STRUCT MMC_RPMB_DATA(9)

🌸 NAME 🌸

okay bestie, welcome to the struct mmc_rpmb_data(9) page from the Kernel API Manual 💅 — this one is literally about a special RPMB device type for these areas. That's the whole vibe: RPMB areas get their own little device setup, and this struct is the main character energy holding it together ✨

🦋 SYNOPSIS 🦋

struct mmc_rpmb_data {
    struct device dev;
    struct cdev chrdev;
    int id;
    unsigned int part_index;
    struct mmc_blk_data *md;
    struct rpmb_dev *rdev;
    struct list_head node;
};

🎀 MEMBERS 🎀

• dev — the device for the RPMB area 🫶 like, this is the device-side representation.
• chrdev — character device for the RPMB area 💖 yes, a char device, slay.
• id — unique device ID number 🔢 no cap, every one gets its own ID.
• part_index — partition index, and it's 0 on first 👑 so the first one starts at zero.
• md — parent MMC block device 🌈 it's the MMC block device this RPMB thing belongs to.
• rdev — registered RPMB device ⭐ the RPMB device that got registered.
• node — list item, so we can put this device on a list 🧚 literally just here so it can be linked into a list.

💜 SEE ALSO 💜

• Kernel file: ./drivers/mmc/core/block.c 📁
• mmc_rpmb_ioctl(9) 👀

okay that's the whole page, bestie — sourced from ./drivers/mmc/core, dated October 2026 💖 mwah 💋