linux-kernel - [PATCH] thermal: of-thermal: Fix setting of set_emul

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 2 Jun 2016 14:24:50 +0530
From:	Keerthy <j-keerthy@...com>
To:	<edubezval@...il.com>, <rui.zhang@...el.com>
CC:	<j-keerthy@...com>, <nm@...com>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>
Subject: [PATCH] thermal: of-thermal: Fix setting of set_emul_temp hook

Currently thermal zone set_emul_temp is set unconditionally
with of_thermal_set_emul_temp function. Set this only if the
set_emul_temp hook is provided for thermal_zone_of_device_ops.

This fixes emul_temp failures on platforms for which set_emul_temp
hook is not populated.

Fixes: "184a4bf623f (thermal: of: Extend current
	of-thermal.c code to allow setting emulated temp)"
Suggested-by: Eduardo Valentin <edubezval@...il.com>
Signed-off-by: Keerthy <j-keerthy@...com>
---
 drivers/thermal/of-thermal.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index b8e509c..93d8ce0 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -181,9 +181,6 @@ static int of_thermal_set_emul_temp(struct thermal_zone_device *tz,
 {
 	struct __thermal_zone *data = tz->devdata;
 
-	if (!data->ops || !data->ops->set_emul_temp)
-		return -EINVAL;
-
 	return data->ops->set_emul_temp(data->sensor_data, temp);
 }
 
@@ -427,7 +424,9 @@ thermal_zone_of_add_sensor(struct device_node *zone,
 
 	tzd->ops->get_temp = of_thermal_get_temp;
 	tzd->ops->get_trend = of_thermal_get_trend;
-	tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
+	if (ops->set_emul_temp)
+		tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
+
 	mutex_unlock(&tzd->lock);
 
 	return tzd;
-- 
1.9.1