STRUCT MDEV_DRIVER(9)

✨ struct mdev_driver(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 we're talking about struct mdev_driver — that's the Mediated device driver bestie, yes ma'am, the whole vibe 🎀

🌸 NAME 🌸

struct mdev_driver — Mediated device driver 💅

✨ SYNOPSIS ✨

struct mdev_driver {
    const char *device_api;
    unsigned int max_instances;
    int (*probe)(struct mdev_device *dev);
    void (*remove)(struct mdev_device *dev);
    unsigned int (*get_available)(struct mdev_type *mtype);
    ssize_t (*show_description)(struct mdev_type *mtype, char *buf);
    struct device_driver driver;
 };

look at that struct. it's giving organized. iconic honestly 🦋

🎀 Members 🎀

• device_api — the string that gets returned for the device_api sysfs 🫶 literally just the string, that's her whole job, and she ate.
• max_instances — the maximum number of instances supported. this one's optional btw, no pressure ✨
• probe — called when a new device is created 🌱 like the moment the new device shows up, this gets the call.
• remove — called when the device is removed 😭 bye bestie, this is your goodbye moment.
• get_available — returns the max number of instances that can be created 🔢 yes it's asking "how many can we make", and this gives the answer, periodt.
• show_description — prints a description of the mtype 🎀 like it's doing a little intro for the mtype, slay.
• driver — the device driver structure 💀 the main character of the struct tbh, lowkey the whole foundation.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/mdev.h 👑 go read it, iykyk.

and that's a wrap bestie 🧚💜 this little gem lives over in ./include/linux, dated October 2026 — so yeah, mark your calendars and go forth and mediate those devices fr fr 🍓🌸