v4l2_m2m_next_buf
EXPORT_SYMBOL_GPL(v4l2_m2m_next_buf);
struct vb2_v4l2_buffer *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx);
return v4l2_m2m_next_buf(&m2m_ctx->out_q_ctx);
return v4l2_m2m_next_buf(&m2m_ctx->cap_q_ctx);