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crypto: null - use memcpy_sglist()

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Make null_skcipher_crypt() use memcpy_sglist() instead of the
skcipher_walk API, as this is simpler.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2025-05-05 12:10:45 -07:00 • committed by Herbert Xu
parent bde393057b
commit aeaad5bfb1
1 changed files with 4 additions and 13 deletions
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17
crypto/crypto_null.c
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@ -15,6 +15,7 @@
#include <crypto/null.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/skcipher.h>
#include <crypto/scatterwalk.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
@ -60,19 +61,9 @@ static void null_crypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static int null_skcipher_crypt(struct skcipher_request *req)
{
struct skcipher_walk walk;
int err;
err = skcipher_walk_virt(&walk, req, false);
while (walk.nbytes) {
if (walk.src.virt.addr != walk.dst.virt.addr)
memcpy(walk.dst.virt.addr, walk.src.virt.addr,
walk.nbytes);
err = skcipher_walk_done(&walk, 0);
}
return err;
if (req->src != req->dst)
memcpy_sglist(req->dst, req->src, req->cryptlen);
return 0;
}
static struct shash_alg digest_null = {