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up long time ago; the link in the message is no longer valid either, so it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>

1 files changed, 0 insertions, 18 deletions

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index a06e12552886..4af24f1e91b1 100644
--- 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)
 {