ACPI video: check for error from thermal_cooling_device_register

Need to check whether thermal_cooling_device_register
returned ERROR or not.

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

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 7f714fa2a4547d284323d85441e60a9c6b61600f..12cce69b5441e98a7bd8da23031dc250daaa88f1 100644 (file)
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -731,6 +731,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 
                device->cdev = thermal_cooling_device_register("LCD",
                                        device->dev, &video_cooling_ops);
+               if (IS_ERR(device->cdev))
+                       return;
+
                if (device->cdev) {
                        printk(KERN_INFO PREFIX
                                "%s is registered as cooling_device%d\n",