tsi721_enable_msix(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tsi721_enable_msix — kernel API manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual, and it's all about tsi721_enable_msix. yes it's a long name. no we're not scared of it. let's go ✨

✨ NAME ✨

tsi721_enable_msix — the function that attempts to enable MSI-X support for Tsi721. note the word "attempts", bestie, it's giving "we'll try our best" energy 🙈

🦋 SYNOPSIS 🦋

int tsi721_enable_msix (struct tsi721_device *priv );

that's the whole signature, one line, no cap. 💅

🌸 ARGUMENTS 🌸

  • priv — pointer to the tsi721 private data. that's it, that's the whole argument list. she's a simple icon like that 👑

⭐ DESCRIPTION ⭐

so what does she actually do? tsi721_enable_msix configures MSI-X support for Tsi721. cute, right?

but here's the plot twist: it supports only an exact number of requested vectors. like, exactly exact. no "close enough", no "ehh let's round it" — the exact number or nothing, periodt. 🔥

💖 RETURN 💖

  • 0 on success 🌈
  • -errno value on failure 💀

so like, if you get a 0 you're slaying, and if you get a negative errno you've got a whole situation to deal with. iykyk.

👑 SEE ALSO 👑

the kernel file itself lives at ./drivers/rapidio/devices/tsi721.c, and honestly there's a whole friend group of tsi721 functions in there — go say hi to all of them:

like… that's a lot of friends. main character energy in the rapidio directory fr fr 🧚

and that's the page, bestie! this one came out of ./drivers/rapidio/devices, dated October 2026, and the whole thing is filed under tsi721_enable_msix(9). go forth and attempt to enable those MSI-X vectors responsibly 🫶💜

📦 where this page comes from