linux-kernel - [PATCH 3/3] tpm_tis / PM: Fix unused function warning for CONFIG_PM

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Date:	Wed, 8 Aug 2012 23:22:22 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Linux PM list <linux-pm@...r.kernel.org>,
	Len Brown <lenb@...nel.org>,
	ACPI Devel Mailing List <linux-acpi@...r.kernel.org>,
	Matthew Garrett <mjg@...hat.com>,
	platform-driver-x86@...r.kernel.org
Subject: [PATCH 3/3] tpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP


According to a compiler warning, the tpm_tis_resume() function is not
used for CONFIG_PM_SLEEP unset, so add a #ifdef to prevent it from
being built in that case.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/char/tpm/tpm_tis.c |    2 ++
 1 file changed, 2 insertions(+)

Index: linux/drivers/char/tpm/tpm_tis.c
===================================================================
--- linux.orig/drivers/char/tpm/tpm_tis.c
+++ linux/drivers/char/tpm/tpm_tis.c
@@ -807,6 +807,7 @@ module_param_string(hid, tpm_pnp_tbl[TIS
 MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe");
 #endif
 
+#ifdef CONFIG_PM_SLEEP
 static int tpm_tis_resume(struct device *dev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(dev);
@@ -816,6 +817,7 @@ static int tpm_tis_resume(struct device
 
 	return tpm_pm_resume(dev);
 }
+#endif
 
 static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume);
 

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