[PATCH v4 02/13] pwm: iqs620a: use devm_blocking_notifier_chain_register()
From: Eliav Farber <hidden>
Date: 2026-07-26 10:18:07
Also in:
linux-acpi, linux-gpio, linux-iio, linux-pwm, lkml, platform-driver-x86
Subsystem:
pwm subsystem, the rest · Maintainers:
Uwe Kleine-König, Linus Torvalds
Replace the blocking_notifier_chain_register() + devm_add_action_or_reset() pattern with a single call to devm_blocking_notifier_chain_register(), removing the iqs620_pwm_notifier_unregister() callback. Signed-off-by: Eliav Farber <redacted> --- drivers/pwm/pwm-iqs620a.c | 21 +++------------------ 1 file changed, 3 insertions(+), 18 deletions(-)
diff --git a/drivers/pwm/pwm-iqs620a.c b/drivers/pwm/pwm-iqs620a.c
index 13e5e138c8e9..12f7b1415ed4 100644
--- a/drivers/pwm/pwm-iqs620a.c
+++ b/drivers/pwm/pwm-iqs620a.c@@ -173,17 +173,7 @@ static const struct pwm_ops iqs620_pwm_ops = { .get_state = iqs620_pwm_get_state, }; -static void iqs620_pwm_notifier_unregister(void *context) -{ - struct iqs620_pwm_private *iqs620_pwm = context; - int ret; - ret = blocking_notifier_chain_unregister(&iqs620_pwm->iqs62x->nh, - &iqs620_pwm->notifier); - if (ret) - dev_err(iqs620_pwm->dev, - "Failed to unregister notifier: %d\n", ret); -} static int iqs620_pwm_probe(struct platform_device *pdev) {
@@ -218,19 +208,14 @@ static int iqs620_pwm_probe(struct platform_device *pdev) mutex_init(&iqs620_pwm->lock); iqs620_pwm->notifier.notifier_call = iqs620_pwm_notifier; - ret = blocking_notifier_chain_register(&iqs620_pwm->iqs62x->nh, - &iqs620_pwm->notifier); + ret = devm_blocking_notifier_chain_register(&pdev->dev, + &iqs620_pwm->iqs62x->nh, + &iqs620_pwm->notifier); if (ret) { dev_err(&pdev->dev, "Failed to register notifier: %d\n", ret); return ret; } - ret = devm_add_action_or_reset(&pdev->dev, - iqs620_pwm_notifier_unregister, - iqs620_pwm); - if (ret) - return ret; - ret = devm_pwmchip_add(&pdev->dev, chip); if (ret) dev_err(&pdev->dev, "Failed to add device: %d\n", ret);
--
2.47.3