COMP_HDR_LEN
memcpy(mptr, word + COMP_HDR_LEN, length);
(word + COMP_HDR_LEN), length);
if (!read(ah, cptr, word, COMP_HDR_LEN))
cptr -= COMP_HDR_LEN;
read(ah, cptr, word, COMP_HDR_LEN + osize + COMP_CKSUM_LEN);
checksum = ar9300_comp_cksum(&word[COMP_HDR_LEN], length);
mchecksum = get_unaligned_le16(&word[COMP_HDR_LEN + osize]);
cptr -= (COMP_HDR_LEN + osize + COMP_CKSUM_LEN);