diff mbox

[1/2] thermal: helpers: Check return value of get_temp

Message ID 1465231823-12384-1-git-send-email-rklein@nvidia.com (mailing list archive)
State Superseded, archived
Delegated to: Zhang Rui
Headers show

Commit Message

Rhyland Klein June 6, 2016, 4:50 p.m. UTC
Check the return value of get_temp, which can fail. If it does, then
unlock and return the error code.

Signed-off-by: Rhyland Klein <rklein@nvidia.com>
---
 drivers/thermal/thermal_helpers.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/drivers/thermal/thermal_helpers.c b/drivers/thermal/thermal_helpers.c
index 5e1c160944c9..dc260749f8d6 100644
--- a/drivers/thermal/thermal_helpers.c
+++ b/drivers/thermal/thermal_helpers.c
@@ -90,6 +90,10 @@  int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
 	mutex_lock(&tz->lock);
 
 	ret = tz->ops->get_temp(tz, temp);
+	if (!ret) {
+		mutex_unlock(&tz->lock);
+		goto exit;
+	}
 
 	if (IS_ENABLED(CONFIG_THERMAL_EMULATION) && tz->emul_temperature) {
 		for (count = 0; count < tz->trips; count++) {