linux-kernel - [PATCH 2/2] cpuidle: fix sysfs output for power

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Date:	Fri, 14 Dec 2012 15:17:37 +0200
From:	Sivaram Nair <sivaramn@...dia.com>
To:	<rafael.j.wysocki@...el.com>, <daniel.lezcano@...aro.org>,
	<shuox.liu@...el.com>, <akpm@...ux-foundation.org>,
	<yanmin_zhang@...el.com>
CC:	<linux-pm@...r.kernel.org>, Sivaram Nair <sivaramn@...dia.com>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] cpuidle: fix sysfs output for power_usage

cpuidle_state->power_usage is signed; so change the corresponding sysfs
ops to output signed value instead of unsigned.

Signed-off-by: Sivaram Nair <sivaramn@...dia.com>
---
 drivers/cpuidle/sysfs.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 3409429..2fc79cd 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -232,6 +232,13 @@ static struct cpuidle_state_attr attr_##_name = __ATTR(_name, 0644, show, store)
 static ssize_t show_state_##_name(struct cpuidle_state *state, \
 			 struct cpuidle_state_usage *state_usage, char *buf) \
 { \
+	return sprintf(buf, "%d\n", state->_name);\
+}
+
+#define define_show_state_u_function(_name) \
+static ssize_t show_state_##_name(struct cpuidle_state *state, \
+			 struct cpuidle_state_usage *state_usage, char *buf) \
+{ \
 	return sprintf(buf, "%u\n", state->_name);\
 }
 
@@ -270,7 +277,7 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, \
 	return sprintf(buf, "%s\n", state->_name);\
 }
 
-define_show_state_function(exit_latency)
+define_show_state_u_function(exit_latency)
 define_show_state_function(power_usage)
 define_show_state_ull_function(usage)
 define_show_state_ull_function(time)
-- 
1.7.9.5

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