diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
index 35ad1b032726..e5cb0fdab9b1 100644
--- a/drivers/hwmon/abituguru.c
+++ b/drivers/hwmon/abituguru.c
@@ -1354,13 +1354,39 @@ LEAVE_UPDATE:
 		return NULL;
 }
 
+#ifdef CONFIG_PM
+static int abituguru_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	struct abituguru_data *data = platform_get_drvdata(pdev);
+	/* make sure all communications with the uguru are done and no new
+	   ones are started */
+	mutex_lock(&data->update_lock);
+	return 0;
+}
+
+static int abituguru_resume(struct platform_device *pdev)
+{
+	struct abituguru_data *data = platform_get_drvdata(pdev);
+	/* See if the uGuru is still ready */
+	if (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT)
+		data->uguru_ready = 0;
+	mutex_unlock(&data->update_lock);
+	return 0;
+}
+#else
+#define abituguru_suspend	NULL
+#define abituguru_resume	NULL
+#endif /* CONFIG_PM */
+
 static struct platform_driver abituguru_driver = {
 	.driver = {
 		.owner	= THIS_MODULE,
 		.name	= ABIT_UGURU_NAME,
 	},
-	.probe	= abituguru_probe,
-	.remove	= __devexit_p(abituguru_remove),
+	.probe		= abituguru_probe,
+	.remove		= __devexit_p(abituguru_remove),
+	.suspend	= abituguru_suspend,
+	.resume		= abituguru_resume,
 };
 
 static int __init abituguru_detect(void)