1 files changed, 5 insertions, 2 deletions

diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 2963263f31e2..60536c74c1ea 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -40,10 +40,12 @@ enum rc_driver_type {
  * @driver_name: name of the hardware driver which registered this device
  * @map_name: name of the default keymap
  * @rc_map: current scan/key table
+ * @lock: used to ensure we've filled in all protocol details before
+ *      anyone can call show_protocols or store_protocols
  * @devno: unique remote control device number
  * @raw: additional data for raw pulse/space devices
  * @input_dev: the input child device used to communicate events to userspace
- * @driver_type: specifies if protocol decoding is done in hardware or software 
+ * @driver_type: specifies if protocol decoding is done in hardware or software
  * @idle: used to keep track of RX state
  * @allowed_protos: bitmask with the supported RC_TYPE_* protocols
  * @scanmask: some hardware decoders are not capable of providing the full
@@ -86,7 +88,8 @@ struct rc_dev {
         struct input_id                 input_id;
         char                            *driver_name;
         const char                      *map_name;
-        struct rc_map   rc_map;
+        struct rc_map                   rc_map;
+        struct mutex                    lock;
         unsigned long                   devno;
         struct ir_raw_event_ctrl        *raw;
         struct input_dev                *input_dev;