devm_nvmem_register(9)

💖 devm_nvmem_register(9) 💖

okay so this is a page from the Kernel API Manual, and bestie, it's literally about registering a managed nvmem device 🎀 like it handles the cleanup energy for you so you don't have to, and honestly? main character behavior.

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✨ NAME ✨

devm_nvmem_register — registers a managed nvmem device for a given nvmem_config. it also creates a binary entry in /sys/bus/nvmem/devices/dev-name/nvmem 🦋 which is honestly so iconic of it.

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🌸 SYNOPSIS 🌸

struct nvmem_device * devm_nvmem_register (struct device *dev , const
                                           struct nvmem_config *config );

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🎀 ARGUMENTS 🎀

• dev — the device that uses the nvmem device 💅 like, whose device is this even for.
• config — the nvmem device configuration that the nvmem device gets created with ✨ this is the whole blueprint, no cap.

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⭐ RETURN ⭐

so what do you get back? it'll be an ERR_PTR on error 😭 or a valid pointer to nvmem_device on success 👑 and yes, you have to actually check it, that's the vibe check, fr fr.

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🔥 SEE ALSO 🔥

like a whole group chat of related functions, iykyk 💜

• the kernel file ./drivers/nvmem/core.c
• nvmem_add_one_cell(9)
• nvmem_add_cells(9)
• nvmem_register_notifier(9)
• nvmem_unregister_notifier(9)
• nvmem_register(9)
• nvmem_unregister(9)
• of_nvmem_device_get(9)
• nvmem_device_get(9)
• nvmem_device_find(9)
• devm_nvmem_device_put(9)
• nvmem_device_put(9)
• devm_nvmem_device_get(9)
• of_nvmem_cell_get(9)
• nvmem_cell_get(9)
• devm_nvmem_cell_get(9)
• devm_nvmem_cell_put(9)
• nvmem_cell_put(9)
• nvmem_cell_read(9)
• nvmem_cell_write(9)
• nvmem_cell_read_u8(9)
• nvmem_cell_read_u16(9)
• nvmem_cell_read_u32(9)
• nvmem_cell_read_u64(9)
• nvmem_cell_read_variable_le_u32(9)
• nvmem_cell_read_variable_le_u64(9)
• nvmem_device_cell_read(9)
• nvmem_device_cell_write(9)
• nvmem_device_read(9)
• nvmem_device_write(9)
• nvmem_add_cell_lookups(9)
• nvmem_del_cell_lookups(9)
• nvmem_dev_name(9)
• nvmem_dev_size(9)

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that's the whole page bestie, go register something managed and slay 💅✨

signing off from ./drivers/nvmem, dated October 2026, page name devm_nvmem_register(9) — mwah, ily, go read the source 🫶🌸