v4l2_prio_check(9)

🌸 v4l2_prio_check(9) — like, the Kernel API Manual page, bestie 🌸

okay so real talk, this one comes straight out of the Kernel API Manual and it's a tiny little function with main character energy — it's the priority logic gatekeeper for when a file handler closes. slay.

---

✨ NAME ✨

v4l2_prio_check — she implements the priority logic for a file handler close. that's it, that's the job 💅

---

🎀 SYNOPSIS 🎀

int v4l2_prio_check (struct v4l2_prio_state *global , enum v4l2_priority
local );

look at her go ✨

---

🦋 ARGUMENTS 🦋

• global — a pointer to the struct v4l2_prio_state of the device node. iykyk 🫶
• local — the desired priority, as defined by enum v4l2_priority local. yes the type name literally repeats the arg name, that's just how it is here 😭

---

💜 DESCRIPTION 💜

NOTE: this function should be used only by the V4L2 core. like, only only. not you, not your driver, not your friend's driver. the V4L2 core. periodt 🔥

---

🌈 SEE ALSO 🌈

Kernel file ./include/media/v4l2-dev.h — and literally the whole squad shows up here, no cap:

• enum vfl_devnode_type(9)
• enum vfl_devnode_direction(9)
• enum v4l2_video_device_flags(9)
• struct v4l2_prio_state(9)
• v4l2_prio_init(9)
• v4l2_prio_change(9)
• v4l2_prio_open(9)
• v4l2_prio_close(9)
• v4l2_prio_max(9)
• struct v4l2_file_operations(9)
• struct video_device(9)
• media_entity_to_video_device(9)
• to_video_device(9)
• __video_register_device(9)
• video_register_device(9)
• video_register_device_no_warn(9)
• video_unregister_device(9)
• video_device_alloc(9)
• video_device_release(9)
• video_device_release_empty(9)
• v4l2_disable_ioctl(9)
• video_get_drvdata(9)
• video_set_drvdata(9)
• video_devdata(9)
• video_drvdata(9)
• video_device_node_name(9)
• video_is_registered(9)
• v4l2_debugfs_root(9)
• video_device_pipeline_start(9)
• __video_device_pipeline_start(9)
• video_device_pipeline_stop(9)
• __video_device_pipeline_stop(9)
• video_device_pipeline_alloc_start(9)
• video_device_pipeline(9)

---

that's the whole entire page, bestie — short, sweet, and lowkey iconic 🍓

and for the cute sign-off: this one lives at ./include/media, stamped October 2026, under v4l2_prio_check(9) 💖 go forth and don't call it outside the V4L2 core, mwah 🧚✨