get_index(9)

okay bestie, welcome to get_index(9) from the Kernel API Manual — stream index numbers, but make it cute 💅✨

🌸 NAME 🌸

get_index — assign stream index number based on v4l2_dev.

✨ SYNOPSIS ✨

int get_index (struct video_device *vdev );

🎀 ARGUMENTS 🎀

• vdev — the video_device to assign index number to; vdev->v4l2_dev should be assigned.

💅 DESCRIPTION 💅

Quick note, bestie: when this is called, the new device has not yet been registered in the video_device array — but it was able to obtain a minor number. No cap.

That means we can always obtain a free stream index number, since the worst case scenario is that there are VIDEO_NUM_DEVICES - 1 slots in use of the video_device array. Literally the math is mathing 💖

It returns a free index number. Periodt.

🦋 SEE ALSO 🦋

• Kernel file ./drivers/media/v4l2-core/v4l2-dev.c
• video_unregister_device(9)

That's the whole vibe for now — source/version ./drivers/media/v4l2-core, dated October 2026, signing off as get_index(9) 🫶💜