Input: uinput - convert to dynalloc allocation

Also introduce proper locking when creating/deleting device.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 6 insertions, 6 deletions

diff --git a/include/linux/uinput.h b/include/linux/uinput.h
index 84876077027f..6fd1a47acab2 100644
--- a/include/linux/uinput.h
+++ b/include/linux/uinput.h
@@ -34,8 +34,7 @@
 #define UINPUT_BUFFER_SIZE      16
 #define UINPUT_NUM_REQUESTS     16
 
-/* state flags => bit index for {set|clear|test}_bit ops */
-#define UIST_CREATED            0
+enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
 
 struct uinput_request {
         int                     id;
@@ -52,11 +51,12 @@ struct uinput_request {
 
 struct uinput_device {
         struct input_dev        *dev;
-        unsigned long           state;
+        struct semaphore        sem;
+        enum uinput_state       state;
         wait_queue_head_t       waitq;
-        unsigned char           ready,
-                                head,
-                                tail;
+        unsigned char           ready;
+        unsigned char           head;
+        unsigned char           tail;
         struct input_event      buff[UINPUT_BUFFER_SIZE];
 
         struct uinput_request   *requests[UINPUT_NUM_REQUESTS];