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-rw-r--r--security/keys/trusted_defined.c30
1 files changed, 13 insertions, 17 deletions
diff --git a/security/keys/trusted_defined.c b/security/keys/trusted_defined.c
index f7d06776faf0..2836c6dc18a3 100644
--- a/security/keys/trusted_defined.c
+++ b/security/keys/trusted_defined.c
@@ -150,17 +150,15 @@ static int TSS_authhmac(unsigned char *digest, const unsigned char *key,
data = va_arg(argp, unsigned char *);
if (!data) {
ret = -EINVAL;
- va_end(argp);
- goto out;
+ break;
}
ret = crypto_shash_update(&sdesc->shash, data, dlen);
- if (ret < 0) {
- va_end(argp);
- goto out;
- }
+ if (ret < 0)
+ break;
}
va_end(argp);
- ret = crypto_shash_final(&sdesc->shash, paramdigest);
+ if (!ret)
+ ret = crypto_shash_final(&sdesc->shash, paramdigest);
if (!ret)
ret = TSS_rawhmac(digest, key, keylen, SHA1_DIGEST_SIZE,
paramdigest, TPM_NONCE_SIZE, h1,
@@ -229,13 +227,12 @@ static int TSS_checkhmac1(unsigned char *buffer,
break;
dpos = va_arg(argp, unsigned int);
ret = crypto_shash_update(&sdesc->shash, buffer + dpos, dlen);
- if (ret < 0) {
- va_end(argp);
- goto out;
- }
+ if (ret < 0)
+ break;
}
va_end(argp);
- ret = crypto_shash_final(&sdesc->shash, paramdigest);
+ if (!ret)
+ ret = crypto_shash_final(&sdesc->shash, paramdigest);
if (ret < 0)
goto out;
@@ -323,13 +320,12 @@ static int TSS_checkhmac2(unsigned char *buffer,
break;
dpos = va_arg(argp, unsigned int);
ret = crypto_shash_update(&sdesc->shash, buffer + dpos, dlen);
- if (ret < 0) {
- va_end(argp);
- goto out;
- }
+ if (ret < 0)
+ break;
}
va_end(argp);
- ret = crypto_shash_final(&sdesc->shash, paramdigest);
+ if (!ret)
+ ret = crypto_shash_final(&sdesc->shash, paramdigest);
if (ret < 0)
goto out;