__devm_spi_alloc_controller(9)

💖 __devm_spi_alloc_controller(9) 💖

okay bestie, welcome to the Kernel API Manual entry for __devm_spi_alloc_controller(9) — yes, the title is literally in the header, and we’re folding the manual-name vibe right here so you know what’s up. ✨

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💖 NAME 💖

__devm_spi_alloc_controller — resource-managed __spi_alloc_controller() 🫶

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✨ SYNOPSIS ✨

struct spi_controller * __devm_spi_alloc_controller (struct device *dev
, unsigned int size , bool target );

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🎀 ARGUMENTS 🎀

• dev — physical device of SPI controller. the whole “whose driver is this?” girlie 💅
• size — how much zeroed driver-private data to allocate. zeroed, bestie, as in cleared out 🧼
• target — whether to allocate an SPI host (false) or SPI target (true) controller. it’s giving binary choose-your-own-adventure 🌈

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😴 CONTEXT 😴

can sleep. that’s it, that’s the context note 😭

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🌸 DESCRIPTION 🌸

Allocate an SPI controller and automatically release a reference on it when dev is unbound from its driver. Drivers are thus relieved from having to call spi_controller_put. literally resource-managed, so you don’t have to remember the cleanup era 💖

The arguments to this function are identical to __spi_alloc_controller. same lineup, same energy, no cap ✨

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🔥 RETURN 🔥

the SPI controller structure on success, else NULL. so: slay on success, NULL if not 🫶

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🦋 SEE ALSO 🦋

Kernel file ./drivers/spi/spi.c says also see:

• __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_finalize_current_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)
• 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)

mwah 💋 — this page is serving Kernel API Manual energy from ./drivers/spi, dated October 2026. byeee 🫶