iio_chrdev_release(9)

💖 iio_chrdev_release(9) 💖

okay bestie, welcome to the Kernel API Manual entry for iio_chrdev_release(9) — yes that's the header, yes I'm folding it in, and yes we're gonna get through this together 🫶

---

✨ NAME ✨

iio_chrdev_release — the chrdev file close situation, aka it handles the buffer access and the ioctls when a char device file gets closed 💅

---

🌸 SYNOPSIS 🌸

int iio_chrdev_release (struct inode *inode , struct file *filp );

that's it. that's the whole signature. she's short and she's iconic 👑

---

🎀 ARGUMENTS 🎀

• inode — a pointer to the inode structure for the char device. literally just the inode, nothing dramatic 🦋
• filp — a pointer to the file structure for the char device. also exactly what it sounds like 💜

---

⭐ RETURN ⭐

returns 0 for a successful release. that's the whole vibe check and she passes ✅

---

🔥 SEE ALSO 🔥

okay this is the part where I need you to stay with me, because the list is long and every single one of these is a real reference, no cap 🫡

kernel file ./drivers/iio/industrialio-core.c — that's where the main character lives 💅

• iio_device_id(9)
• iio_buffer_enabled(9)
• iio_find_channel_from_si(9)
• iio_device_set_clock(9)
• iio_device_get_clock(9)
• iio_get_time_ns(9)
• iio_read_mount_matrix(9)
• iio_format_value(9)
• __iio_str_to_fixpoint(9)
• iio_str_to_fixpoint(9)
• iio_free_chan_devattr_list(9)
• iio_device_alloc(9)
• iio_device_free(9)
• devm_iio_device_alloc(9)
• iio_chrdev_open(9)
• iio_active_scan_mask_index(9)
• iio_device_unregister(9)
• __iio_dev_mode_lock(9)
• __iio_dev_mode_unlock(9)
• iio_device_get_current_mode(9)

ngl bestie, that's a whole friend group and you should probably meet all of them. periodt 💀

---

and that's the page!! source/version is the Kernel API Manual, the source sits in ./drivers/iio, and the date on this beauty is October 2026 — mwah, catch you in the next iio_chrdev_release(9) re-read 🌈💖🎀