From: Dmitry Torokhov <dtor@insightbb.com>
Date: Thu, 12 Apr 2007 05:30:52 +0000 (-0400)
Subject: Input: keyboard handler - use printk_ratelimit()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=9e35d20663344b38339ffb6127ba08285f3397a9;p=deliverable%2Flinux.git

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 59712546f911..c06e86ad1dab 100644
--- 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 */