linux-kernel - [PATCH 4.15 044/163] crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng

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Date:   Wed, 21 Feb 2018 13:47:53 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Artem Savkov <artem.savkov@...il.com>,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 4.15 044/163] crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng_generate

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

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

From: Artem Savkov <artem.savkov@...il.com>

commit dd78c832ffaf86eb6434e56de4bc3bc31f03f771 upstream.

According to crypto/rng.h generate function should return 0 on success
and < 0 on error.

Fixes: b8ae5c7387ad ("crypto: sun4i-ss - support the Security System PRNG")
Signed-off-by: Artem Savkov <artem.savkov@...il.com>
Acked-by: Corentin Labbe <clabbe.montjoie@...il.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/crypto/sunxi-ss/sun4i-ss-prng.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/sunxi-ss/sun4i-ss-prng.c
+++ b/drivers/crypto/sunxi-ss/sun4i-ss-prng.c
@@ -52,5 +52,5 @@ int sun4i_ss_prng_generate(struct crypto
 
 	writel(0, ss->base + SS_CTL);
 	spin_unlock(&ss->slock);
-	return dlen;
+	return 0;
 }