uclogic_params_get_desc(9)

💅 uclogic_params_get_desc(9) 💅

okay so this is a page from the Kernel API Manual, and it's about one lil function that hands you a replacement report descriptor for a tablet's interface. yes bestie, we're in the hid-uclogic trenches. it's giving kernel-internals main character energy and honestly? we ate. 🎀

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✨ NAME ✨

uclogic_params_get_desc — get a replacement report descriptor for a tablet's interface. that's it, that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

int uclogic_params_get_desc (const struct uclogic_params *params , const
       __u8 **pdesc , unsigned int *psize );

three arguments, one int back. lowkey simple, highkey important. 💜

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🫶 ARGUMENTS 🫶

• params — the parameters of a tablet interface to get report descriptor for. Cannot be NULL. like, do not even try it, bestie. 🚫
• pdesc — location for the resulting, kmalloc-allocated report descriptor pointer, or for NULL, if there's no replacement report descriptor. Not modified in case of error. Cannot be NULL. so it holds either a pointer or NULL, and if things go sideways it stays exactly how you left it. iconique. ✨
• psize — location for the resulting report descriptor size, not set if there's no replacement report descriptor. Not modified in case of error. Cannot be NULL. same energy, different variable. 💅

ngl the recurring theme here is "cannot be NULL" and "not modified in case of error" — three for three, fr fr. 🙈

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👑 RETURN 👑

• 0 (zero) — if successful. slay. ✅
• -EINVAL — if invalid arguments are supplied. you gave it something cursed. 💀
• -ENOMEM — if failed to allocate memory. the kmalloc said no. 😭

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🌈 SEE ALSO 🌈

kernel file:

./drivers/hid/hid-uclogic-params.c

and literally the whole friend group of related functions, no cap:

• 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_init_invalid(9)
• uclogic_params_init_with_opt_desc(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)

that's the whole squad, go say hi. 🧚

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and that's the page!! 🍓 it lives under ./drivers/hid, and this lil gem is dated October 2026 — so yeah, future vibes only. bye bestie, go get that descriptor 💖🔥👑