From c42d68812c57aa5153d8e44507d032a51ce0c97c Mon Sep 17 00:00:00 2001
From: Bernhard Kirchen <schlimmchen@posteo.net>
Date: Thu, 7 Mar 2024 21:16:07 +0100
Subject: [PATCH] DPL limit scaling: prevent division by zero

this check was removed on error when moving the scaling code into its
own function.
---
 src/PowerLimiter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PowerLimiter.cpp b/src/PowerLimiter.cpp
index ec3542ad..a128f958 100644
--- a/src/PowerLimiter.cpp
+++ b/src/PowerLimiter.cpp
@@ -655,7 +655,7 @@ static int32_t scalePowerLimit(std::shared_ptr<InverterAbstract> inverter, int32
         }
     }
 
-    if (dcProdChnls == dcTotalChnls) { return newLimit; }
+    if (dcProdChnls == 0 || dcProdChnls == dcTotalChnls) { return newLimit; }
 
     MessageOutput.printf("[DPL::scalePowerLimit] %d channels total, %d producing "
             "channels, scaling power limit\r\n", dcTotalChnls, dcProdChnls);