fsl_chan_xfer_ld_queue(9)

✨ fsl_chan_xfer_ld_queue(9) ✨

okay so this is a page straight out of the Kernel API Manual bestie, and it's giving "tiny function, big responsibilities" energy 💅 no cap.

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🌸 NAME 🌸

fsl_chan_xfer_ld_queue — transfer any pending transactions 💫

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🎀 SYNOPSIS 🎀

void fsl_chan_xfer_ld_queue (struct fsldma_chan *chan );

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🦋 ARGUMENTS 🦋

• chan — the Freescale DMA channel, aka the main character of this whole operation 👑

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🔥 DESCRIPTION 🔥

okay so here's the vibe check you actually need to pass before you call this:

• HARDWARE STATE: idle 😴
• LOCKING: must hold chan->desc_lock 🔒

that's it, that's the whole description. no cap, it's short but it's iconic. literally two facts and both of them are load-bearing 🫶

ngl bestie, do NOT skip the locking line. you must be holding chan->desc_lock — this isn't a suggestion, it's the whole assignment 💀

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🌈 SEE ALSO 🌈

the whole friend group, gathered for you 🫂✨ (all of these live in the kernel file ./drivers/dma/fsldma.c):

• 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)
• fsldma_cleanup_descriptors(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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and that's the whole page, bestie 🎀 sending you off with the cutest little sign-off: this one shipped out of ./drivers/dma in October 2026, so if you cite it, cite it with love 💖✨ go get those pending transactions transferred, you absolute legend 🧚‍♀️👑