Input: check keycodesize when adjusting keymaps

When changing key mappings we need to make sure that the new
keycode value can be stored in dev->keycodesize bytes.

Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 7b19e02f112f..523fd3c8bbaa 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -198,10 +198,10 @@ int setkeycode(unsigned int scancode, unsigned int keycode)
 
         if (scancode >= dev->keycodemax)
                 return -EINVAL;
-        if (keycode > KEY_MAX)
-                return -EINVAL;
         if (keycode < 0 || keycode > KEY_MAX)
                 return -EINVAL;
+        if (keycode >> (dev->keycodesize * 8))
+                return -EINVAL;
 
         oldkey = SET_INPUT_KEYCODE(dev, scancode, keycode);