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    Subject[PATCH 3.19.y-ckt 018/102] crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer
    Date
    3.19.8-ckt7 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Herbert Xu <herbert@gondor.apana.org.au>

    commit f898c522f0e9ac9f3177d0762b76e2ab2d2cf9c0 upstream.

    This patch removes a bogus BUG_ON in the ablkcipher path that
    triggers when the destination buffer is different from the source
    buffer and is scattered.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    drivers/crypto/ixp4xx_crypto.c | 1 -
    1 file changed, 1 deletion(-)

    diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
    index f757a0f..3beed38 100644
    --- a/drivers/crypto/ixp4xx_crypto.c
    +++ b/drivers/crypto/ixp4xx_crypto.c
    @@ -904,7 +904,6 @@ static int ablk_perform(struct ablkcipher_request *req, int encrypt)
    crypt->mode |= NPE_OP_NOT_IN_PLACE;
    /* This was never tested by Intel
    * for more than one dst buffer, I think. */
    - BUG_ON(req->dst->length < nbytes);
    req_ctx->dst = NULL;
    if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook,
    flags, DMA_FROM_DEVICE))
    --
    1.9.1


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