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    Subject[PATCH v2 2/8] crypto: amcc replace get_sg_count by sg_nents_for_len
    Date
    The get_sg_count function of amcc is the same as sg_nents_for_len from
    lib/scatterlist.c

    Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
    ---
    drivers/crypto/amcc/crypto4xx_core.c | 22 +---------------------
    1 file changed, 1 insertion(+), 21 deletions(-)

    diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c
    index 192a8fa..27288fc 100644
    --- a/drivers/crypto/amcc/crypto4xx_core.c
    +++ b/drivers/crypto/amcc/crypto4xx_core.c
    @@ -740,26 +740,6 @@ void crypto4xx_return_pd(struct crypto4xx_device *dev,
    pd_uinfo->state = PD_ENTRY_FREE;
    }

    -/*
    - * derive number of elements in scatterlist
    - * Shamlessly copy from talitos.c
    - */
    -static int get_sg_count(struct scatterlist *sg_list, int nbytes)
    -{
    - struct scatterlist *sg = sg_list;
    - int sg_nents = 0;
    -
    - while (nbytes) {
    - sg_nents++;
    - if (sg->length > nbytes)
    - break;
    - nbytes -= sg->length;
    - sg = sg_next(sg);
    - }
    -
    - return sg_nents;
    -}
    -
    static u32 get_next_gd(u32 current)
    {
    if (current != PPC4XX_LAST_GD)
    @@ -800,7 +780,7 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req,
    u32 gd_idx = 0;

    /* figure how many gd is needed */
    - num_gd = get_sg_count(src, datalen);
    + num_gd = sg_nents_for_len(src, datalen);
    if (num_gd == 1)
    num_gd = 0;

    --
    2.4.6


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