ddcb_requ_finished(9)

✨ ddcb_requ_finished(9) ✨

okay so bestie, this one lives in the Kernel API Manual — we're in kernel-land now, put your big-girl hat on 🎀

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💖 NAME 💖

ddcb_requ_finished — literally just returns the hardware state of the associated DDCB, that's the whole gig 🫶

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🌸 SYNOPSIS 🌸

int ddcb_requ_finished (struct genwqe_dev *cd , struct ddcb_requ *req );

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🦋 ARGUMENTS 🦋

• cd — pointer to the genwqe device descriptor, aka the device's little ID card 💅
• req — the DDCB work request itself, the main character of this whole function ngl 👑

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🌈 DESCRIPTION 🌈

So here's the tea ☕ — the status of ddcb_requ mirrors this hardware state, but it actually gets copied into the ddcb_requ over in the interrupt/polling function. Lowkey important distinction, so pay attention bestie:

• the lowlevel code should check the hardware state directly 🔥
• the higher level code should check the copy ✨

Like, know your lane, y'know? iykyk 💀

This function will also return true if the state of the queue is not GENWQE_CARD_USED. And why do we care? Because that's what enables us to purge all the DDCBs in the shutdown case 🧹💜 — very cleanup, very demure, very slay.

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🍓 SEE ALSO 🍓

Kernel file ./drivers/misc/genwqe/card_ddcb.c plus the whole friend group:

• genwqe_crc16(9)
• enqueue_ddcb(9)
• copy_ddcb_results(9)
• genwqe_check_ddcb_queue(9)
• __genwqe_wait_ddcb(9)
• get_next_ddcb(9)
• __genwqe_purge_ddcb(9)
• __genwqe_enqueue_ddcb(9)
• __genwqe_execute_raw_ddcb(9)
• genwqe_next_ddcb_ready(9)
• genwqe_ddcbs_in_flight(9)
• genwqe_card_thread(9)
• genwqe_setup_service_layer(9)
• queue_wake_up_all(9)
• genwqe_finish_queue(9)
• genwqe_release_service_layer(9)

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💀 reminder: lowlevel = hardware state direct, higher level = the copy. do not mix them up or it's giving undefined-vibes.

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aaaand that's a wrap bestie 🎀 this page came to you from ./drivers/misc/genwqe, dated October 2026, and it's called ddcb_requ_finished(9) — go forth and check those hardware states, ily, bye 💖✨🦋