1 files changed, 7 insertions, 2 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 5a64775e68e4..4bea53fe8f4c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -385,8 +385,13 @@ struct device {
         struct device_driver *driver;   /* which driver has allocated this
                                            device */
         void            *driver_data;   /* data private to the driver */
-        void            *platform_data; /* Platform specific data, device
-                                           core doesn't touch it */
+
+        void            *platform_data; /* We will remove platform_data
+                                           field if all platform devices
+                                           pass its platform specific data
+                                           from platform_device->platform_data,
+                                           other kind of devices should not
+                                           use platform_data. */
         struct dev_pm_info      power;
 
 #ifdef CONFIG_NUMA