[PATCH v4 13/13] reboot: use devm_blocking_notifier_chain_register()
From: Eliav Farber <hidden>
Date: 2026-07-26 10:20:11
Also in:
linux-acpi, linux-gpio, linux-iio, linux-pwm, lkml, platform-driver-x86
Subsystem:
the rest · Maintainer:
Linus Torvalds
Replace the manual devres_alloc() + register_reboot_notifier() pattern with a single call to devm_blocking_notifier_chain_register(), removing the devm_unregister_reboot_notifier() callback. Signed-off-by: Eliav Farber <redacted> --- Changes in v3: - Fix commit message to accurately describe the old code as using devres_alloc() + register_reboot_notifier() (Sashiko) kernel/reboot.c | 24 ++---------------------- 1 file changed, 2 insertions(+), 22 deletions(-)
diff --git a/kernel/reboot.c b/kernel/reboot.c
index 695c33e75efd..557609419989 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c@@ -136,30 +136,10 @@ int unregister_reboot_notifier(struct notifier_block *nb) } EXPORT_SYMBOL(unregister_reboot_notifier); -static void devm_unregister_reboot_notifier(struct device *dev, void *res) -{ - WARN_ON(unregister_reboot_notifier(*(struct notifier_block **)res)); -} - int devm_register_reboot_notifier(struct device *dev, struct notifier_block *nb) { - struct notifier_block **rcnb; - int ret; - - rcnb = devres_alloc(devm_unregister_reboot_notifier, - sizeof(*rcnb), GFP_KERNEL); - if (!rcnb) - return -ENOMEM; - - ret = register_reboot_notifier(nb); - if (!ret) { - *rcnb = nb; - devres_add(dev, rcnb); - } else { - devres_free(rcnb); - } - - return ret; + return devm_blocking_notifier_chain_register(dev, + &reboot_notifier_list, nb); } EXPORT_SYMBOL(devm_register_reboot_notifier);
--
2.47.3