v4l2_fh_init(9)

💅 v4l2_fh_init(9) — Kernel API Manual, but make it cute ✨

okay so bestie, welcome to the Kernel API Manual page for v4l2_fh_init(9) — this is the little setup function for a V4L2 file handle, and it’s genuinely important. 🎀

✨ NAME ✨

v4l2_fh_init — initialise the file handle. 💖

🎀 SYNOPSIS 🎀

void v4l2_fh_init (struct v4l2_fh *fh , struct video_device *vdev );

🦋 ARGUMENTS 🦋

• fh — pointer to struct v4l2_fh, aka the file handle in question. 🫶
• vdev — pointer to struct video_device, the video device side of things. ✨

💖 DESCRIPTION 💖

okay so the parts of the V4L2 framework that use the file handles should be initialised in this function. That’s the whole vibe. 🌸

and listen: if your driver uses struct v4l2_fh, you must call this from your driver’s v4l2_file_operations->open handler. no cap, that’s mandatory. 💅

👑 SEE ALSO 👑

go read these too, bestie — they’re all part of the same little ecosystem:

• Kernel file ./include/media/v4l2-fh.h
• struct v4l2_fh(9)
• file_to_v4l2_fh(9)
• v4l2_fh_add(9)
• v4l2_fh_open(9)
• v4l2_fh_del(9)
• v4l2_fh_exit(9)
• v4l2_fh_release(9)
• v4l2_fh_is_singular(9)
• v4l2_fh_is_singular_file(9)

and that’s the whole page, babe — signed off by the ./include/media source crew, October 2026 edition, all about v4l2_fh_init(9) 💖✨👑