[PATCH] KEYS: trusted: dcp: Use kfree_sensitive() to fix Coccinelle warnings

[Bo Liu]

Replace memzero_explicit() and kfree() with kfree_sensitive() to fix
warnings reported by Coccinelle:

WARNING opportunity for kfree_sensitive/kvfree_sensitive
WARNING opportunity for kfree_sensitive/kvfree_sensitive

Signed-off-by: Bo Liu <liubo03 at inspur.com>
---
 security/keys/trusted-keys/trusted_dcp.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/security/keys/trusted-keys/trusted_dcp.c b/security/keys/trusted-keys/trusted_dcp.c
index 7b6eb655df0c..c967837e72ee 100644
--- a/security/keys/trusted-keys/trusted_dcp.c
+++ b/security/keys/trusted-keys/trusted_dcp.c
@@ -233,8 +233,7 @@ static int trusted_dcp_seal(struct trusted_key_payload *p, char *datablob)
 	ret = 0;
 
 out:
-	memzero_explicit(plain_blob_key, AES_KEYSIZE_128);
-	kfree(plain_blob_key);
+	kfree_sensitive(plain_blob_key);
 
 	return ret;
 }
@@ -283,8 +282,7 @@ static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
 	ret = 0;
 out:
 	if (plain_blob_key) {
-		memzero_explicit(plain_blob_key, AES_KEYSIZE_128);
-		kfree(plain_blob_key);
+		kfree_sensitive(plain_blob_key);
 	}
 
 	return ret;
-- 
2.31.1