vchan_tx_prep(9)

okay so bestie, welcome to vchan_tx_prep(9) from the Kernel API Manual — it’s literally the page about getting a descriptor ready, and it’s serving main-character energy. 💅✨

🌸 NAME 🌸

vchan_tx_prep — prepare a descriptor. That’s the whole vibe: prep the descriptor, no cap. 🎀

✨ SYNOPSIS ✨

here’s the full signature, kept exact because we do not play with code:

struct dma_async_tx_descriptor * vchan_tx_prep (struct virt_dma_chan *vc
, struct virt_dma_desc *vd , unsigned long tx_flags );

🦋 ARGUMENTS 🦋

• vc — the virtual channel allocating this descriptor, periodt. 👑
• vd — the virtual descriptor you’re preparing, bestie. 🍓
• tx_flags — the flags argument passed in to the prepare function, fr fr. 🔥

💜 SEE ALSO 💜

the whole friend group is here, plus the kernel file ./drivers/dma/virt-dma.h:

• Kernel file ./drivers/dma/virt-dma.h
• vchan_issue_pending(9)
• vchan_cookie_complete(9)
• vchan_vdesc_fini(9)
• vchan_cyclic_callback(9)
• vchan_terminate_vdesc(9)
• vchan_next_desc(9)
• vchan_get_all_descriptors(9)
• vchan_synchronize(9)

this page is brought to you by the ./drivers/dma source and the October 2026 date, and vchan_tx_prep(9) is out — bye bestie! 💖💅🫶