Input: make EVIOCGSND return meaningful data

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---
 drivers/input/input.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux/drivers/input/input.c
===================================================================
--- linux.orig/drivers/input/input.c
+++ linux/drivers/input/input.c
@@ -155,6 +155,9 @@ void input_event(struct input_dev *dev, 
 			if (code > SND_MAX || !test_bit(code, dev->sndbit))
 				return;
 
+			if (!!test_bit(code, dev->snd) != !!value)
+				change_bit(code, dev->snd);
+
 			if (dev->event) dev->event(dev, type, code, value);
 
 			break;