regulator_event_work_fn(9)

📦 version 7.3.1, in nixpkgs unstable

💅 regulator_event_work_fn(9) — the Kernel API Manual, bestie edition 🎀

okay so welcome to regulator_event_work_fn(9) from the Kernel API Manual, like this is the glow-up doc for one very specific little worker function and honestly she's doing a lot with very little. sit down, grab a strawberry drink 🍓, we're getting into it.

✨ NAME ✨

regulator_event_work_fn — she processes a deferred regulator event. "deferred" meaning it got pushed off to later, like homework, but make it kernel. 💀

🌸 SYNOPSIS 🌸

void regulator_event_work_fn (struct work_struct *work );

that's it. that's the whole signature. short queen, icon behavior, one argument, returns nothing (void), consumes a work struct. periodt. 👑

🦋 ARGUMENTS 🦋

  • work — a work_struct that got queued up by the notifier. yes THE notifier. it's the thing that put this work here in the first place, iykyk. 🫶

🔥 DESCRIPTION 🔥

so here's the tea: this function calls the regulator's notifier chain, and it does it in process context — not interrupt context, not some chaotic atomic spot, process context, okay, that distinction matters, write it down. 📝

and the way that it does that? it holds the rdev lock the whole time the chain is being called. locked and loaded, no gap.

then, once all that's done, it releases the device reference. like letting go of your friend's hand at the mall when you've reached the store. bye bestie, reference released, slay. 💅

quick recap because these details are everything: notifier chain, in process context, while holding the rdev lock, then releases the device reference. that's the whole vibe. don't reorder it, don't skip it, just vibe check it and move on. ✅

🌈 SEE ALSO 🌈

bestie. there are so many of these. this is the group chat and every single member is getting @'d. the Kernel file ./drivers/regulator/core.c is where the magic lives, and it's bringing all of these with it:

like I said. the whole friend group. mwah. 😘

and that's the page!! 🧚 lil sign-off for you: this one ships out of ./drivers/regulator, dated October 2026 — so go forth, hold that lock, call that chain, release that reference. you got this bestie, no cap, love u, bye 💜✨

📦 where this page comes from