linux-kernel - [PATCH] acpi: fix unused function warning

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Message-Id: <20100616100728.382C.A69D9226@jp.fujitsu.com>
Date:	Wed, 16 Jun 2010 10:12:05 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Venkatesh Pallipadi <venki@...gle.com>,
	Len Brown <len.brown@...el.com>,
	LKML <linux-kernel@...r.kernel.org>
Cc:	kosaki.motohiro@...fujitsu.com
Subject: [PATCH] acpi: fix unused function warning

Len, Is this known issue?


=========================================================
When CONFIG_ACPI_PROCFS=n, processor_idle.c makes following warning.

	drivers/acpi/processor_idle.c:83: warning: 'us_to_pm_timer_ticks'
	defined but not used.

This patch fixes it.

Cc: Venkatesh Pallipadi <venki@...gle.com>
Cc: Len Brown <len.brown@...el.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
---
 drivers/acpi/processor_idle.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 0e562d0..3c36769 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -80,10 +80,13 @@ module_param(nocst, uint, 0000);
 static unsigned int latency_factor __read_mostly = 2;
 module_param(latency_factor, uint, 0644);
 
+#ifdef CONFIG_ACPI_PROCFS
 static u64 us_to_pm_timer_ticks(s64 t)
 {
 	return div64_u64(t * PM_TIMER_FREQUENCY, 1000000);
 }
+#endif
+
 /*
  * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3.
  * For now disable this. Probably a bug somewhere else.
-- 
1.6.5.2



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