Input: keyboard handler - use printk_ratelimit()

Use printk_ratelimit() to protect ourselves from buggy drivers or
devices endlessly generating invalid events.

Suggested by Andrew Morton.

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

diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 5971254..c06e86a 100644 (file)
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -1135,7 +1135,7 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
 
        if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
                if (emulate_raw(vc, keycode, !down << 7))
-                       if (keycode < BTN_MISC)
+                       if (keycode < BTN_MISC && printk_ratelimit())
                                printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
 
 #ifdef CONFIG_MAGIC_SYSRQ             /* Handle the SysRq Hack */