mmc_regulato...age_notifier(9)

💅 mmc_regulato...age_notifier(9)

okay bestie, welcome to the Kernel API Manual ✨ this one's a lil page about telling the kernel "hey, we're done with the undervoltage notifier now" — short, sweet, and honestly iconic for how much it does with so little 🎀

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🌸 NAME 🌸

mmc_regulator_unregister_undervoltage_notifier — unregister undervoltage notifier 🫶

like, it's the cleanup queen. the "we're so done here" moment. the goodbye text in the group chat 💅

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✨ SYNOPSIS ✨

void mmc_regulator_unregister_undervoltage_notifier (struct mmc_host
*host );

that's it. that's the whole call. no return value (it's void, so it gives you nothing back, and honestly? relatable 😭) 💖

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🦋 ARGUMENTS 🦋

• host — the MMC host 👑 that's the one and only thing you hand over. just the host, nothing else. no cap.

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🌈 SEE ALSO 🌈

lowkey a whole friend group of related functions, and you will be clicking through all of them, iykyk:

• Kernel file ./drivers/mmc/core/regulator.c 📁
• mmc_ocrbitnum_to_vdd(9)
• mmc_regulator_get_ocrmask(9)
• mmc_regulator_set_ocr(9)
• mmc_regulator_set_vqmmc(9)
• mmc_regulator_set_vqmmc2(9)
• mmc_regulator_register_undervoltage_notifier(9)
• mmc_regulator_get_supply(9)
• mmc_regulator_enable_vqmmc(9)
• mmc_regulator_disable_vqmmc(9)

fr fr, if you're here you probably want mmc_regulator_register_undervoltage_notifier(9) too — that's the other half of this situationship 💀 register it, then unregister it. balance. periodt.

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and that's the vibe check, bestie 💜 this page lives in ./drivers/mmc/core, dated October 2026, and it's brought to you by the Kernel API Manual — mwah, go unregister something responsibly 🌸💅🎀