diff mbox series

[12/22] crypto: bcm - add check for xts input length equal to zero

Message ID 20200807162010.18979-13-andrei.botila@oss.nxp.com (mailing list archive)
State Not Applicable
Headers show
Series crypto: add check for xts input length equal to zero | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (3cd2184115b85cc8242fec3d42529cd112962984)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Andrei Botila Aug. 7, 2020, 4:20 p.m. UTC 
From: Andrei Botila <andrei.botila@nxp.com>

Standardize the way input lengths equal to 0 are handled in all skcipher
algorithms. All the algorithms return 0 for input lengths equal to zero.

Cc: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Cc: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Andrei Botila <andrei.botila@nxp.com>
---
 drivers/crypto/bcm/cipher.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c
index 8a7fa1ae1ade..8a6f225f4db7 100644
--- a/drivers/crypto/bcm/cipher.c
+++ b/drivers/crypto/bcm/cipher.c
@@ -1754,6 +1754,9 @@  static int skcipher_enqueue(struct skcipher_request *req, bool encrypt)
 	    crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
 	int err;
 
+	if (!req->cryptlen && ctx->cipher.mode == CIPHER_MODE_XTS)
+		return 0;
+
 	flow_log("%s() enc:%u\n", __func__, encrypt);
 
 	rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |