xgpio_probe(9)

📦 version 7.3.1, in nixpkgs unstable

💅 xgpio_probe(9) — Kernel API Manual ✨

okay so bestie, welcome to xgpio_probe from the Kernel API Manual 🎀 this is the little function that shows up when the kernel is like "hey, is there actually a GPIO device here or are you lying to me" and it's literally the moment of truth. main character energy fr.

🌸 NAME 🌸

xgpio_probe — the probe method for the GPIO device, periodt 💅

So like, when the driver framework wants to know if a GPIO device is real and ready to be claimed, this is the function it calls. It's giving first-day-of-school vibe check 🦋

✨ SYNOPSIS ✨

int xgpio_probe (struct platform_device *pdev );
ngl copy that exactly as written, that stray space before the closing paren is iconic and we're not touching it 🙈

🫶 ARGUMENTS 🫶

  • pdev — pointer to the platform device 💖 that's it, that's the whole argument list, one (1) pointer to a struct platform_device, and it's the device your function is being asked to probe. slay.

🔥 RETURN 🔥

It returns 0 if the driver is bound to the GPIO device 💚 — like, everything's official, we're committed, matching bracelets and all 🫶

Or it returns a negative value if there's an error 😭 — so if you see a negative number coming back, that's the "nope, didn't work" signal. Keep that in mind when you're checking the result, okay? Don't ignore it bestie.

🦋 SEE ALSO 🦋

Take a little field trip, iykyk — the kernel file lives at ./drivers/gpio/gpio-xilinx.c and you should definitely go look at it, along with all of these:

Go read them all, they're all part of the same friend group 💜

💀 reminder: the whole crew lives under ./drivers/gpio — that's the neighborhood.

and that's the whole page bestie!! 🎀 this one came from the ./drivers/gpio source, dated October 2026 — historical document, iconic era, no cap 💖✨ see you in the next one 🌈🦋

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