From 4cee99564db7f65a6f88e4b752da52768cde3802 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Sun, 4 Sep 2005 01:41:14 -0500 Subject: 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 Signed-off-by: Dmitry Torokhov diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c index 523fd3c..1ddaabe 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 20e3a16..3a8314b 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); -- cgit v0.10.2