thermal: use ERR_PTR for returning error

Need to return using ERR_PTR instead of NULL
in case of errors.

Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 13 insertions, 13 deletions

diff --git a/drivers/thermal/thermal.c b/drivers/thermal/thermal.c
index 5f1d318f0574..8b86e53ccf7a 100644
--- a/drivers/thermal/thermal.c
+++ b/drivers/thermal/thermal.c
@@ -448,20 +448,20 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
         int result;
 
         if (strlen(type) >= THERMAL_NAME_LENGTH)
-                return NULL;
+                return ERR_PTR(-EINVAL);
 
         if (!ops || !ops->get_max_state || !ops->get_cur_state ||
             !ops->set_cur_state)
-                return NULL;
+                return ERR_PTR(-EINVAL);
 
         cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
         if (!cdev)
-                return NULL;
+                return ERR_PTR(-ENOMEM);
 
         result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
         if (result) {
                 kfree(cdev);
-                return NULL;
+                return ERR_PTR(result);
         }
 
         strcpy(cdev->type, type);
@@ -473,7 +473,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
         if (result) {
                 release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
                 kfree(cdev);
-                return NULL;
+                return ERR_PTR(result);
         }
 
         /* sys I/F */
@@ -509,7 +509,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
       unregister:
         release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
         device_unregister(&cdev->device);
-        return NULL;
+        return ERR_PTR(result);
 }
 
 EXPORT_SYMBOL(thermal_cooling_device_register);
@@ -581,17 +581,17 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
         int count;
 
         if (strlen(type) >= THERMAL_NAME_LENGTH)
-                return NULL;
+                return ERR_PTR(-EINVAL);
 
         if (trips > THERMAL_MAX_TRIPS || trips < 0)
-                return NULL;
+                return ERR_PTR(-EINVAL);
 
         if (!ops || !ops->get_temp)
-                return NULL;
+                return ERR_PTR(-EINVAL);
 
         tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
         if (!tz)
-                return NULL;
+                return ERR_PTR(-ENOMEM);
 
         INIT_LIST_HEAD(&tz->cooling_devices);
         idr_init(&tz->idr);
@@ -599,7 +599,7 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
         result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
         if (result) {
                 kfree(tz);
-                return NULL;
+                return ERR_PTR(result);
         }
 
         strcpy(tz->type, type);
@@ -612,7 +612,7 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
         if (result) {
                 release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
                 kfree(tz);
-                return NULL;
+                return ERR_PTR(result);
         }
 
         /* sys I/F */
@@ -654,7 +654,7 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
       unregister:
         release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
         device_unregister(&tz->device);
-        return NULL;
+        return ERR_PTR(result);
 }
 
 EXPORT_SYMBOL(thermal_zone_device_register);