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crypto: omap-des - handle NULL cipher request 

If no data is provided for DES request, just return immediately. No
processing is needed in this case.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tero Kristo 2019-11-05 16:01:10 +02:00 committed by Herbert Xu
parent 96846223ac
commit aca8bf0027
1 changed files with 3 additions and 0 deletions
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3
drivers/crypto/omap-des.c
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@ -637,6 +637,9 @@ static int omap_des_crypt(struct skcipher_request *req, unsigned long mode)
!!(mode & FLAGS_ENCRYPT), !!(mode & FLAGS_ENCRYPT),
!!(mode & FLAGS_CBC)); !!(mode & FLAGS_CBC));
if (!req->cryptlen)
return 0;
if (!IS_ALIGNED(req->cryptlen, DES_BLOCK_SIZE)) if (!IS_ALIGNED(req->cryptlen, DES_BLOCK_SIZE))
return -EINVAL; return -EINVAL;