Messages in this thread Patch in this message | | | From | Eduardo Valentin <> | Subject | [PATCH 01/15] thermal: sysfs: lock tz in type_show | Date | Mon, 30 May 2016 23:31:22 -0700 |
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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
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