v4l2_m2m_ctx_release(9)

💅 v4l2_m2m_ctx_release(9) — Kernel API Manual 🎀

okay so bestie, welcome to the kernel API manual, specifically the page for v4l2_m2m_ctx_release(9). pull up a chair, grab a strawberry drink 🍓, and let's get into it.

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✨ NAME ✨

v4l2_m2m_ctx_release — release m2m context

like, it releases the m2m context. that's the whole vibe. clean, simple, iconic 👑

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🌸 SYNOPSIS 🌸

void v4l2_m2m_ctx_release (struct v4l2_m2m_ctx *m2m_ctx );

note the void — this function does not hand anything back to you, it just does the thing and dips 💨

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🦋 ARGUMENTS 🦋

• m2m_ctx — the m2m context assigned to the instance, given to you as a struct v4l2_m2m_ctx. this is the little guy you're letting go of 🫶

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💜 DESCRIPTION 💜

Usually called from the driver's release function.

that's it, that's the tea ☕ — it's the cleanup girlie. your driver's release function is like "okay bestie we're done here" and this is the function it calls to actually let that context go. no cap, that's the whole job.

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🔥 SEE ALSO 🔥

the kernel file ./include/media/v4l2-mem2mem.h plus this whole friend group of functions and structs — they all say hi 👋 (each one is a page reference, .9 and all, kept exactly as-is):

• struct v4l2_m2m_ops(9)
• struct v4l2_m2m_queue_ctx(9)
• struct v4l2_m2m_ctx(9)
• struct v4l2_m2m_buffer(9)
• v4l2_m2m_get_curr_priv(9)
• v4l2_m2m_get_vq(9)
• v4l2_m2m_try_schedule(9)
• v4l2_m2m_job_finish(9)
• v4l2_m2m_buf_done_and_job_finish(9)
• v4l2_m2m_clear_state(9)
• v4l2_m2m_mark_stopped(9)
• v4l2_m2m_dst_buf_is_last(9)
• v4l2_m2m_has_stopped(9)
• v4l2_m2m_is_last_draining_src_buf(9)
• v4l2_m2m_last_buffer_done(9)
• v4l2_m2m_suspend(9)
• v4l2_m2m_resume(9)
• v4l2_m2m_reqbufs(9)
• v4l2_m2m_querybuf(9)
• v4l2_m2m_qbuf(9)
• v4l2_m2m_dqbuf(9)
• v4l2_m2m_prepare_buf(9)
• v4l2_m2m_create_bufs(9)
• v4l2_m2m_expbuf(9)
• v4l2_m2m_streamon(9)
• v4l2_m2m_streamoff(9)
• v4l2_m2m_update_start_streaming_state(9)
• v4l2_m2m_update_stop_streaming_state(9)
• v4l2_m2m_encoder_cmd(9)
• v4l2_m2m_decoder_cmd(9)
• v4l2_m2m_poll(9)
• v4l2_m2m_mmap(9)
• v4l2_m2m_init(9)
• v4l2_m2m_release(9)
• v4l2_m2m_get(9)
• v4l2_m2m_put(9)
• v4l2_m2m_ctx_init(9)
• v4l2_m2m_buf_queue(9)
• v4l2_m2m_num_src_bufs_ready(9)
• v4l2_m2m_num_dst_bufs_ready(9)
• v4l2_m2m_next_buf(9)
• v4l2_m2m_next_src_buf(9)
• v4l2_m2m_next_dst_buf(9)
• v4l2_m2m_last_buf(9)
• v4l2_m2m_last_src_buf(9)
• v4l2_m2m_last_dst_buf(9)
• v4l2_m2m_for_each_dst_buf(9)
• v4l2_m2m_for_each_src_buf(9)
• v4l2_m2m_for_each_dst_buf_safe(9)
• v4l2_m2m_for_each_src_buf_safe(9)
• v4l2_m2m_get_src_vq(9)
• v4l2_m2m_get_dst_vq(9)
• v4l2_m2m_buf_remove(9)
• v4l2_m2m_src_buf_remove(9)
• v4l2_m2m_dst_buf_remove(9)
• v4l2_m2m_buf_remove_by_buf(9)
• v4l2_m2m_src_buf_remove_by_buf(9)
• v4l2_m2m_dst_buf_remove_by_buf(9)
• v4l2_m2m_buf_copy_metadata(9)

like, that's the whole group chat right there 😭 every single one accounted for, not one left on read 💅

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okay and finally, the cute sign-off: this page lives in the source dir ./include/media, and it's dated October 2026. and yes, the page is still called v4l2_m2m_ctx_release(9) — main character energy from start to finish 👑✨ bye bestie, go release that context responsibly 🫶