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    SubjectRe: [PATCH v5 1/2] platform: Add driver for RAVE Supervisory Processor
    Hi Andrey,

    [auto build test ERROR on linus/master]
    [also build test ERROR on v4.13-rc2 next-20170728]
    [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

    url: https://github.com/0day-ci/linux/commits/Andrey-Smirnov/ZII-RAVE-platform-driver/20170729-210238
    config: blackfin-allyesconfig (attached as .config)
    compiler: bfin-uclinux-gcc (GCC) 6.2.0
    reproduce:
    wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
    chmod +x ~/bin/make.cross
    # save the attached .config to linux build tree
    make.cross ARCH=blackfin

    All errors (new ones prefixed by >>):

    drivers/platform/rave/rave-sp.c: In function 'csum_ccitt':
    drivers/platform/rave/rave-sp.c:458:25: error: implicit declaration of function 'crc_ccitt_false' [-Werror=implicit-function-declaration]
    const u16 calculated = crc_ccitt_false(0xffff, buf, size);
    ^~~~~~~~~~~~~~~
    drivers/platform/rave/rave-sp.c: In function 'rave_sp_write':
    >> drivers/platform/rave/rave-sp.c:495:11: error: 'ENOME' undeclared (first use in this function)
    return -ENOME;
    ^~~~~
    drivers/platform/rave/rave-sp.c:495:11: note: each undeclared identifier is reported only once for each function it appears in
    cc1: some warnings being treated as errors

    vim +/ENOME +495 drivers/platform/rave/rave-sp.c

    455
    456 static void csum_ccitt(const u8 *buf, size_t size, u8 *crc)
    457 {
    > 458 const u16 calculated = crc_ccitt_false(0xffff, buf, size);
    459
    460 /*
    461 * While the rest of the wire protocol is little-endian,
    462 * CCITT-16 CRC in RDU2 device is sent out in big-endian order.
    463 */
    464 put_unaligned_be16(calculated, crc);
    465 }
    466
    467 static void *stuff(unsigned char *dest, const unsigned char *src, size_t n)
    468 {
    469 while (n--) {
    470 const unsigned char byte = *src++;
    471
    472 switch (byte) {
    473 case RAVE_SP_STX:
    474 case RAVE_SP_ETX:
    475 case RAVE_SP_DLE:
    476 *dest++ = RAVE_SP_DLE;
    477 /* FALLTHROUGH */
    478 default:
    479 *dest++ = byte;
    480 }
    481 }
    482
    483 return dest;
    484 }
    485
    486 static int rave_sp_write(struct rave_sp *sp, const u8 *data, u8 data_size)
    487 {
    488 const size_t checksum_length = sp->variant->checksum->length;
    489 unsigned char frame[RAVE_SP_TX_BUFFER_SIZE];
    490 unsigned char crc[RAVE_SP_CHECKSUM_SIZE];
    491 unsigned char *dest = frame;
    492 size_t length;
    493
    494 if (WARN_ON(checksum_length > sizeof(crc)))
    > 495 return -ENOME;
    496
    497 if (WARN_ON(data_size > sizeof(frame)))
    498 return -ENOMEM;
    499
    500 sp->variant->checksum->subroutine(data, data_size, crc);
    501
    502 *dest++ = RAVE_SP_STX;
    503 dest = stuff(dest, data, data_size);
    504 dest = stuff(dest, crc, checksum_length);
    505 *dest++ = RAVE_SP_ETX;
    506
    507 length = dest - frame;
    508
    509 print_hex_dump(KERN_DEBUG, "rave-sp tx: ", DUMP_PREFIX_NONE,
    510 16, 1, frame, length, false);
    511
    512 return serdev_device_write(sp->serdev, frame, length, HZ);
    513 }
    514

    ---
    0-DAY kernel test infrastructure Open Source Technology Center
    https://lists.01.org/pipermail/kbuild-all Intel Corporation
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