cvs_resume(9)

📦 version 7.3.1, in nixpkgs unstable

💖 cvs_resume — like, the manual page (section 9 of the Kernel API Manual) 💖

okay bestie, gather round, because today we're talking about cvs_resume — yes it's a system resume callback, yes it lives in the kernel API manual (section 9, the driver/kernel-API girlies), and yes it's lowkey iconic. let's get into it 🎀

✨ SYNOPSIS ✨

int cvs_resume (struct device *dev );

that's it. that's the whole vibe. one function, one pointer, no cap. 💅

🌸 ARGUMENTS 🌸

  • dev — the Device. literally just the device struct, she's the main character here 🫶

🦋 DESCRIPTION 🦋

so here's the tea ☕ — cvs_resume does two (2) things and she does them fabulously:

  1. she re-validates the I2C link prefix (gotta make sure the link is still, y'know, linking ✨)
  2. she re-sends the host id, but only if transport is available — no transport, no host id, periodt 🙈

that's the whole job. wake up, check the link, wave the host id around if the transport's actually there. she's efficient, she's giving resume-callback energy, we stan 💜

🔥 RETURN 🔥

  • 0 on success — slay, we love a zero ✅
  • negative errno if the I2C check fails — not slay, but informative 😭
fr fr, if you see a negative errno come back, the I2C check did NOT pass its vibe check. handle it.

🌈 SEE ALSO 🌈

the whole friend group 💖 — kernel file ./drivers/media/i2c/cvs/core.c is where she hangs out, and here's everyone else in the group chat:

like, that's twenty-five (25) functions. twenty-five!! she's got a whole entourage 👑

and that's the page, bestie 🍓 this masterpiece of a manpage comes to you from ./drivers/media/i2c/cvs, dated October 2026 — screenshot it, frame it, put it on your fridge, mwah 💋✨

📦 where this page comes from