diff --git a/drivers/base/core.c b/drivers/base/core.c
index 04d089f..5d4b7e0 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -583,7 +583,7 @@
  * been created with a call to class_create().
  */
 struct device *device_create(struct class *class, struct device *parent,
-			     dev_t devt, char *fmt, ...)
+			     dev_t devt, const char *fmt, ...)
 {
 	va_list args;
 	struct device *dev = NULL;
diff --git a/include/linux/device.h b/include/linux/device.h
index 1fec285..8d92013 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -384,7 +384,7 @@
  * Easy functions for dynamically creating devices on the fly
  */
 extern struct device *device_create(struct class *cls, struct device *parent,
-				    dev_t devt, char *fmt, ...)
+				    dev_t devt, const char *fmt, ...)
 				    __attribute__((format(printf,4,5)));
 extern void device_destroy(struct class *cls, dev_t devt);