diff options
Diffstat (limited to 'drivers/input/misc/pwm-beeper.c')
| -rw-r--r-- | drivers/input/misc/pwm-beeper.c | 56 |
1 files changed, 19 insertions, 37 deletions
diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c index edca0d737750..0e19e97d98ec 100644 --- a/drivers/input/misc/pwm-beeper.c +++ b/drivers/input/misc/pwm-beeper.c @@ -1,16 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> * PWM beeper driver - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * */ #include <linux/input.h> @@ -48,7 +39,7 @@ static int pwm_beeper_on(struct pwm_beeper *beeper, unsigned long period) state.period = period; pwm_set_relative_duty_cycle(&state, 50, 100); - error = pwm_apply_state(beeper->pwm, &state); + error = pwm_apply_might_sleep(beeper->pwm, &state); if (error) return error; @@ -141,18 +132,13 @@ static int pwm_beeper_probe(struct platform_device *pdev) return -ENOMEM; beeper->pwm = devm_pwm_get(dev, NULL); - if (IS_ERR(beeper->pwm)) { - error = PTR_ERR(beeper->pwm); - if (error != -EPROBE_DEFER) - dev_err(dev, "Failed to request PWM device: %d\n", - error); - return error; - } + if (IS_ERR(beeper->pwm)) + return dev_err_probe(dev, PTR_ERR(beeper->pwm), "Failed to request PWM device\n"); /* Sync up PWM state and ensure it is off. */ pwm_init_state(beeper->pwm, &state); state.enabled = false; - error = pwm_apply_state(beeper->pwm, &state); + error = pwm_apply_might_sleep(beeper->pwm, &state); if (error) { dev_err(dev, "failed to apply initial PWM state: %d\n", error); @@ -160,13 +146,9 @@ static int pwm_beeper_probe(struct platform_device *pdev) } beeper->amplifier = devm_regulator_get(dev, "amp"); - if (IS_ERR(beeper->amplifier)) { - error = PTR_ERR(beeper->amplifier); - if (error != -EPROBE_DEFER) - dev_err(dev, "Failed to get 'amp' regulator: %d\n", - error); - return error; - } + if (IS_ERR(beeper->amplifier)) + return dev_err_probe(dev, PTR_ERR(beeper->amplifier), + "Failed to get 'amp' regulator\n"); INIT_WORK(&beeper->work, pwm_beeper_work); @@ -212,7 +194,7 @@ static int pwm_beeper_probe(struct platform_device *pdev) return 0; } -static int __maybe_unused pwm_beeper_suspend(struct device *dev) +static int pwm_beeper_suspend(struct device *dev) { struct pwm_beeper *beeper = dev_get_drvdata(dev); @@ -221,22 +203,22 @@ static int __maybe_unused pwm_beeper_suspend(struct device *dev) * beeper->suspended, but to ensure that pwm_beeper_event * does not re-submit work once flag is set. */ - spin_lock_irq(&beeper->input->event_lock); - beeper->suspended = true; - spin_unlock_irq(&beeper->input->event_lock); + scoped_guard(spinlock_irq, &beeper->input->event_lock) { + beeper->suspended = true; + } pwm_beeper_stop(beeper); return 0; } -static int __maybe_unused pwm_beeper_resume(struct device *dev) +static int pwm_beeper_resume(struct device *dev) { struct pwm_beeper *beeper = dev_get_drvdata(dev); - spin_lock_irq(&beeper->input->event_lock); - beeper->suspended = false; - spin_unlock_irq(&beeper->input->event_lock); + scoped_guard(spinlock_irq, &beeper->input->event_lock) { + beeper->suspended = false; + } /* Let worker figure out if we should resume beeping */ schedule_work(&beeper->work); @@ -244,8 +226,8 @@ static int __maybe_unused pwm_beeper_resume(struct device *dev) return 0; } -static SIMPLE_DEV_PM_OPS(pwm_beeper_pm_ops, - pwm_beeper_suspend, pwm_beeper_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(pwm_beeper_pm_ops, + pwm_beeper_suspend, pwm_beeper_resume); #ifdef CONFIG_OF static const struct of_device_id pwm_beeper_match[] = { @@ -259,7 +241,7 @@ static struct platform_driver pwm_beeper_driver = { .probe = pwm_beeper_probe, .driver = { .name = "pwm-beeper", - .pm = &pwm_beeper_pm_ops, + .pm = pm_sleep_ptr(&pwm_beeper_pm_ops), .of_match_table = of_match_ptr(pwm_beeper_match), }, }; |