linux-kernel - [PATCH] tpm: select CONFIG

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Date:   Tue, 28 Feb 2017 22:12:55 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Peter Huewe <peterhuewe@....de>,
        Marcel Selhorst <tpmdd@...horst.net>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        Christophe Ricard <christophe.ricard@...il.com>,
        Nayna Jain <nayna@...ux.vnet.ibm.com>,
        tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH] tpm: select CONFIG_CRYPTO

We get a newly introduced harmless warning when CONFIG_CRYPTO is disabled:

warning: (TCG_TPM && TRUSTED_KEYS && IMA) selects CRYPTO_HASH_INFO which has unmet direct dependencies (CRYPTO)

This adds another select to avoid the warning, consistent with other users
of the crypto code.

Fixes: c1f92b4b04ad ("tpm: enhance TPM 2.0 PCR extend to support multiple banks")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/char/tpm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index af985cca413c..d520ac51c11c 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -6,6 +6,7 @@ menuconfig TCG_TPM
 	tristate "TPM Hardware Support"
 	depends on HAS_IOMEM
 	select SECURITYFS
+	select CRYPTO
 	select CRYPTO_HASH_INFO
 	---help---
 	  If you have a TPM security chip in your system, which
-- 
2.9.0