STRUCT FDL_STATE(9)

💅 struct fdl_state(9) — your Kernel API Manual bestie

💖 NAME 💖

struct fdl_state — the FDL state structure that literally keeps data between interrupts. That’s the whole vibe. 🫶

✨ SYNOPSIS ✨

struct fdl_state {
    struct completion begin;
    struct completion done;
    struct delayed_work timeout;
    struct mutex lock;
    struct sdca_interrupt *interrupt;
    struct sdca_fdl_set *set;
    int file_index;
};

🎀 Members 🎀

• begin — a completion that marks the start of an FDL download cycle. It’s giving “we’re so back” energy. ✨
• done — a completion that marks the end of an FDL download cycle. The “it’s over” signal, but make it cute. 🎀
• timeout — delayed work used for timing out UMP transactions. The timer bestie for UMP transactions. ⏳
• lock — mutex that protects between the timeout work and IRQ handlers. Keeps those two from stepping on each other’s toes. 🔒
• interrupt — pointer to the interrupt struct this FDL is attached to. Where your FDL hangs out. 🫶
• set — pointer to the FDL set currently being downloaded. The current download’s main character. 👑
• file_index — index of the current file being processed. Which file are we on? This number knows. 🔢

👀 SEE ALSO 👀

• Kernel file ./include/sound/sdca_fdl.h — go look, iykyk. 📖

That’s the whole page, bestie. Source/version: ./include/sound · Date: October 2026 · Page: struct fdl_state(9) 💖✨