linux-kernel - [PATCH] tpm: TCG_ATMEL should depend on HAS

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Date:	Mon,  8 Aug 2011 13:08:19 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Debora Velarde <debora@...ux.vnet.ibm.com>,
	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>,
	Marcel Selhorst <m.selhorst@...rix.com>
Cc:	Jonas Bonn <jonas@...thpole.se>, Arnd Bergmann <arnd@...db.de>,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] tpm: TCG_ATMEL should depend on HAS_IOPORT

On m68k, I get:

drivers/char/tpm/tpm_atmel.h: In function ‘atmel_get_base_addr’:
drivers/char/tpm/tpm_atmel.h:129: error: implicit declaration of function ‘ioport_map’
drivers/char/tpm/tpm_atmel.h:129: warning: return makes pointer from integer without a cast

The code in tpm_atmel.h supports PPC64 (using the device tree and ioremap())
and "anything else" (using ioport_map()). However, ioportmap() is only
available on platforms that set HAS_IOPORT.

Although PC64 seems to have HAS_IOPORT, a "depends on HAS_IOPORT" should work,
but I think it's better to expose the special PPC64 handling explicit using
"depends on PPC64 || HAS_IOPORT".

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 drivers/char/tpm/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index f6595ab..fa567f1 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -43,6 +43,7 @@ config TCG_NSC
 
 config TCG_ATMEL
 	tristate "Atmel TPM Interface"
+	depends on PPC64 || HAS_IOPORT
 	---help---
 	  If you have a TPM security chip from Atmel say Yes and it 
 	  will be accessible from within Linux.  To compile this driver 
-- 
1.7.0.4

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