linux-imx

}

​

static int salsa20_crypt(struct skcipher_request *req)

{

    struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);

    const struct salsa20_ctx *ctx = crypto_skcipher_ctx(tfm);

    struct skcipher_walk walk;

    u32 state[16];

    int err;

​

​

    salsa20_init(state, ctx, walk.iv);

​

    while (walk.nbytes > 0) {

        unsigned int nbytes = walk.nbytes;

​

        if (nbytes < walk.total)

            nbytes = round_down(nbytes, walk.stride);

​

        salsa20_docrypt(state, walk.dst.virt.addr, walk.src.virt.addr,