v4l2_event_wake_all(9)

💖 NAME 💖

v4l2_event_wake_all — okay bestie, this one wakes all the filehandles. That's literally it. All of them. Every single one. no cap 🫶

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✨ SYNOPSIS ✨

void v4l2_event_wake_all (struct video_device *vdev );

It returns void, so like… it gives you nothing back. No return value, no drama, no crumbs. It just does the thing 💅

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🎀 ARGUMENTS 🎀

• vdev — pointer to struct video_device. That's your whole personality for this function, honestly. It's the only thing you pass in ✨

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🦋 DESCRIPTION 🦋

So here's the tea: this is what you hit up when you're unregistering a video device. That's the moment. That's the vibe check. You call v4l2_event_wake_all and it wakes all the filehandles. 🌸

Like, all of them. Not some. Not the ones you feel like. All. 🔥

fr fr, the entire "when do I use this" story is "unregistering a video device" — the manpage said it in one line and honestly? iconic. brevityate. 👑

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🌈 SEE ALSO 🌈

The kernel file lives at ./include/media/v4l2-event.h — go be nosy, iykyk 💜

• struct v4l2_kevent(9)
• struct v4l2_subscribed_event_ops(9)
• struct v4l2_subscribed_event(9)
• v4l2_event_dequeue(9)
• v4l2_event_queue(9)
• v4l2_event_queue_fh(9)
• v4l2_event_pending(9)
• v4l2_event_subscribe(9)
• v4l2_event_unsubscribe(9)
• v4l2_event_unsubscribe_all(9)
• v4l2_event_subdev_unsubscribe(9)
• v4l2_src_change_event_subscribe(9)
• v4l2_src_change_event_subdev_subscribe(9)

That's the whole friend group right there — go say hi to every last one of them 🧚💖

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okay that's the page!! it's from ./include/media, dated October 2026, and the version tag on the bottom of the original is literally v4l2_event_wake_all(9) again — cute little signature, love that for us. mwah, study hard, and don't forget to wake all your filehandles before you dip 💅✨🎀