Input: remove useless synchronize_rcu() calls

There is no need to call synchronize_rcu() after a list insertion,
or a NULL->ptr assignment.

However, the reverse operations do need this call.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
index ebbceedc92f4..75e11c7b70fd 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -451,7 +451,6 @@ int input_grab_device(struct input_handle *handle)
         }
 
         rcu_assign_pointer(dev->grab, handle);
-        synchronize_rcu();
 
  out:
         mutex_unlock(&dev->mutex);