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authorFuqian Huang <huangfq.daxian@gmail.com>2019-07-03 19:27:08 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2019-07-26 08:03:59 +0300
commitcc2a58f14fb88e753fbc38b658e320c3a62d8c47 (patch)
treee835794ef0fdf53b72e914da35c9fec6deffeede /drivers/crypto/virtio
parent97bcb161995548ad319c78b2533f998a7b92ab4c (diff)
downloadlinux-cc2a58f14fb88e753fbc38b658e320c3a62d8c47.tar.xz
crypto: drivers - Use kmemdup rather than duplicating its implementation
kmemdup is introduced to duplicate a region of memory in a neat way. Rather than kmalloc/kzalloc + memcpy, which the programmer needs to write the size twice (sometimes lead to mistakes), kmemdup improves readability, leads to smaller code and also reduce the chances of mistakes. Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy. Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/virtio')
-rw-r--r--drivers/crypto/virtio/virtio_crypto_algs.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c b/drivers/crypto/virtio/virtio_crypto_algs.c
index 10f266d462d6..42d19205166b 100644
--- a/drivers/crypto/virtio/virtio_crypto_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_algs.c
@@ -129,13 +129,11 @@ static int virtio_crypto_alg_ablkcipher_init_session(
* Avoid to do DMA from the stack, switch to using
* dynamically-allocated for the key
*/
- uint8_t *cipher_key = kmalloc(keylen, GFP_ATOMIC);
+ uint8_t *cipher_key = kmemdup(key, keylen, GFP_ATOMIC);
if (!cipher_key)
return -ENOMEM;
- memcpy(cipher_key, key, keylen);
-
spin_lock(&vcrypto->ctrl_lock);
/* Pad ctrl header */
vcrypto->ctrl.header.opcode =