[S390] use kzfree()

Use kzfree() instead of memset() + kfree().

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/s390/crypto/prng.c b/arch/s390/crypto/prng.c
index eca724d229e..b49c00ce65e 100644
--- a/arch/s390/crypto/prng.c
+++ b/arch/s390/crypto/prng.c
@@ -201,8 +201,7 @@ out_free:
 static void __exit prng_exit(void)
 {
         /* wipe me */
-        memset(p->buf, 0, prng_chunk_size);
-        kfree(p->buf);
+        kzfree(p->buf);
         kfree(p);
 
         misc_deregister(&prng_dev);