STRUCT CEC_DEVNODE(9)

✨ struct cec_devnode(9) ✨

okay so bestie, this is a page from the Kernel API Manual — struct cec_devnode(9), the cec device node struct, and honestly it's giving very demure, very mindful kernel data structure. let's get into it 💅

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🌸 NAME 🌸

struct cec_devnode — cec device node 🎀

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🦋 SYNOPSIS 🦋

struct cec_devnode {
    struct device dev;
    struct cdev cdev;
    int minor;
    struct mutex lock;
    bool registered;
    bool unregistered;
    struct mutex lock_fhs;
    struct list_head fhs;
 };

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💖 Members 💖

• dev — the cec device itself ✨
• cdev — the cec character device 🎀
• minor — the device node's minor number, like its little ID badge 🪪
• lock — the lock that serializes open/release and registration 🔒
• registered — bestie's status: the device was correctly registered ✅
• unregistered — and this one says the device was unregistered 💀
• lock_fhs — the lock that controls access to fhs 🫶
• fhs — the list of open filehandles (cec_fh) 📋

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🌈 Description 🌈

This structure represents a cec-related device node. iconic of it, honestly.

ok so important locking tea ☕ — to add or remove filehandles from fhs, you must take the lock first, followed by lock_fhs. like, that order, no skipping. It is safe to access fhs if either lock is held. no cap.

The parent is a physical device. It must be set by core or device drivers before registering the node — so handle that first, bestie, don't come at registration unprepared 🙈

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⭐ SEE ALSO ⭐

Kernel file ./include/media/cec.h:

• struct cec_adapter(9)
• cec_is_registered(9)
• cec_queue_pin_cec_event(9)
• cec_queue_pin_hpd_event(9)
• cec_queue_pin_5v_event(9)
• cec_get_edid_phys_addr(9)
• cec_phys_addr_invalidate(9)
• cec_get_edid_spa_location(9)

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and that's the whole vibe check 🧚 this one comes from ./include/media, dated October 2026 — so like, future-era kernel documentation, main character energy fr fr. go read your structs, bestie, you're gonna slay 💜🔥