gpio_chrdev_open(9)

✨ gpio_chrdev_open (9) ✨

okay so bestie, welcome to the Kernel API Manual page for gpio_chrdev_open 💅 this is the function that opens up the chardev so you can do your ioctl operations. literally the door-unlocker of the whole situation 🚪✨

🌸 NAME 🌸

gpio_chrdev_open — open the chardev for ioctl operations 🎀

🦋 SYNOPSIS 🦋

int gpio_chrdev_open (struct inode *inode , struct file *file );

💜 ARGUMENTS 💜

• inode — the inode for this chardev, bestie. it's giving "which one are we even talking about" energy 🪪
• file — the file struct where the private data gets stashed 🙈 like a little secret compartment, iykyk

⭐ RETURN ⭐

0 on success 🎉 or a negative errno if it fails 😭 no in-between, no cap.

👑 SEE ALSO 👑

• Kernel file ./drivers/gpio/gpiolib-cdev.c
• struct linehandle_state(9)
• struct line(9)
• struct linereq(9)
• struct lineevent_state(9)
• gpio_chrdev_release(9)

fr fr go read those if you want the whole lore, this page is just the opening act 🫶

and that's the whole vibe check, bestie 🌈 this iconic little page came from ./drivers/gpio and it's dated October 2026 — so like, mark your calendar 📅🔥 gpio_chrdev_open(9) ate and left no crumbs 💀💖