u8 i = 0, checksum = 0;  dprintk(verbose, DST_CA_DEBUG, 1, " ========================= Checksum calculation ==========================="); dprintk(verbose, DST_CA_DEBUG, 1, " String Length=[0x%02x]", length); dprintk(verbose, DST_CA_DEBUG, 1, " String=[");  while (i < length) { dprintk(verbose, DST_CA_DEBUG, 0, " %02x", check_string[i]); checksum += check_string[i]; i++; } dprintk(verbose, DST_CA_DEBUG, 0, " ]\n"); dprintk(verbose, DST_CA_DEBUG, 1, "Sum=[%02x]\n", checksum); check_string[length] = ~checksum + 1; dprintk(verbose, DST_CA_DEBUG, 1, " Checksum=[%02x]", check_string[length]); dprintk(verbose, DST_CA_DEBUG, 1, " ==========================================================================");  return 0;
dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum."); dprintk(verbose, DST_CA_DEBUG, 1, "  -> string length : 0x%02x", length); check_string[length] = dst_check_sum (check_string, length); dprintk(verbose, DST_CA_DEBUG, 1, "  -> checksum      : 0x%02x", check_string[length]);
static int put_checksum(u8 *check_string, int length){	u8 i = 0, checksum = 0;	dprintk(verbose, DST_CA_DEBUG, 1, " ========================= Checksum calculation ===========================");	dprintk(verbose, DST_CA_DEBUG, 1, " String Length=[0x%02x]", length);	dprintk(verbose, DST_CA_DEBUG, 1, " String=[");	while (i < length) {		dprintk(verbose, DST_CA_DEBUG, 0, " %02x", check_string[i]);		checksum += check_string[i];		i++;	}	dprintk(verbose, DST_CA_DEBUG, 0, " ]\n");	dprintk(verbose, DST_CA_DEBUG, 1, "Sum=[%02x]\n", checksum);	check_string[length] = ~checksum + 1;	dprintk(verbose, DST_CA_DEBUG, 1, " Checksum=[%02x]", check_string[length]);	dprintk(verbose, DST_CA_DEBUG, 1, " ==========================================================================");	return 0;}