linux-kernel - [PATCH 3.12 106/111] crypto: testmgr

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Date:	Wed, 10 Jun 2015 17:27:35 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Stephan Mueller <smueller@...onox.de>,
	Alexander Bergmann <abergmann@...e.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 106/111] crypto: testmgr - fix RNG return code enforcement

From: Stephan Mueller <smueller@...onox.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 19e60e1392d110be03d794e2286dd6cfd779cbe3 upstream.

Due to the change to RNGs to always return zero in success case, the
invocation of the RNGs in the test manager must be updated as otherwise
the RNG self tests are not properly executed any more.

Signed-off-by: Stephan Mueller <smueller@...onox.de>
Signed-off-by: Alexander Bergmann <abergmann@...e.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 crypto/testmgr.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 93e508c39e3b..779a12dcb6a8 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1460,11 +1460,11 @@ static int test_cprng(struct crypto_rng *tfm, struct cprng_testvec *template,
 		for (j = 0; j < template[i].loops; j++) {
 			err = crypto_rng_get_bytes(tfm, result,
 						   template[i].rlen);
-			if (err != template[i].rlen) {
+			if (err < 0) {
 				printk(KERN_ERR "alg: cprng: Failed to obtain "
 				       "the correct amount of random data for "
-				       "%s (requested %d, got %d)\n", algo,
-				       template[i].rlen, err);
+				       "%s (requested %d)\n", algo,
+				       template[i].rlen);
 				goto out;
 			}
 		}
-- 
2.4.2

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