diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 18574857641e..604fd9bc8f22 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -6,6 +6,8 @@
  * Copyright (C) 2011-2012 Avionic Design GmbH
  */
 
+#define DEFAULT_SYMBOL_NAMESPACE PWM
+
 #include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/idr.h>
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 60b92c2c75ef..812c550de60c 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -4,9 +4,12 @@
 
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of.h>
 
+MODULE_IMPORT_NS(PWM);
+
 struct pwm_chip;
 
 /**