pvr_kccb_release_slot(9)

🌸 pvr_kccb_release_slot(9) 🌸

okay bestie, welcome to the Kernel API Manual — this one's a tiny little function page but she's important, so pay attention 💅

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✨ NAME ✨

pvr_kccb_release_slot — the "jk never mind" function 🫶 she releases a KCCB slot that you already reserved with pvr_kccb_reserve_slot()

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🦋 SYNOPSIS 🦋

void pvr_kccb_release_slot (struct pvr_device *pvr_dev );

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🎀 ARGUMENTS 🎀

• pvr_dev — the target PowerVR device, aka the actual GPU you're doing all this for 👑 this is the one you're handing back the slot for.

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💀 DESCRIPTION 💀

okay so listen carefully because this one has a vibe check attached: you should only call this if something went wrong after the pvr_kccb_reserve_slot call 😭 and you know — like, know know — that you're not gonna call pvr_kccb_send_cmd_reserved.

basically it's the cleanup path. you grabbed a slot, things went sideways, you're bailing, so you give the slot back instead of just... holding it forever like a coward 🙈

no cap: this is the failed-and-I-know-it release. if you're still planning to send the command, do not call this. periodt 💅

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🌈 SEE ALSO 🌈

sibling functions, the whole friend group, and the kernel file they all live in 🧚:

• Kernel file ./drivers/gpu/drm/imagination/pvr_ccb.c
• pvr_ccb_init(9)
• pvr_ccb_fini(9)
• pvr_ccb_slot_available_locked(9)
• pvr_fwccb_process(9)
• pvr_kccb_capacity(9)
• pvr_kccb_used_slot_count_locked(9)
• pvr_kccb_send_cmd_reserved_powered(9)
• pvr_kccb_try_reserve_slot(9)
• pvr_kccb_reserve_slot_sync(9)
• pvr_kccb_send_cmd_powered(9)
• pvr_kccb_send_cmd(9)
• pvr_kccb_wait_for_completion(9)
• pvr_kccb_is_idle(9)
• struct pvr_kccb_fence(9)
• pvr_kccb_wake_up_waiters(9)
• pvr_kccb_fini(9)
• pvr_kccb_init(9)
• pvr_kccb_fence_alloc(9)
• pvr_kccb_fence_put(9)
• pvr_kccb_reserve_slot(9)
• pvr_fwccb_init(9)

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that's the whole page bestie, she's short and sweet 🍓

sign-off time: this lil gem comes from ./drivers/gpu/drm/imagination, dated October 2026 — slay, love that for us 💖✨🎀