hdm_write_completion(9)

✨ hdm_write_completion(9) ✨

okay so this is a page from the Kernel API Manual, section 9 (that's the kernel API section bestie, we love her) — and it's lowkey a tiny little function but she does so much. it's giving "small but mighty" energy fr fr 💅

---

💖 NAME 💖

hdm_write_completion — the completion function for submitted Tx URBs. that's it, that's the vibe 🎀

---

🦋 SYNOPSIS 🦋

void hdm_write_completion (struct urb *urb );

like, that's the whole signature. one arg. no return value. she's void and she's unbothered ✨

---

🌸 ARGUMENTS 🌸

• urb — the URB that has been completed. yes bestie, that URB. the one that just finished doing its little thing 👑

---

🔥 DESCRIPTION 🔥

okay so here's what happens, pay attention 🫶

this function checks the status of the completed URB. and then it's a little choose-your-own-adventure:

• if the URB has been unlinked before, it is immediately freed — like, no thoughts, head empty, goodbye 💀
• on any other error, the MBO transfer flag is set — not me setting flags at the scene of the crime 😭
• on success, it frees allocated resources and calls the completion function — iconic behavior, clean exit, we stan a responsible queen 👑

so yeah. three paths. she handles all of them. main character energy tbh 🌈

---

⭐ CONTEXT ⭐

interrupt! ⚡

like actually. this runs in interrupt context. keep that in mind bestie, no sleeping on the job, no blocking, we're in the fast lane here 🏎️💨

---

💜 SEE ALSO 💜

the whole friend group, gathered for you 💖:

• Kernel file ./drivers/most/most_usb.c
• struct most_dci_obj(9)
• struct most_dev(9)
• drci_rd_reg(9)
• drci_wr_reg(9)
• get_stream_frame_size(9)
• hdm_poison_channel(9)
• hdm_add_padding(9)
• hdm_remove_padding(9)
• hdm_read_completion(9)
• hdm_enqueue(9)
• hdm_configure_channel(9)
• hdm_request_netinfo(9)
• link_stat_timer_handler(9)
• wq_netinfo(9)
• wq_clear_halt(9)
• hdm_probe(9)
• hdm_disconnect(9)

like a whole group chat of functions. go read them. iykyk 🧚

---

aaaaand that's the page!! 🌸 source is ./drivers/most, and the date on this lil masterpiece is October 2026 — so mark your calendars bestie, this one's dated and everything 🎀💖 no cap, that's the whole thing. periodt. ✨