spi_finalize...rent_message(9)

🦋 spi_finalize_current_message(9) — Kernel API Manual 🦋

okay so bestie, welcome to the Kernel API Manual, section 9, and we're talking about the one and only spi_finalize_current_message. it's giving "i'm done, take this off my plate" energy and honestly? iconic. let's get into it 💖

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✨ NAME ✨

spi_finalize_current_message — the current message is complete 🎀

like, literally, that's the whole vibe. message = done. periodt.

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🌸 SYNOPSIS 🌸

void spi_finalize_current_message (struct spi_controller *ctlr );

no cap, that's the whole signature. returns void, so nothing comes back to you — she doesn't do returns, she does vibes 💅

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💜 ARGUMENTS 💜

• ctlr — the controller to return the message to 🫶 like, this is the SPI controller that's getting its message handed back. she's the one who owns the queue, so she's the one who gets it.

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🔥 DESCRIPTION 🔥

so here's the tea ☕ — this one gets called by the driver to notify the core that the message sitting at the front of the queue is complete, and that it can be removed from the queue.

that's it. that's the whole job. driver says "bestie i'm finished", core says "say less" and pops that message off the front of the queue ✨

lowkey important: it's the front of the queue we're talking about — not just any message. front. of. the. queue. don't @ me 💀

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👑 SEE ALSO 👑

the whole friend group, fr fr — they all live in the kernel file ./drivers/spi/spi.c:

• __spi_register_driver(9)
• spi_alloc_device(9)
• spi_add_device(9)
• spi_new_device(9)
• spi_unregister_device(9)
• spi_register_board_info(9)
• spi_res_alloc(9)
• spi_res_free(9)
• spi_res_add(9)
• spi_res_release(9)
• spi_finalize_current_transfer(9)
• __spi_pump_messages(9)
• spi_pump_messages(9)
• spi_take_timestamp_pre(9)
• spi_take_timestamp_post(9)
• spi_set_thread_rt(9)
• spi_get_next_queued_message(9)
• spi_queued_transfer(9)
• spi_flush_queue(9)
• of_register_spi_devices(9)
• spi_new_ancillary_device(9)
• devm_spi_new_ancillary_device(9)
• acpi_spi_count_resources(9)
• acpi_spi_device_alloc(9)
• spi_target_abort(9)
• __spi_alloc_controller(9)
• __devm_spi_alloc_controller(9)
• spi_get_gpio_descs(9)
• spi_register_controller(9)
• devm_spi_register_controller(9)
• spi_unregister_controller(9)
• spi_replace_transfers(9)
• spi_split_transfers_maxsize(9)
• spi_split_transfers_maxwords(9)
• spi_set_cs_timing(9)
• spi_setup(9)
• spi_optimize_message(9)
• spi_unoptimize_message(9)
• devm_spi_optimize_message(9)
• spi_async(9)
• spi_sync(9)
• spi_sync_locked(9)
• spi_bus_lock(9)
• spi_bus_unlock(9)
• spi_write_then_read(9)

go read them all, i'll wait 🧚

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and that's the page!! sourced straight from ./drivers/spi, dated October 2026, and filed under spi_finalize...rent_message(9) because the header was being extra 😭 anyway ily, go finalize some messages, slay 💅✨🍓