linux-kernel - [PATCH] PM / Domains: Fix build for CONFIG_PM

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Message-Id: <201201102213.59555.rjw@sisk.pl>
Date:	Tue, 10 Jan 2012 22:13:59 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Linux PM list <linux-pm@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Magnus Damm <magnus.damm@...il.com>, linux-sh@...r.kernel.org
Subject: [PATCH] PM / Domains: Fix build for CONFIG_PM_SLEEP unset

From: Rafael J. Wysocki <rjw@...k.pl>

Some callback functions defined in drivers/base/power/domain.c are
only necessary if CONFIG_PM_SLEEP and they call some other functions
that are only available in that case.  For this reason, they should
not be compiled at all when CONFIG_PM_SLEEP is not set.

Reported-by: Magnus Damm <damm@...nsource.se>
Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/base/power/domain.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

Index: linux/drivers/base/power/domain.c
===================================================================
--- linux.orig/drivers/base/power/domain.c
+++ linux/drivers/base/power/domain.c
@@ -1429,6 +1429,8 @@ static int pm_genpd_default_restore_stat
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+
 /**
  * pm_genpd_default_suspend - Default "device suspend" for PM domians.
  * @dev: Device to handle.
@@ -1517,6 +1519,19 @@ static int pm_genpd_default_thaw(struct
 	return cb ? cb(dev) : pm_generic_thaw(dev);
 }
 
+#else /* !CONFIG_PM_SLEEP */
+
+#define pm_genpd_default_suspend	NULL
+#define pm_genpd_default_suspend_late	NULL
+#define pm_genpd_default_resume_early	NULL
+#define pm_genpd_default_resume		NULL
+#define pm_genpd_default_freeze		NULL
+#define pm_genpd_default_freeze_late	NULL
+#define pm_genpd_default_thaw_early	NULL
+#define pm_genpd_default_thaw		NULL
+
+#endif /* !CONFIG_PM_SLEEP */
+
 /**
  * pm_genpd_init - Initialize a generic I/O PM domain object.
  * @genpd: PM domain object to initialize.
--
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