v4l2_prio_change(9)

💅 v4l2_prio_change(9) — the Kernel API Manual, bestie edition 🎀

okay so bestie, buckle up, because this one lives in the Kernel API Manual and it's about changing the priority of a v4l2 file handler. yes that's the whole vibe. it's short, it's sweet, it's giving "internal helper that knows its place" ✨

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✨ NAME ✨

v4l2_prio_change — changes the v4l2 file handler priority 💅

like, that's it. that's the job. it changes the priority. no cap.

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🌸 SYNOPSIS 🌸

int v4l2_prio_change (struct v4l2_prio_state *global , enum
v4l2_priority *local , enum v4l2_priority new );

look at her. three args, one int coming back at you, absolutely iconic 😌

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🦋 ARGUMENTS 🦋

• global — pointer to the struct v4l2_prio_state of the device node. that's the big-picture priority state, the main character of the device node fr fr 👑
• local — pointer to the desired priority, as defined by enum v4l2_priority. yes, a pointer to the desired one. she's specific like that 💖
• new — Priority type requested, as defined by enum v4l2_priority. this is the new priority you're asking for, straight up, no games 🎀

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💀 DESCRIPTION 💀

NOTE: This function should be used only by the V4L2 core.

and we mean it!! 🙈 this is not a "hey maybe try it and see" situation. it's core-only. if you're not the V4L2 core, bestie, this is not your function. step away from the v4l2_prio_change. it's iykyk and you (probably) don't, and that's okay 🫶

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🌈 SEE ALSO 🌈

the whole friend group, in the order they showed up to the group chat 💜

Kernel file ./include/media/v4l2-dev.h 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_open(9), v4l2_prio_close(9), v4l2_prio_max(9), v4l2_prio_check(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)

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okay mwah, that's the whole page 🍓 this little beauty ships from ./include/media, dated October 2026, and it's part of the Kernel API Manual — slay, stay hydrated, and only call this from the V4L2 core, periodt 💖✨🧚