dmaengine_put(9)

💅 dmaengine_put(9) — a Kernel API Manual moment

okay bestie, welcome to the Kernel API Manual, this one's called dmaengine_put(9) and it is honestly such a small icon. tiny function, huge vibe. ✨

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✨ NAME ✨

dmaengine_put — literally lets DMA drivers be removed when ref_count == 0. that's it, that's the whole job, and she does it flawlessly 🎀

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🌸 SYNOPSIS 🌸

void dmaengine_put (void );

no frills, no arguments, just vibes and a void 🦋

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💖 ARGUMENTS 💖

• void — no arguments. none. zero. the void is void-ing. main character energy of the emptiest kind 😭

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/dma/dmaengine.c — the actual source bestie, go read it
• dev_to_dma_chan(9)
• struct dma_chan_tbl_ent(9)
• dma_chan_is_local(9)
• min_chan(9)
• dma_channel_rebalance(9)
• balance_ref_count(9)
• dma_chan_get(9)
• dma_chan_put(9)
• dma_find_channel(9)
• dma_issue_pending_all(9)
• dma_get_slave_channel(9)
• __dma_request_channel(9)
• dma_request_chan(9)
• dma_request_chan_by_mask(9)
• devm_dma_request_chan(9)
• dmaengine_get(9)
• dma_async_device_register(9)
• dma_async_device_unregister(9)
• dmaenginem_async_device_register(9)
• dma_wait_for_async_tx(9)
• dma_run_dependencies(9)

like, the whole friend group showed up for this one 🫶

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ngl the ref counting is the moment. dmaengine_get(9) takes, dmaengine_put gives back, and when ref_count hits 0 the DMA drivers get to dip. iconic reciprocal behaviour 💅

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and that's the page!! courtesy of ./drivers/dma, dated October 2026, signed off by dmaengine_put(9) herself 💜 go forth and put your refs back, bestie, no leaks allowed ⭐🌈