From: Ian Campbell <ijc@hellion.org.uk>
Date: Sun, 4 Sep 2005 06:41:14 +0000 (-0500)
Subject: Input: fix checking whether new keycode fits size-wise
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=4cee99564db7f65a6f88e4b752da52768cde3802;p=linux-edison.git

Input: fix checking whether new keycode fits size-wise

When dev->keycodesize == sizeof(int) the old code produces
incorrect result.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 523fd3c8bba..1ddaabeb8ef 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -200,7 +200,7 @@ int setkeycode(unsigned int scancode, unsigned int keycode)
 		return -EINVAL;
 	if (keycode < 0 || keycode > KEY_MAX)
 		return -EINVAL;
-	if (keycode >> (dev->keycodesize * 8))
+	if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8)))
 		return -EINVAL;
 
 	oldkey = SET_INPUT_KEYCODE(dev, scancode, keycode);
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 20e3a165989..3a8314bb790 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -320,7 +320,7 @@ static long evdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 			if (t < 0 || t >= dev->keycodemax || !dev->keycodesize) return -EINVAL;
 			if (get_user(v, ip + 1)) return -EFAULT;
 			if (v < 0 || v > KEY_MAX) return -EINVAL;
-			if (v >> (dev->keycodesize * 8)) return -EINVAL;
+			if (dev->keycodesize < sizeof(v) && (v >> (dev->keycodesize * 8))) return -EINVAL;
 			u = SET_INPUT_KEYCODE(dev, t, v);
 			clear_bit(u, dev->keybit);
 			set_bit(v, dev->keybit);