linux-kernel - [PATCH v2] tpm: Fix compilation warning when CONFIG

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Date:	Mon, 18 Jul 2011 09:11:55 -0400
From:	Stefan Berger <stefanb@...ux.vnet.ibm.com>
To:	rdunlap@...otime.net, Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	James Morris <jmorris@...ei.org>, linux-next@...r.kernel.org
Subject: [PATCH v2] tpm: Fix compilation warning when CONFIG_PNP is not
 defined

The is_itpm() function is only accessed from a block surrounded by
#ifdef CONFIG_PNP. Therefore, also surround it with #ifdef CONFIG_PNP
and remove the #else branch causing the warning.

http://lxr.linux.no/#linux+v2.6.39/drivers/char/tpm/tpm_tis.c#L622

v2:
 - fixes a previous typo

Signed-off-by: Stefan Berger <stefanb@...ux.vnet.ibm.com>

---
 drivers/char/tpm/tpm_tis.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

Index: linux-2.6/drivers/char/tpm/tpm_tis.c
===================================================================
--- linux-2.6.orig/drivers/char/tpm/tpm_tis.c
+++ linux-2.6/drivers/char/tpm/tpm_tis.c
@@ -80,7 +80,7 @@ enum tis_defaults {
 static LIST_HEAD(tis_chips);
 static DEFINE_SPINLOCK(tis_lock);
 
-#ifdef CONFIG_ACPI
+#ifdef CONFIG_PNP
 static int is_itpm(struct pnp_dev *dev)
 {
 	struct acpi_device *acpi = pnp_acpi_device(dev);
@@ -93,11 +93,6 @@ static int is_itpm(struct pnp_dev *dev)
 
 	return 0;
 }
-#else
-static int is_itpm(struct pnp_dev *dev)
-{
-	return 0;
-}
 #endif
 
 static int check_locality(struct tpm_chip *chip, int l)


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