linux-kernel - [PATCH] therm_throt.c: Fix error handling in thermal_throttle_add

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Date:	Thu,  2 Sep 2010 17:45:26 -0700
From:	"Fenghua Yu" <fenghua.yu@...el.com>
To:	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"H Peter Anvin" <hpa@...or.com>, "Len Brown" <lenb@...nel.org>,
	"Jin Dongming" <jin.dongming@...css.fujitsu.com>,
	"Hidetoshi Seto" <seto.hidetoshi@...fujitsu.com>,
	"Jean Delvare" <khali@...ux-fr.org>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"lm-sensors" <lm-sensors@...sensors.org>,
	Fenghua Yu <fenghua.yu@...el.com>
Subject: [PATCH] therm_throt.c: Fix error handling in thermal_throttle_add_dev

From: Fenghua Yu <fenghua.yu@...el.com>

Warn when sysfs_add_file_to_group fails.

Also add missing curly braces.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
---
 arch/x86/kernel/cpu/mcheck/therm_throt.c |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index c2a8b26..4c3cd62 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -211,20 +211,26 @@ static __cpuinit int thermal_throttle_add_dev(struct sys_device *sys_dev)
 	if (err)
 		return err;
 
-	if (cpu_has(c, X86_FEATURE_PLN))
+	if (cpu_has(c, X86_FEATURE_PLN)) {
 		err = sysfs_add_file_to_group(&sys_dev->kobj,
 					      &attr_core_power_limit_count.attr,
 					      thermal_attr_group.name);
-	if (cpu_has(c, X86_FEATURE_PTS))
+		WARN_ON(err);
+	}
+	if (cpu_has(c, X86_FEATURE_PTS)) {
 		err = sysfs_add_file_to_group(&sys_dev->kobj,
 					      &attr_package_throttle_count.attr,
 					      thermal_attr_group.name);
-		if (cpu_has(c, X86_FEATURE_PLN))
+		WARN_ON(err);
+		if (cpu_has(c, X86_FEATURE_PLN)) {
 			err = sysfs_add_file_to_group(&sys_dev->kobj,
 					&attr_package_power_limit_count.attr,
 					thermal_attr_group.name);
+			WARN_ON(err);
+		}
+	}
 
-	return err;
+	return 0;
 }
 
 static __cpuinit void thermal_throttle_remove_dev(struct sys_device *sys_dev)
-- 
1.6.0.3

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