S5K5BAG_FW_TAG_LEN
if (count < S5K5BAG_FW_TAG_LEN + 1) {
ret = memcmp(data, S5K5BAF_FW_TAG, S5K5BAG_FW_TAG_LEN * sizeof(u16));
data += S5K5BAG_FW_TAG_LEN;
count -= S5K5BAG_FW_TAG_LEN;
f->count, 2 * (count + S5K5BAG_FW_TAG_LEN));