diff options
| author | Fuqian Huang <huangfq.daxian@gmail.com> | 2019-07-04 00:27:08 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-07-26 15:03:59 +1000 |
| commit | cc2a58f14fb88e753fbc38b658e320c3a62d8c47 (patch) | |
| tree | e835794ef0fdf53b72e914da35c9fec6deffeede /drivers/crypto/virtio | |
| parent | 97bcb161995548ad319c78b2533f998a7b92ab4c (diff) | |
| download | linux-cc2a58f14fb88e753fbc38b658e320c3a62d8c47.tar.gz | |
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.c | 4 |
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 = |