmu_bank), GFP_KERNEL);
467 if (!lmu_bank)
468 return -ENOMEM;
469 lmu_bank->dev = &pdev->dev;
470 dev_set_drvdata(&pdev->dev, lmu_bank);
471
472 err = device_property_read_string(&pdev->dev, "label",
473 &lmu_bank->label);
474 if (err)
475 return err;
476
477 if (!strcmp(lmu_bank->label, "keyboard")) {
478 lmu_bank->label = "kbd_backlight";
479 } else
480 lmu_bank->default_brightness = 255;
481
482 lmu_bank->leds = ti_lmu_parse_led_sources(&pdev->dev);
483 if (lmu_bank->leds < 0)
484 return lmu_bank->leds;
485 else if (lmu_bank->leds == 0)
486 return -EINVAL;
487
488 device_property_read_u32(&pdev->dev, "default-brightness-level",
489 &lmu_bank->default_brightness);
490 device_property_read_u32(&pdev->dev, "ti,ramp-up-ms",
491 &lmu_bank->ramp_up_msec);
492 device_property_read_u32(&pdev->dev, "ti,ramp-down-ms",
493 &lmu_bank->ramp_down_msec);
494
495 lmu_bank->lmu = dev_get_drvdata(pdev->dev.parent);
> 496 lmu_bank->cfg = &lmu_bl_cfg[lmu_bank->lmu->id];
497 lmu_bank->bank_id = pdev->id;
498
499 ti_lmu_bl_init(lmu_bank);
500
501 err = ti_lmu_bl_configure(lmu_bank);
502 if (err)
503 return err;
504
505 err = ti_lmu_bl_add_device(lmu_bank);
506 if (err)
507 return err;
508
509 printk("lmu: brightness\n");
510 err = ti_lmu_bl_set_brightness(lmu_bank,
511 lmu_bank->default_brightness);
512 if (err)
513 return err;
514
515 /*
516 * Notifier callback is required because backlight device needs
517 * reconfiguration after fault detection procedure is done by
518 * ti-lmu-fault-monitor driver.
519 */
520 if (lmu_bank->cfg->fault_monitor_used) {
521 lmu_bank->nb.notifier_call = ti_lmu_bl_monitor_notifier;
522 err = blocking_notifier_chain_register(&lmu_bank->lmu->notifier,
523 &lmu_bank->nb);
524 if (err)
525 return err;
526 }
527
528 return 0;
529 }
530
---
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