[PATCH 4.15 044/163] crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng_generate

Greg Kroah-Hartman
2018-02-21T12:47:53Z

From: Artem Savkov <artem.savkov@gmail.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@gmail.com>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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;
}