Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1409883 > unrolled thread

[PATCH 01/15] thermal: sysfs: lock tz in type_show

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  [PATCH 01/15] thermal: sysfs: lock tz in type_show Eduardo Valentin <edubezval@gmail.com> - 2016-05-31 08:40 +0200

#1409883 — [PATCH 01/15] thermal: sysfs: lock tz in type_show

Avoid race while accessing tz->type.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
---
 drivers/thermal/thermal_sysfs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index 4136b71..ee983ca 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -29,8 +29,13 @@ static ssize_t
 type_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	char *type;
 
-	return sprintf(buf, "%s\n", tz->type);
+	mutex_lock(&tz->lock);
+	type = tz->type;
+	mutex_unlock(&tz->lock);
+
+	return sprintf(buf, "%s\n", type);
 }
 
 static ssize_t
-- 
2.1.4

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web