STRUCT MHI_EP_BUF_INFO(9)

💅 struct mhi_ep_buf_info(9) — a whole page from the Kernel API Manual, bestie

okay so picture this: you're deep in the kernel docs, right? and you stumble on this little struct. it's giving "small but runs the whole group chat" energy, and honestly? obsessed. it's called struct mhi_ep_buf_info and it's literally the MHI Endpoint transfer buffer info. that's the NAME, periodt. 💖

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✨ SYNOPSIS ✨

here's the whole glow-up, verbatim, don't touch a single character:

struct mhi_ep_buf_info {
    struct mhi_ep_device *mhi_dev;
    void *dev_addr;
    u64 host_addr;
    size_t size;
    int code;
    void (*cb)(struct mhi_ep_buf_info *buf_info);
    void *cb_buf;
 };

okay she's cute, she's compact, she's about to explain herself member by member 🎀

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🌸 Members 🌸

time for the meet-the-cast segment. every single one of these matters, no skipping:

• mhi_dev — the MHI device that's associated with this buffer. like, whose buffer is this? this one. 💫
• dev_addr — the address of the buffer in the endpoint. that's the device-side address, bestie.
• host_addr — the address of the buffer in the host. yep, the other side of the situationship. two addresses, one buffer, iconic. 🦋
• size — the size of the buffer. self-explanatory, lowkey the most well-adjusted member here.
• code — the transfer completion code. it's giving "how did the transfer go" report card. ⭐
• cb — a callback that the controller drivers execute after transfer completion, and no cap: it's async. so don't sit there waiting for it like it's gonna text back first. 💀
• cb_buf — an opaque buffer that gets passed to that callback. it's opaque, so don't go poking around inside it, bestie. that's the vibe check and it failed. 🙈

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🔥 SEE ALSO 🔥

go read the kernel file ./include/linux/mhi_ep.h first (iykyk), then honestly just binge the whole friend group:

• struct mhi_ep_channel_config(9)
• struct mhi_ep_cntrl_config(9)
• struct mhi_ep_db_info(9)
• struct mhi_ep_cntrl(9)
• struct mhi_ep_device(9)
• struct mhi_ep_driver(9)
• __mhi_ep_driver_register(9)
• mhi_ep_driver_unregister(9)
• mhi_ep_register_controller(9)
• mhi_ep_unregister_controller(9)
• mhi_ep_power_up(9)
• mhi_ep_power_down(9)
• mhi_ep_queue_is_empty(9)
• mhi_ep_queue_skb(9)

that's the entire roster, no one got left on read 💜

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also quick note: cb is async, so the callback runs after the transfer completes, not during. do not block on it. main character energy only in the controller drivers. 👑

k bye love u, this page lives in ./include/linux, dated October 2026, and it goes by struct mhi_ep_buf_info(9) — slay, stay hydrated, read your headers 💅✨🎀