atc_get_residue(9)

💖 atc_get_residue(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this page is literally all about atc_get_residue, and no cap, it's the glow-up you needed. So what does it do? Simple: it gets the number of bytes residue for a cookie 🍪. And the residue itself? It gets passed by address and updated on success. That's the whole vibe. 👑

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🎀 SYNOPSIS 🎀

int atc_get_residue (struct dma_chan *chan , dma_cookie_t cookie , u32
*residue );

three lil arguments and you're in, fr fr 💅

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🦋 ARGUMENTS 🦋

• chan — the DMA channel, she's the main character here 💫
• cookie — the transaction identifier you're checking the status of 🍪 (iykyk)
• residue — the residue that's gonna get updated, okay periodt ✨

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🌸 RETURN 🌸

0 on success 🌈 — otherwise you get a -errno and, like, that's not the vibe 😭

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💜 SEE ALSO 💜

Kernel file ./drivers/dma/at_hdmac.c and its whole friend group, gathered here for your reading pleasure 🫶:

• struct atdma_sg(9)
• struct at_desc(9)
• enum atc_status(9)
• struct at_dma_chan(9)
• struct at_dma(9)
• atc_chan_is_enabled(9)
• atc_chan_is_paused(9)
• atc_chan_is_cyclic(9)
• set_lli_eol(9)
• struct at_dma_platform_data(9)
• struct at_dma_slave(9)
• atc_dostart(9)
• atc_calc_bytes_left(9)
• atc_get_llis_residue(9)
• atc_handle_error(9)
• atc_prep_dma_interleaved(9)
• atc_prep_dma_memcpy(9)
• atc_prep_dma_memset(9)
• atc_prep_slave_sg(9)
• atc_prep_dma_cyclic(9)
• atc_tx_status(9)
• atc_alloc_chan_resources(9)
• atc_free_chan_resources(9)
• at_dma_off(9)

like, the whole friend group showed up for this one 😭🔥

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and that's the page, babe 🧚💖 — brought to you by ./drivers/dma, dated October 2026, filed ever so cutely under atc_get_residue(9). slay, go read your kernel source, mwah 💅✨