gpio_request_one(9)

✨ gpio_request_one ✨

okay bestie, so this one is from the Kernel API Manual (section 9, we love a kernel function moment 💅) and it's literally called gpio_request_one — iconic name, honestly.

🌸 NAME 🌸

gpio_request_one — request a single GPIO with initial configuration 🎀

🦋 SYNOPSIS 🦋

int gpio_request_one (unsigned gpio , unsigned long flags , const char *label );

💖 ARGUMENTS 💖

• gpio — the GPIO number, like which one are we talking about bestie 👀
• flags — the GPIO configuration, as specified by GPIOF_* (yes, that whole family ✨)
• label — a literal description string of this GPIO, so everyone knows what it is 🏷️

🔥 DESCRIPTION 🔥

⚠️ DEPRECATED ⚠️

not me having to tell you this but: this function is deprecated and must not be used in new code. like, fr fr, do not. it's giving legacy energy 💀

🌈 RETURN 🌈

0 on success, or a negative errno on failure. that's it, that's the vibe check 🫶

👑 SEE ALSO 👑

• Kernel file ./drivers/gpio/gpiolib-legacy.c
• devm_gpio_request_one(9) — the one you probably actually want, iykyk 💜

and that's the whole page bestie, no cap 🧚 from ./drivers/gpio, dated October 2026, in the Kernel API Manual — slay, periodt 💅✨