From f851e1f90e698998d7037daa5378ce6049c23ea7 Mon Sep 17 00:00:00 2001
From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Fri, 7 May 2010 15:23:21 +0200
Subject: [PATCH] Fix RTC slew handler

The frequency adjustment needs to be done in the opposite direction.
---
 rtc_linux.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rtc_linux.c b/rtc_linux.c
index 463d8b4..4f8723c 100644
--- a/rtc_linux.c
+++ b/rtc_linux.c
@@ -314,7 +314,7 @@ slew_samples
   for (i=0; i<n_samples; i++) {
     UTI_DiffTimevalsToDouble(&elapsed, cooked, system_times + i);
 
-    delta_time = -(elapsed * dfreq) - doffset;
+    delta_time = elapsed * dfreq - doffset;
 
     UTI_AddDoubleToTimeval(system_times + i, delta_time, system_times + i);
 
@@ -325,7 +325,7 @@ slew_samples
 
   if (coefs_valid) {
     coef_seconds_fast += doffset;
-    coef_gain_rate = 1.0 - (1.0 + dfreq) * (1.0 - coef_gain_rate);
+    coef_gain_rate = (1.0 + dfreq) * (1.0 + coef_gain_rate) - 1.0;
   }
 
 #if 0