From 74469895e39fa38337f59edd64c4031ab9bb51d8 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 15 Jul 2013 13:06:28 +1000
Subject: dix: allow a ConstantDeceleration between 0 and 1 (#66134)

A constant deceleration of x simply means (delta * 1/x). We limited that to
values >= 1.0f for obvious reasons, but can also allow values from 0-1.
That means that ConstantDeceleration is actually a ConstantAcceleration, but
hey, if someone needs it...

X.Org Bug 66134 <http://bugs.freedesktop.org/show_bug.cgi?id=66134>

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
---
 dix/ptrveloc.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'dix')

diff --git a/dix/ptrveloc.c b/dix/ptrveloc.c
index d6fef9cf3..e75300a17 100644
--- a/dix/ptrveloc.c
+++ b/dix/ptrveloc.c
@@ -245,11 +245,10 @@ AccelSetDecelProperty(DeviceIntPtr dev, Atom atom,
     if (checkOnly) {
         if (rc)
             return rc;
-        return (v >= 1.0f) ? Success : BadValue;
+        return (v > 0) ? Success : BadValue;
     }
 
-    if (v >= 1.0f)
-        vel->const_acceleration = 1 / v;
+    vel->const_acceleration = 1 / v;
 
     return Success;
 }
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