dma_async_device_unregister(9)

okay so bestie 💖 this is the dma_async_device_unregister(9) page from the Kernel API Manual, and we're gonna get you comfy with it. It's giving “cleanup era” energy, and yes, we're keeping every single detail.

✨ NAME ✨

dma_async_device_unregister — unregister a DMA device 💅

🌸 SYNOPSIS 🌸

void dma_async_device_unregister (struct dma_device *device );

🎀 ARGUMENTS 🎀

• device — pointer to struct dma_device. That's the one and only argument, bestie 🫶

🦋 DESCRIPTION 🦋

Okay so this routine is called by dma driver exit routines. dmaengine holds module references to prevent it being called while channels are in use. So the module-reference situation is the bodyguard here — periodt. 💀

🌈 SEE ALSO 🌈

Kernel file: ./drivers/dma/dmaengine.c — that's the source file to peep 👀

• 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)
• dmaengine_put(9)
• dma_async_device_register(9)
• dmaenginem_async_device_register(9)
• dma_wait_for_async_tx(9)
• dma_run_dependencies(9)

mwah 💋 that's the whole page, and the cute little source/version + date stamp at the very end is ./drivers/dma, October 2026 — bye bestie 🎀