rio_read_config_8(9)

📦 version 7.3.1, in nixpkgs unstable

💅 rio_read_config_8 — a Kernel API Manual moment (section 9, bestie)

okay so picture this: you're deep in the kernel, you're in the Kernel API Manual, and you need exactly eight little bits out of a RIO device's config space. that's the whole gig. the function is rio_read_config_8 and honestly? she's iconic for it. 🎀

✨ NAME ✨

rio_read_config_8 — reads 8 bits from configuration space, no cap 🧚

🌸 SYNOPSIS 🌸

int rio_read_config_8 (struct rio_dev *rdev , u32 offset , u8 * data );

🦋 ARGUMENTS 🦋

  • rdev — the RIO device, your main character 💖
  • offset — where you're looking, like, the offset into the device's configuration space
  • data — pointer to read data into; that's where the eight bits land, periodt

👑 DESCRIPTION 👑

so basically: it reads 8 bits of data from the offset you specified, inside the RIO device's configuration space. that's it, that's the vibe. small, focused, does exactly what it says on the label. slay. ✨

🌈 SEE ALSO 🌈

kernel file ./include/linux/rio_drv.h — plus the whole friend group, and yes you're gonna hear about all of them:

lowkey important: the doc lives under ./include/linux, and this whole page is dated October 2026. bookmark it, you'll be back. 💜

okay bye bestie, go read your eight bits 🔥🫶

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