1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 9cf8e7ae7450..9c02d07af0d1 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -71,6 +71,7 @@
 #include <linux/timer.h>
 #include <linux/workqueue.h>
 #include <linux/input.h>
+#include <linux/semaphore.h>
 
 /*
  * We parse each description item into this structure. Short items data
@@ -475,6 +476,7 @@ struct hid_device {							/* device report descriptor */
         unsigned country;                                               /* HID country */
         struct hid_report_enum report_enum[HID_REPORT_TYPES];
 
+        struct semaphore driver_lock;                                   /* protects the current driver */
         struct device dev;                                              /* device */
         struct hid_driver *driver;
         struct hid_ll_driver *ll_driver;