evm: remove TCG_TPM dependency

All tristates selected by EVM(boolean) are forced to be builtin, except
in the TCG_TPM(tristate) dependency case. Arnaud Lacombe summarizes the
Kconfig bug as, "So it would seem direct dependency state influence the
state of reverse dependencies.."  For a detailed explanation, refer to
Arnaud Lacombe's posting http://lkml.org/lkml/2011/8/23/498.

With the "encrypted-keys: remove trusted-keys dependency" patch, EVM
can now be built without a dependency on TCG_TPM.  The trusted-keys
dependency requires trusted-keys to either be builtin or not selected.
This dependency will prevent the boolean/tristate mismatch from
occuring.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>,
             Randy Dunlap <rdunlap@xenotimenet>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/security/integrity/evm/Kconfig b/security/integrity/evm/Kconfig
index 884617d4aad0..afbb59dd262d 100644
--- a/security/integrity/evm/Kconfig
+++ b/security/integrity/evm/Kconfig
@@ -1,11 +1,10 @@
 config EVM
         boolean "EVM support"
-        depends on SECURITY && KEYS && TCG_TPM
+        depends on SECURITY && KEYS && (TRUSTED_KEYS=y || TRUSTED_KEYS=n)
         select CRYPTO_HMAC
         select CRYPTO_MD5
         select CRYPTO_SHA1
         select ENCRYPTED_KEYS
-        select TRUSTED_KEYS
         default n
         help
           EVM protects a file's security extended attributes against