uclogic_par...ith_opt_desc(9)

💅 uclogic_par...ith_opt_desc(9) — like, the Kernel API Manual, but make it make sense ✨

okay bestie, so this one lives in the Kernel API Manual and its whole vibe is: initialize tablet interface parameters with an optional replacement report descriptor. and the tiny little plot twist? It only touches the report descriptor if the original one matches the expected size 🎀 like, it does a vibe check on the size first, no cap.

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🌸 NAME 🌸

uclogic_params_init_with_opt_desc — initialize tablet interface parameters with an optional replacement report descriptor. It only modifies the report descriptor if the original report descriptor matches the expected size. periodt 💅

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✨ SYNOPSIS ✨

int uclogic_params_init_with_opt_desc (struct uclogic_params *params ,
struct hid_device *hdev , unsigned int orig_desc_size , const __u8
*desc_ptr , unsigned int desc_size );

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🦋 ARGUMENTS 🦋

• params — the parameters you're initializing, bestie. (heads up: these get cleaned with uclogic_params_cleanup.) If something goes wrong it's not modified, so no half-done mess 🙈 and it cannot be NULL, fr fr.
• hdev — the HID device of the tablet interface you're creating the parameters for. also cannot be NULL 💀
• orig_desc_size — the expected size of the original report descriptor that's getting replaced. like the bouncer checking IDs at the door 👑
• desc_ptr — pointer to the replacement report descriptor. it can be NULL, but only if desc_size is zero. them's the rules 🤝
• desc_size — size of the replacement report descriptor. literally that's it 💖

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🔥 RETURN 🔥

• Zero — slay, it worked, successful ✨
• -EINVAL — an invalid argument was passed 😭
• -ENOMEM — failed to allocate memory, tragic, the malloc said no 💀

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👑 SEE ALSO 👑

Kernel file ./drivers/hid/hid-uclogic-params.c — go read it, it's giving main character energy 🫶

and the whole friend group:

uclogic_params_pen_inrange_to_str(9), uclogic_params_pen_hid_dbg(9), uclogic_params_frame_hid_dbg(9), uclogic_params_hid_dbg(9), uclogic_params_get_str_desc(9), uclogic_params_pen_cleanup(9), uclogic_params_pen_init_v1(9), uclogic_params_get_le24(9), uclogic_params_pen_init_v2(9), uclogic_params_frame_cleanup(9), uclogic_params_frame_init_with_desc(9), uclogic_params_frame_init_v1(9), uclogic_params_cleanup_event_hooks(9), uclogic_params_cleanup(9), uclogic_params_get_desc(9), uclogic_params_init_invalid(9), uclogic_params_huion_init(9), uclogic_probe_interface(9), uclogic_params_parse_ugee_v2_desc(9), uclogic_params_ugee_v2_init_frame_buttons(9), uclogic_params_ugee_v2_init_frame_dial(9), uclogic_params_ugee_v2_init_frame_mouse(9), uclogic_params_ugee_v2_has_battery(9), uclogic_params_ugee_v2_init_battery(9), uclogic_params_ugee_v2_reconnect_work(9), uclogic_params_ugee_v2_init_event_hooks(9), uclogic_params_ugee_v2_init(9), uclogic_params_init(9)

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okay that's the whole page, mwah 💋 this icon of a manpage comes to you from ./drivers/hid, dated October 2026 — drink some water, go touch grass, and remember: if the size doesn't match, the descriptor does NOT get replaced 🎀💜