From aca8bf0027d3ab4492d47e6b05b13911948903db Mon Sep 17 00:00:00 2001 From: Tero Kristo Date: Tue, 5 Nov 2019 16:01:10 +0200 Subject: [PATCH] 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 Signed-off-by: Herbert Xu --- drivers/crypto/omap-des.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 31fc930..8eda433 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -637,6 +637,9 @@ static int omap_des_crypt(struct skcipher_request *req, unsigned long mode) !!(mode & FLAGS_ENCRYPT), !!(mode & FLAGS_CBC)); + if (!req->cryptlen) + return 0; + if (!IS_ALIGNED(req->cryptlen, DES_BLOCK_SIZE)) return -EINVAL; -- 2.7.4