x86, documentation: nmi_watchdog=2 works on x86_64

[cascardo/linux.git] / crypto / xcbc.c

diff --git a/crypto/xcbc.c b/crypto/xcbc.c
index a82959d..2feb0f2 100644 (file)
--- a/crypto/xcbc.c
+++ b/crypto/xcbc.c
@@ -124,6 +124,11 @@ static int crypto_xcbc_digest_update2(struct hash_desc *pdesc,
                unsigned int offset = sg[i].offset;
                unsigned int slen = sg[i].length;
 
+               if (unlikely(slen > nbytes))
+                       slen = nbytes;
+
+               nbytes -= slen;
+
                while (slen > 0) {
                        unsigned int len = min(slen, ((unsigned int)(PAGE_SIZE)) - offset);
                        char *p = crypto_kmap(pg, 0) + offset;
@@ -177,7 +182,6 @@ static int crypto_xcbc_digest_update2(struct hash_desc *pdesc,
                        offset = 0;
                        pg++;
                }
-               nbytes-=sg[i].length;
                i++;
        } while (nbytes>0);
 
@@ -301,7 +305,7 @@ static struct crypto_instance *xcbc_alloc(struct rtattr **tb)
        alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
                                  CRYPTO_ALG_TYPE_MASK);
        if (IS_ERR(alg))
-               return ERR_PTR(PTR_ERR(alg));
+               return ERR_CAST(alg);
 
        switch(alg->cra_blocksize) {
        case 16: