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-rw-r--r--include/linux/input.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/input.h b/include/linux/input.h
index 9d9598ed760d..b9cc0ac71f44 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -859,6 +859,10 @@ struct input_dev {
int (*erase_effect)(struct input_dev *dev, int effect_id);
struct input_handle *grab;
+
+ struct semaphore sem; /* serializes open and close operations */
+ unsigned int users;
+
struct device *dev;
struct list_head h_list;
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