]> git.openfabrics.org - ~shefty/rdma-dev.git/blobdiff - drivers/thermal/thermal_sys.c
thermal_sys: check get_temp return value
[~shefty/rdma-dev.git] / drivers / thermal / thermal_sys.c
index 0a69672097a8195e3671e1d63b164c19fa0ababc..4e83c297ec9efdc191c084f913637b8aaa0e7d2f 100644 (file)
@@ -953,7 +953,12 @@ void thermal_zone_device_update(struct thermal_zone_device *tz)
 
        mutex_lock(&tz->lock);
 
-       tz->ops->get_temp(tz, &temp);
+       if (tz->ops->get_temp(tz, &temp)) {
+               /* get_temp failed - retry it later */
+               printk(KERN_WARNING PREFIX "failed to read out thermal zone "
+                      "%d\n", tz->id);
+               goto leave;
+       }
 
        for (count = 0; count < tz->trips; count++) {
                tz->ops->get_trip_type(tz, count, &trip_type);
@@ -1005,6 +1010,8 @@ void thermal_zone_device_update(struct thermal_zone_device *tz)
                                            THERMAL_TRIPS_NONE);
 
        tz->last_temperature = temp;
+
+      leave:
        if (tz->passive)
                thermal_zone_device_set_polling(tz, tz->passive_delay);
        else if (tz->polling_delay)