v4l2_m2m_put(9)

💅 v4l2_m2m_put(9) — the Kernel API Manual, bestie edition 🎀

okay so quick vibe check: this is the v4l2_m2m_put(9) page from the Kernel API Manual, and it's literally about letting go of a reference to the m2m_dev structure. lowkey iconic behaviour. 🦋

✨ NAME ✨

v4l2_m2m_put — remove a reference to the m2m_dev structure 🫶

🌸 SYNOPSIS 🌸

void v4l2_m2m_put (struct v4l2_m2m_dev *m2m_dev );

💖 ARGUMENTS 💖

• m2m_dev — an opaque pointer to the internal data that handles the M2M context. it's giving "don't ask what's inside, just pass it along" energy 🙈

👑 DESCRIPTION 👑

so here's the tea, bestie: once the M2M device has, like, no more references left, v4l2_m2m_release gets called automatically. the kernel handles it. you do not. periodt.

⚠️ real talk — if you're using this method, you should never call v4l2_m2m_release directly. like, don't even think about it. that's not your job, that's the reference counter's job 💀

want the full lore? check out v4l2_m2m_get for more details. it's basically the other half of this whole situationship ✨

🌈 SEE ALSO 🌈

• Kernel file ./include/media/v4l2-mem2mem.h 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_ctx_init(9)
• v4l2_m2m_ctx_release(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)

and that's the whole page, bestie, you ate that 🍓 ngl this one lives in ./include/media and it's dated October 2026, tagged v4l2_m2m_put(9) — so go forth and put responsibly 💜✨