hwmon: Register thermal zone only if 'dev' parameter was provided
Rgistering a thermal zone uses devm_kzalloc(), which requires
a pointer to the parent device.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 9a02c45..28375d5 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -608,7 +608,7 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata,
if (err)
goto free_hwmon;
- if (chip && chip->ops->read &&
+ if (dev && chip && chip->ops->read &&
chip->info[0]->type == hwmon_chip &&
(chip->info[0]->config[0] & HWMON_C_REGISTER_TZ)) {
const struct hwmon_channel_info **info = chip->info;