decompress_method
if (decompress_method((unsigned char *)initrd_start, 8, NULL))
decompress_method((unsigned char *)(&buf), 8, NULL)) {
decompress_fn decompress_method(const unsigned char *inbuf, long len,
*decompressor = decompress_method(buf, size, &compress_name);
decompress = decompress_method(buf, len, &compress_name);