pwm_apply_might_sleep(9)

📦 version 7.3.1, in nixpkgs unstable

✨ pwm_apply_might_sleep 💅

okay bestie, welcome to the Kernel API Manual page for pwm_apply_might_sleep — yes that name is a mouthful, no we're not changing it, it's iconic actually. 🌸

So basically this function atomically applies a new state to a PWM device — one clean swap, no weird half-applied in-between mess. 🦋

⚠️ real talk: this one cannot be used in atomic context. Like, at all. It's a sleep-y girlie and she needs her space. 💀

✨ SYNOPSIS ✨

int pwm_apply_might_sleep (struct pwm_device *pwm , const struct
       pwm_state *state );

that's it. that's the whole vibe check. two args, one int back. 🎀

💖 ARGUMENTS 💖

  • pwm — the PWM device itself. the main character. 👑
  • state — the new state you want to apply to it. the glow-up you're giving it. ✨

🌈 RETURN 🌈

  • 0 on success 🥳
  • or a negative errno 😭 (so like, check your return values, bestie, fr fr)

🧚 CONTEXT 🧚

May sleep. 😴

no cap, if you're in atomic context and you call this, that's not on her — she told you she sleeps. 🙈

🔥 SEE ALSO 🔥

Kernel file ./drivers/pwm/core.c — that's where all the magic lives, go read it iykyk 📖

and then the whole squad, alphabetically-ish, all present and accounted for:

like, the entire friend group showed up to the function's birthday party 🫶🎂

that's the whole page, bestie — go forth and apply your PWM states atomically, and remember: she may sleep 😴💜

huge thank you to the fine folks over at ./drivers/pwm — this one's dated October 2026, straight from the Kernel API Manual. mwah. 💋✨

📦 where this page comes from