From 5646c781c88ab0f0427f23102bea889a835bd378 Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vladzzag@gmail.com>
Date: Tue, 7 Jan 2020 15:16:05 +0200
Subject: [PATCH] [nightcolor] Fix division by zero

Summary:
If qAbs(targetTemp - m_currentTemp) is less than TEMPERATURE_STEP, then
it will result in a division by zero.

FIXED-IN: 5.17.5
BUG: 415359

Reviewers: #kwin, apol

Reviewed By: apol

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D26493
---
 colorcorrection/manager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/colorcorrection/manager.cpp b/colorcorrection/manager.cpp
index 50b304ca0e..79e9a1428c 100644
--- a/colorcorrection/manager.cpp
+++ b/colorcorrection/manager.cpp
@@ -408,7 +408,7 @@ void Manager::resetSlowUpdateTimer()
         }
 
         // calculate interval such as temperature is changed by TEMPERATURE_STEP K per timer timeout
-        int interval = availTime / (qAbs(targetTemp - m_currentTemp) / TEMPERATURE_STEP);
+        int interval = availTime * TEMPERATURE_STEP / qAbs(targetTemp - m_currentTemp);
         if (interval == 0) {
             interval = 1;
         }