qmi_txn_init(9)

📦 version 7.3.1, in nixpkgs unstable

✨ qmi_txn_init(9) ✨

okay so we're doing a Kernel API Manual drop, bestie — this is the page for qmi_txn_init, and it's genuinely one of the more important little gremlins in the QMI family. buckle up 🎀

💖 NAME 💖

qmi_txn_init — allocate a transaction id within the given QMI handle

like, it goes and gets you a shiny new txn id inside a QMI handle. that's the whole vibe 💅

🌸 SYNOPSIS 🌸

int qmi_txn_init (struct qmi_handle *qmi , struct qmi_txn *txn , const
       struct qmi_elem_info *ei , void *c_struct );

she takes four args and returns an int, no cap ✨

🦋 ARGUMENTS 🦋

  • qmi — the QMI handle. this is the main character, the thing you're allocating the transaction id within 👑
  • txn — the transaction context. the little home your txn id lives in 🏠
  • ei — description of how to decode a matching response. optional, so you can absolutely pass nothing here if you're not about that decode life 🙈
  • c_struct — pointer to the object to decode the response into. also optional, same energy 🫶

💜 DESCRIPTION 💜

so, the way that this works: qmi_txn_init allocates a transaction id within the QMI handle. that's the core bit, don't lose it 💫

and if you do specify ei and c_struct, then any responses to this transaction will be decoded as described by ei into c_struct. it's giving "custom decode pipeline" and honestly? obsessed 🔥

⚠️ important, bestie, read this twice: a client calling qmi_txn_init must call either qmi_txn_wait or qmi_txn_cancel to free up the allocated resources. like, you have to. no leaving it hanging, that's not the move 😭

🌈 RETURN 🌈

transaction id on success, negative errno on failure. simple, iconic, periodt 💅

⭐ SEE ALSO ⭐

kernel file ./drivers/soc/qcom/qmi_interface.c, plus the whole friend group 🫶:

okay that's the whole page!! this one came to you from ./drivers/soc/qcom, dated October 2026 — mwah, go allocate responsibly and remember to qmi_txn_wait or qmi_txn_cancel, i'm literally begging 🧚💖🎀

📦 where this page comes from