pcim_request_all_regions(9)

📦 version 7.3.1, in nixpkgs unstable

✨ pcim_request_all_regions(9) ✨

okay bestie, so this is a page from the Kernel API Manual and it's literally all about pcim_request_all_regions — yes the whole thing, a function whose entire personality is "gimme every region bestie" 🎀

🌸 NAME 🌸

pcim_request_all_regions — Request all regions 💅

no cap, that's the whole vibe. all of them. not some. all.

🦋 SYNOPSIS 🦋

int pcim_request_all_regions (struct pci_dev *pdev , const char *name );

that's the whole signature, copy it exactly, don't be weird about it ✨

💖 ARGUMENTS 💖

  • pdev — the PCI device you wanna map IO resources for 🫶 that's your main character right there
  • name — the name of the driver that's requesting the resources, iykyk, gotta label your stuff 👑

⭐ RETURN ⭐

Returns 0 on success — slay 💅 — and a negative error code on failure 😭 so like, definitely check it, ngl.

🌈 DESCRIPTION 🌈

so here's the tea 🍓: the regions you request here will automatically be released at driver detach. it's giving built-in cleanup, we love a self-sufficient icon.

but if you're feeling particular, you can also release individual regions with pcim_release_region, or drop all of them at once with pcim_release_all_regions 🎀 whichever fits the moment, bestie.

👑 SEE ALSO 👑

okay this is the whole friend group, and yes you need all of them, no skipping 🙈

Kernel file ./drivers/pci/devres.c plus:

💀 real talk: every single one of those references stays in the list. that's not me being extra, that's just the rules. periodt.

sign-off time 🧚 this cutie lives under ./drivers/pci and the page itself is dated October 2026 — stamped and iconic, no notes 💜✨

📦 where this page comes from