w1_reset_select_slave(9)

📦 version 7.3.1, in nixpkgs unstable

💅 w1_reset_select_slave(9) — like, the Kernel API Manual page, bestie

Okay so this is a page from the Kernel API Manual (the 9 section, kernel stuff, you know the vibe) and it's all about w1_reset_select_slave — yes, that's the whole name, it's a mouthful, I know, but she's iconic and she does exactly what she says on the tin. Let's get into it. 🦋

✨ NAME ✨

w1_reset_select_slave — reset and select a slave 🎀

Like, the name is genuinely the plot: reset the thing, then select the slave. No cap.

🌸 SYNOPSIS 🌸

int w1_reset_select_slave (struct w1_slave *sl );

That's it. One function, one argument, returns an int. Clean. Minimal. Main character energy. ✨

🫶 ARGUMENTS 🫶

  • sl — the slave to select 💖 (yes, that's the whole description, she's a simple girl)

👑 DESCRIPTION 👑

So here's the tea, bestie: w1_reset_select_slave resets the bus, and then it selects the slave — by sending either a skip rom or a rom match.

Which one does it pick? Okay so this is the cute part: a skip rom is issued if there is only one device registered on the bus. Only one bestie at the party? Skip the formalities, skip rom, boom. 💅

⚠️ Okay so this is the important bit, don't skip it: the w1 master lock must be held. Like, you gotta be holding the lock before you call this. Not a suggestion. It's giving "read the room." 👑

🌈 RETURN 🌈

  • 0 = success 🎉 slay, it worked
  • anything else = error 😭💀 it did not work

That's the whole scale. Zero or not-zero. Binary queen.

🧚 SEE ALSO 🧚

Kernel file ./drivers/w1/w1_io.c — and honestly the whole w1 girlie squad:

Go read them, they're all in the same group chat. 🫶✨

Okay that's the page!! 💖 Sending you off with the receipts: this one lives under ./drivers/w1, it's dated October 2026, and yeah — it's w1_reset_select_slave(9) all over again, because we're back where we started and that's the circle of life bestie 🌸🦋💜

📦 where this page comes from