fsl_dma_allo...an_resources(9)

💖 fsl_dma_allo...an_resources(9) — bestie's guide to the Kernel API Manual 💖

okay so picture this: you're deep in the kernel, the manual is called fsl_dma_allo...an_resources(9) (yes the name got truncated, she's mysterious like that 😭), and you just need someone to explain it to you like a real one. that's me. i got you. 🫶

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✨ NAME ✨

fsl_dma_alloc_chan_resources — literally just "Allocate resources for DMA channel." that's the whole vibe. she allocates. she provides resources. icon behavior. 💅

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🌸 SYNOPSIS 🌸

int fsl_dma_alloc_chan_resources (struct dma_chan *dchan );

so she takes one thing and gives you back an int. simple. clean. no cap. ✨

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🎀 ARGUMENTS 🎀

• dchan — ok so the original literally just says "-- undescribed --" 💀 which is honestly so real of it. the docs said "not my job." we respect the honesty. it's the struct dma_chan * from the synopsis, and that's all we're getting bestie 🙈

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🦋 DESCRIPTION 🦋

okay so what does this actually do? bestie. she will create a dma pool for descriptor allocation. that's it. that's the whole thing. she's building the pool 🏊‍♀️ so descriptors have somewhere to live. main character energy fr fr.

Return — the number of descriptors allocated. so you get a count back. a little number. a little treat. 🍓

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🔥 SEE ALSO 🔥

so if you wanna go on a whole lore deep-dive (and honestly? same), here's the source file:

Kernel file ./drivers/dma/fsldma.c

and here's the full friend group — every single one of them, no skips, no cuts, the whole squad 💜:

• 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)
• fsldma_cleanup_descriptors(9)
• fsldma_free_desc_list(9)
• fsl_dma_free_chan_resources(9)
• fsl_dma_memcpy_issue_pending(9)
• fsl_tx_status(9)

go read them. i'm not asking. i'm telling you with love. 🫶✨

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👑 the sign-off 👑

and that's the page!! this iconic lil doc lives in ./drivers/dma and it's dated October 2026 — yeah, she's from the future, we don't ask questions. go forth and allocate your resources, bestie. slay. 💅🌈⭐