linux-kernel - [PATCH] tpm: select ANON

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Date:	Thu, 28 Apr 2016 12:46:13 +0200
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>,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH] tpm: select ANON_INODES for proxy driver

The newly added vtpmx driver fails to build if CONFIG_ANON_INODES
is disabled:

drivers/char/built-in.o: In function `vtpmx_fops_ioctl':
(.text+0x97f8): undefined reference to `anon_inode_getfile'

This adds a Kconfig 'select' statement to ensure it's always there
when we need it.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: 794c38e01358 ("tpm: Proxy driver for supporting multiple emulated TPMs")
---
 drivers/char/tpm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index 0eac596e33d1..bfdc5c0486aa 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -125,6 +125,7 @@ config TCG_CRB
 config TCG_VTPM_PROXY
 	tristate "VTPM Proxy Interface"
 	depends on TCG_TPM
+	select ANON_INODES
 	---help---
 	  This driver proxies for an emulated TPM (vTPM) running in userspace.
 	  A device /dev/vtpmx is provided that creates a device pair
-- 
2.7.0