fsldma_cleanup_descriptors(9)

💅 fsldma_cleanup_descriptors(9) — like, the Kernel API Manual one 🎀

okay bestie, buckle up, we're doing kernel DMA bookkeeping and honestly? it's giving cleanup era ✨ (this is from the Kernel API Manual, yes, we're fancy now 💅)

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✨ NAME ✨

fsldma_cleanup_descriptors — cleanup link descriptors which are completed and move them to ld_completed to free until flag 'ack' is set 🧹💖

Like literally, that whole sentence is the vibe: finished descriptors get rounded up, callbacks happen, and they get parked in ld_completed until 'ack' says they can go 🫶

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🌸 SYNOPSIS 🌸

void fsldma_cleanup_descriptors (struct fsldma_chan *chan );

no return value, it's a void, she just does things and leaves 💅

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🦋 ARGUMENTS 🦋

• chan — Freescale DMA channel 👑 that's the one and only arg, the main character of this function fr fr

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🎀 DESCRIPTION 🎀

okay so picture this 😭 this function is used on descriptors which have been executed by the DMA controller — like, they've already had their moment, they ate, and now it's time to deal with the aftermath 🔥

It will run any callbacks, submit any dependencies, then free these descriptors if flag 'ack' is set ✅

that's it, that's the whole job, but it's important, no cap 🧚

note the conditional bestie!! nothing gets freed unless 'ack' is set — the flag is the whole gatekeeper here 🙈

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⭐ SEE ALSO ⭐

Kernel file ./drivers/dma/fsldma.c 🌈 and also, the whole friend group:

• fsl_chan_set_src_loop_size(9)
• fsl_chan_set_dst_loop_size(9)
• fsl_chan_set_request_count(9)
• fsl_chan_toggle_ext_pause(9)
• fsl_chan_toggle_ext_start(9)
• fsl_dma_free_descriptor(9)
• fsl_dma_alloc_descriptor(9)
• fsldma_clean_completed_descriptor(9)
• fsldma_run_tx_complete_actions(9)
• fsldma_clean_running_descriptor(9)
• fsl_chan_xfer_ld_queue(9)
• fsl_dma_alloc_chan_resources(9)
• fsldma_free_desc_list(9)
• fsl_dma_free_chan_resources(9)
• fsl_dma_memcpy_issue_pending(9)
• fsl_tx_status(9)

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alright that's the page!! 🫶 this little icon lives in ./drivers/dma, dated October 2026, and yeah — she's a fsldma_cleanup_descriptors(9) girlie through and through 💜 byeee 💖✨