video_unregister_device(9)

💅 video_unregister_device(9) — like, the Kernel API Manual page, bestie ✨

okay so real talk, this is a page from the Kernel API Manual section (you know, the (9) girlies) and it's about telling the kernel "we're done here" for a video device 🎀

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🌸 NAME 🌸

video_unregister_device — unregister video devices, periodt.

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✨ SYNOPSIS ✨

void video_unregister_device (struct video_device *vdev );

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🫶 ARGUMENTS 🫶

• vdev — the struct video_device to register 👀 (yes that's what the page says, we're just reading it back to you fr fr)

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💖 DESCRIPTION 💖

So here's the vibe: this function does absolutely nothing in two very specific situations, and you need to know them:

• if vdev == NULL → it just… doesn't. nothing. nada. 💀
• if video_is_registered returns false → same energy, it does nothing.

Otherwise it does the unregister thing. That's the whole tea. 🍵

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🔥 SEE ALSO 🔥

okay this list is long but we do not skip a single one, because everyone here is iconic in their own right 👑

• 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_change(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_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)

like I said. everyone. no cuts. 🌈

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and that's the whole page, bestie 🦋

cute lil sign-off for the credits stans: this one lives in ./include/media, and the version timestamp is October 2026 — screenshot it, cite it, love it 💜🧚‍♀️