[PATCH v3 04/12] iio: position: iqs624: use devm_blocking_notifier_chain_register()
From: Eliav Farber <hidden>
Date: 2026-07-26 06:38:02
Also in:
linux-acpi, linux-gpio, linux-iio, linux-pwm, lkml, platform-driver-x86
Subsystem:
iio subsystem and drivers, the rest · Maintainers:
Jonathan Cameron, 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 iqs624_pos_notifier_unregister() callback. Signed-off-by: Eliav Farber <redacted> Acked-by: Jonathan Cameron <redacted> --- drivers/iio/position/iqs624-pos.c | 24 +++--------------------- 1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/iio/position/iqs624-pos.c b/drivers/iio/position/iqs624-pos.c
index 8239239c6ee2..d2aa2df71457 100644
--- a/drivers/iio/position/iqs624-pos.c
+++ b/drivers/iio/position/iqs624-pos.c@@ -96,19 +96,6 @@ static int iqs624_pos_notifier(struct notifier_block *notifier, return ret; } -static void iqs624_pos_notifier_unregister(void *context) -{ - struct iqs624_pos_private *iqs624_pos = context; - struct iio_dev *indio_dev = iqs624_pos->indio_dev; - int ret; - - ret = blocking_notifier_chain_unregister(&iqs624_pos->iqs62x->nh, - &iqs624_pos->notifier); - if (ret) - dev_err(indio_dev->dev.parent, - "Failed to unregister notifier: %d\n", ret); -} - static int iqs624_pos_angle_get(struct iqs62x_core *iqs62x, unsigned int *val) { int ret;
@@ -255,19 +242,14 @@ static int iqs624_pos_probe(struct platform_device *pdev) mutex_init(&iqs624_pos->lock); iqs624_pos->notifier.notifier_call = iqs624_pos_notifier; - ret = blocking_notifier_chain_register(&iqs624_pos->iqs62x->nh, - &iqs624_pos->notifier); + ret = devm_blocking_notifier_chain_register(&pdev->dev, + &iqs624_pos->iqs62x->nh, + &iqs624_pos->notifier); if (ret) { dev_err(&pdev->dev, "Failed to register notifier: %d\n", ret); return ret; } - ret = devm_add_action_or_reset(&pdev->dev, - iqs624_pos_notifier_unregister, - iqs624_pos); - if (ret) - return ret; - return devm_iio_device_register(&pdev->dev, indio_dev); }
--
2.47.3