scmi_devm_n...r_unregister(9)

💅 scmi_devm_notifier_unregister 💅

ok so bestie, welcome to the Kernel API Manual ✨ today's main character is scmi_devm_notifier_unregister(9) — yes, the header abbreviates it all dramatically as scmi_devm_n...r_unregister(9), we don't know why, we don't ask 🎀 and the footer's hanging out down at the bottom with the ./drivers/firmware/arm_scmi source and the October 2026 date, we'll get there 🫶

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🌸 NAME 🌸

scmi_devm_notifier_unregister — the managed, devres-flavored un-registration of a notifier_block for an event 💫

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✨ SYNOPSIS ✨

int scmi_devm_notifier_unregister (struct scmi_device *sdev , struct
       notifier_block *nb );

like, that's the whole vibe. two args, one int coming back at you 🦋

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🎀 ARGUMENTS 🎀

• sdev — a reference to an scmi_device whose embedded struct device is the one getting used for devres accounting 📒 (yes, the accounting, bestie, we love resource bookkeeping)
• nb — a standard notifier block to register for the specified event 🧚

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💖 DESCRIPTION 💖

okay so this one is a generic devres managed helper — highkey iconic — and what it does is explicitly un-register a notifier_block against a protocol event 🌈 the important part: that notifier block was previously registered using the above scmi_devm_notifier_register, so this is the breakup text to that registration, and it's a managed one 💅

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👑 RETURN 👑

• 0 on Success ⭐ — that's it, that's the whole function, we stan a one-value return

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🦋 SEE ALSO 🦋

the kernel file ./drivers/firmware/arm_scmi/notify.c Theory of operation(9) 🔥 plus the whole extended friend group, no cap:

• struct scmi_notify_instance(9)
• struct events_queue(9)
• struct scmi_event_header(9)
• struct scmi_registered_events_desc(9)
• struct scmi_registered_event(9)
• struct scmi_event_handler(9)
• scmi_lookup_and_call_event_chain(9)
• scmi_process_event_header(9)
• scmi_process_event_payload(9)
• scmi_events_dispatcher(9)
• scmi_notify(9)
• scmi_kfifo_free(9)
• scmi_initialize_events_queue(9)
• scmi_allocate_registered_events_desc(9)
• scmi_register_protocol_events(9)
• scmi_deregister_protocol_events(9)
• scmi_allocate_event_handler(9)
• scmi_free_event_handler(9)
• scmi_bind_event_handler(9)
• scmi_valid_pending_handler(9)
• scmi_register_event_handler(9)
• __scmi_event_handler_get_ops(9)
• scmi_get_active_handler(9)
• __scmi_enable_evt(9)
• scmi_put_handler_unlocked(9)
• scmi_event_handler_enable_events(9)
• scmi_notifier_register(9)
• scmi_notifier_unregister(9)
• scmi_devm_notifier_register(9)
• scmi_protocols_late_init(9)
• scmi_notification_init(9)
• scmi_notification_quiesce(9)
• scmi_notification_exit(9)

that's the whole roster, fr fr 💀🙈

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and that's the page bestie!! 🌟 sign-off time: brought to you by ./drivers/firmware/arm_scmi, dated October 2026, filed under scmi_devm_n...r_unregister(9) — mwah 💋 🍓💜