Input: evdev - get rid of old workaround for EVIOCGBIT

We put this workaround in 2008 and the offending userspace has been fixed
up long time ago; the link in the message is no longer valid either, so it
is time to retire it.

Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index a06e125..4af24f1 100644 (file)
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -629,12 +629,10 @@ static int str_to_user(const char *str, unsigned int maxlen, void __user *p)
        return copy_to_user(p, str, len) ? -EFAULT : len;
 }
 
-#define OLD_KEY_MAX    0x1ff
 static int handle_eviocgbit(struct input_dev *dev,
                            unsigned int type, unsigned int size,
                            void __user *p, int compat_mode)
 {
-       static unsigned long keymax_warn_time;
        unsigned long *bits;
        int len;
 
@@ -652,24 +650,8 @@ static int handle_eviocgbit(struct input_dev *dev,
        default: return -EINVAL;
        }
 
-       /*
-        * Work around bugs in userspace programs that like to do
-        * EVIOCGBIT(EV_KEY, KEY_MAX) and not realize that 'len'
-        * should be in bytes, not in bits.
-        */
-       if (type == EV_KEY && size == OLD_KEY_MAX) {
-               len = OLD_KEY_MAX;
-               if (printk_timed_ratelimit(&keymax_warn_time, 10 * 1000))
-                       pr_warning("(EVIOCGBIT): Suspicious buffer size %u, "
-                                  "limiting output to %zu bytes. See "
-                                  "http://userweb.kernel.org/~dtor/eviocgbit-bug.html\n",
-                                  OLD_KEY_MAX,
-                                  BITS_TO_LONGS(OLD_KEY_MAX) * sizeof(long));
-       }
-
        return bits_to_user(bits, len, size, p, compat_mode);
 }
-#undef OLD_KEY_MAX
 
 static int evdev_handle_get_keycode(struct input_dev *dev, void __user *p)
 {