STRUCT RESET_CONTROLLER_DEV(9)

🎀 struct reset_controller_dev(9) — the kernel API manual, bestie edition 🎀

okay so picture this: you're deep in struct reset_controller_dev(9) territory, straight out of the kernel API manual, and you need the tea on reset controllers. no worries babe, i got you 💖

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✨ NAME ✨

struct reset_controller_dev — the reset controller entity that might provide multiple reset controls 👑

like, one struct, many reset controls. it's giving main character energy with a whole friend group.

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🌸 SYNOPSIS 🌸

struct reset_controller_dev {
    const struct reset_control_ops *ops;
    struct module *owner;
    struct list_head list;
    struct list_head reset_control_head;
    struct device *dev;
    struct device_node *of_node;
    int of_reset_n_cells;
    int (*of_xlate)(struct reset_controller_dev *rcdev, const struct of_phandle_args *reset_spec);
    struct fwnode_handle *fwnode;
    int fwnode_reset_n_cells;
    int (*fwnode_xlate)(struct reset_controller_dev *rcdev, const struct fwnode_reference_args *reset_spec);
    unsigned int nr_resets;
    struct mutex lock;
 };

look at her. so many fields. so much structure. we stan a well-organized struct 🫶

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🦋 Members 🦋

• ops — a pointer to the device specific struct reset_control_ops. this is where the actual vibe lives, the device-specific behaviour 💅
• owner — the kernel module of the reset controller driver. gotta know who's responsible, yk?
• list — internal list of reset controller devices. lowkey bookkeeping, but make it iconic.
• reset_control_head — head of the internal list of requested reset controls. yes bestie, head of the list, leading the whole squad.
• dev — the corresponding driver model device struct. the actual device, no cap.
• of_node — the corresponding device tree node, as a phandle target. tree node things 🌈
• of_reset_n_cells — number of cells in reset line specifiers. count 'em.
• of_xlate — translation function to translate from specifier as found in the device tree to id as given to the reset control ops. literally a translator bestie, fluent in devicetree 🧚
• fwnode — firmware node associated with this device. firmware but make it node.
• fwnode_reset_n_cells — number of cells in reset line specifiers. same energy, fwnode flavour ✨
• fwnode_xlate — translation function to translate from firmware specifier to id as given to the reset control ops, defaults to :c:func:fwnode_reset_simple_xlate``. yes, there's a default, she's generous 💖
• nr_resets — number of reset controls in this reset controller device. how many resets? this many.
• lock — protects the reset control list from concurrent access. she's the bouncer at the club, keeping the list safe 🎀

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💜 SEE ALSO 💜

• Kernel file ./include/linux/reset-controller.h
• struct reset_control_ops(9)

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ok so quick vibe check: every field here is real and useful, please don't go inventing extra ones or renaming anything. the struct is perfect the way she is 💀

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and that's the whole page, bestie, you ate that 🍓 this one lives in the kernel API manual and comes to you from ./include/linux, dated October 2026, filed under struct reset_controller_dev(9). slay, go reset something responsibly 🔥👑