v4l2_m2m_prepare_buf  529 drivers/media/v4l2-core/v4l2-mem2mem.c EXPORT_SYMBOL_GPL(v4l2_m2m_prepare_buf);
v4l2_m2m_prepare_buf 1097 drivers/media/v4l2-core/v4l2-mem2mem.c 	return v4l2_m2m_prepare_buf(file, fh->m2m_ctx, buf);
v4l2_m2m_prepare_buf  234 include/media/v4l2-mem2mem.h int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,