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    Subject[PATCH 17/29] mtd: rename random32() to prandom_u32()
    Date
    Use more preferable function name which implies using a pseudo-random
    number generator.

    Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
    Cc: David Woodhouse <dwmw2@infradead.org>
    Cc: Artem Bityutskiy <dedekind1@gmail.com>
    Cc: linux-mtd@lists.infradead.org
    ---
    drivers/mtd/nand/nandsim.c | 6 +++---
    drivers/mtd/tests/mtd_nandecctest.c | 10 +++++-----
    drivers/mtd/tests/mtd_stresstest.c | 8 ++++----
    drivers/mtd/ubi/debug.h | 6 +++---
    4 files changed, 15 insertions(+), 15 deletions(-)

    diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
    index 818b65c..4c31798 100644
    --- a/drivers/mtd/nand/nandsim.c
    +++ b/drivers/mtd/nand/nandsim.c
    @@ -1476,12 +1476,12 @@ int do_read_error(struct nandsim *ns, int num)

    void do_bit_flips(struct nandsim *ns, int num)
    {
    - if (bitflips && random32() < (1 << 22)) {
    + if (bitflips && prandom_u32() < (1 << 22)) {
    int flips = 1;
    if (bitflips > 1)
    - flips = (random32() % (int) bitflips) + 1;
    + flips = (prandom_u32() % (int) bitflips) + 1;
    while (flips--) {
    - int pos = random32() % (num * 8);
    + int pos = prandom_u32() % (num * 8);
    ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
    NS_WARN("read_page: flipping bit %d in page %d "
    "reading from %d ecc: corrected=%u failed=%u\n",
    diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
    index ceb261f..2e6b41e 100644
    --- a/drivers/mtd/tests/mtd_nandecctest.c
    +++ b/drivers/mtd/tests/mtd_nandecctest.c
    @@ -43,7 +43,7 @@ struct nand_ecc_test {
    static void single_bit_error_data(void *error_data, void *correct_data,
    size_t size)
    {
    - unsigned int offset = random32() % (size * BITS_PER_BYTE);
    + unsigned int offset = prandom_u32() % (size * BITS_PER_BYTE);

    memcpy(error_data, correct_data, size);
    __change_bit_le(offset, error_data);
    @@ -54,9 +54,9 @@ static void double_bit_error_data(void *error_data, void *correct_data,
    {
    unsigned int offset[2];

    - offset[0] = random32() % (size * BITS_PER_BYTE);
    + offset[0] = prandom_u32() % (size * BITS_PER_BYTE);
    do {
    - offset[1] = random32() % (size * BITS_PER_BYTE);
    + offset[1] = prandom_u32() % (size * BITS_PER_BYTE);
    } while (offset[0] == offset[1]);

    memcpy(error_data, correct_data, size);
    @@ -67,7 +67,7 @@ static void double_bit_error_data(void *error_data, void *correct_data,

    static unsigned int random_ecc_bit(size_t size)
    {
    - unsigned int offset = random32() % (3 * BITS_PER_BYTE);
    + unsigned int offset = prandom_u32() % (3 * BITS_PER_BYTE);

    if (size == 256) {
    /*
    @@ -75,7 +75,7 @@ static unsigned int random_ecc_bit(size_t size)
    * and 17th bit) in ECC code for 256 byte data block
    */
    while (offset == 16 || offset == 17)
    - offset = random32() % (3 * BITS_PER_BYTE);
    + offset = prandom_u32() % (3 * BITS_PER_BYTE);
    }

    return offset;
    diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c
    index dc89e32..4e9fc1f 100644
    --- a/drivers/mtd/tests/mtd_stresstest.c
    +++ b/drivers/mtd/tests/mtd_stresstest.c
    @@ -57,7 +57,7 @@ static int rand_eb(void)
    unsigned int eb;

    again:
    - eb = random32();
    + eb = prandom_u32();
    /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
    eb %= (ebcnt - 1);
    if (bbt[eb])
    @@ -69,7 +69,7 @@ static int rand_offs(void)
    {
    unsigned int offs;

    - offs = random32();
    + offs = prandom_u32();
    offs %= bufsize;
    return offs;
    }
    @@ -78,7 +78,7 @@ static int rand_len(int offs)
    {
    unsigned int len;

    - len = random32();
    + len = prandom_u32();
    len %= (bufsize - offs);
    return len;
    }
    @@ -148,7 +148,7 @@ static int do_write(void)

    static int do_operation(void)
    {
    - if (random32() & 1)
    + if (prandom_u32() & 1)
    return do_read();
    else
    return do_write();
    diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
    index 33f8f3b..cba89fc 100644
    --- a/drivers/mtd/ubi/debug.h
    +++ b/drivers/mtd/ubi/debug.h
    @@ -86,7 +86,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
    static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
    {
    if (ubi->dbg.emulate_bitflips)
    - return !(random32() % 200);
    + return !(prandom_u32() % 200);
    return 0;
    }

    @@ -100,7 +100,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
    static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
    {
    if (ubi->dbg.emulate_io_failures)
    - return !(random32() % 500);
    + return !(prandom_u32() % 500);
    return 0;
    }

    @@ -114,7 +114,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
    static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
    {
    if (ubi->dbg.emulate_io_failures)
    - return !(random32() % 400);
    + return !(prandom_u32() % 400);
    return 0;
    }

    --
    1.7.11.7


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