nvec_write_sync(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nvec_write_sync(9) 💅

okay so bestie, welcome to the nvec_write_sync page 💖 this is from the Kernel API Manual, and it's literally the "send it and wait for the answer" girlie of the nvec family. no cap, she's the patient one ✨

🌸 NAME 🌸

nvec_write_sync — write a message to nvec and read the response 🫶

✨ SYNOPSIS ✨

int nvec_write_sync (struct nvec_chip *nvec , const unsigned char *data
, short size , struct nvec_msg **msg );

like, that's the whole vibe check right there 👑

🎀 ARGUMENTS 🎀

  • nvec — an struct nvec_chip 💜 that's your chip, your main character
  • data — the data to write 📝 the actual payload, the moment
  • size — the size of data 🌸 how many bytes we're serving
  • msg — the response message received 🦋 the tea comes back through here

🧚 DESCRIPTION 🧚

so this one is similar to nvec_write_async, except — and this is the whole point — it waits for the request to be answered before returning. like, she doesn't just fire and forget, she sends it and then sits there until the reply shows up. respect tbh 💅

⚠️ important bestie: this function uses a mutex, which means it can not be called from e.g. interrupt handlers. do not do that. that's a no. 🙈

⭐ RETURN ⭐

  • 0 on success 🎉
  • a negative error code on failure 😭

the response message comes back to you in msg 🎁 and — listen — it shall be freed with nvec_msg_free once it's no longer used. don't leave her hanging, free your messages, it's giving basic hygiene 🧼✨

🌈 SEE ALSO 🌈

literally the whole friend group, go say hi 👋💖

kernel file ./drivers/staging/nvec/nvec.c, plus:

okay that's the page!! 🎀 this lil baddie lives in ./drivers/staging/nvec, dated October 2026 — mwah, go forth and sync responsibly, iykyk 💜🔥👑

📦 where this page comes from