v4l2_ctrl_handler_free(9)

📦 version 7.3.1, in nixpkgs unstable

💅 v4l2_ctrl_handler_free(9) 💅

okay bestie, welcome to the Kernel API Manual — yes that's the vibe, we're in kernel land now, and this one is genuinely so satisfying. it's the cleanup girlie. the one that frees everything. ✨

🌸 NAME 🌸

v4l2_ctrl_handler_free — frees, like, all the controls owned by the handler and the control list itself. full send cleanup, no leftovers, periodt. 🧹💖

✨ SYNOPSIS ✨

int v4l2_ctrl_handler_free (struct v4l2_ctrl_handler *hdl );

like yes that's literally the whole thing, she's a short queen 👑

🎀 ARGUMENTS 🎀

  • hdl — the control handler. your handler. the one you're about to set free 🦋

💅 DESCRIPTION 💅

does nothing if hdl == NULL.

that's it. that's the whole function. she checks if you handed her nothing, and she just... doesn't. iconic behaviour honestly, no crash, no drama, no cap. 🙈

⭐ RETURN ⭐

returns hdl's error field, or 0 if hdl is NULL.

so if you're checking for success, bestie, remember that NULL handler = 0 = all good. it's giving forgiving. 🫶

🔥 SEE ALSO 🔥

okay this list is long long, so buckle up, we're going on a journey through the entire v4l2 controls cinematic universe. the kernel file is ./include/media/v4l2-ctrls.h and here's every single sibling:

lowkey read them all, bestie, the whole family ate 💀🔥

and that's the page!! mwah 💋 this gorgeous little doc lives in ./include/media and it's dated October 2026, filed under v4l2_ctrl_handler_free(9). go free your controls, queen 👑🌈💜

📦 where this page comes from