linux-kernel - [PATCH] evm: Clean up some variables

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Date:   Fri, 13 May 2022 13:41:05 -0400
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     zohar@...ux.ibm.com, linux-integrity@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Stefan Berger <stefanb@...ux.ibm.com>
Subject: [PATCH] evm: Clean up some variables

Make hmac_tfm static since it's not used anywhere else besides the file
it is in.

Remove declaration of hash_tfm since it doesn't exist.

Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>
---
 security/integrity/evm/evm.h        | 3 ---
 security/integrity/evm/evm_crypto.c | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/security/integrity/evm/evm.h b/security/integrity/evm/evm.h
index 0d44f41d16f8..f8b8c5004fc7 100644
--- a/security/integrity/evm/evm.h
+++ b/security/integrity/evm/evm.h
@@ -38,9 +38,6 @@ extern int evm_initialized;
 
 extern int evm_hmac_attrs;
 
-extern struct crypto_shash *hmac_tfm;
-extern struct crypto_shash *hash_tfm;
-
 /* List of EVM protected security xattrs */
 extern struct list_head evm_config_xattrnames;
 
diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index 0450d79afdc8..a733aff02006 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -26,7 +26,7 @@
 static unsigned char evmkey[MAX_KEY_SIZE];
 static const int evmkey_len = MAX_KEY_SIZE;
 
-struct crypto_shash *hmac_tfm;
+static struct crypto_shash *hmac_tfm;
 static struct crypto_shash *evm_tfm[HASH_ALGO__LAST];
 
 static DEFINE_MUTEX(mutex);
-- 
2.35.1