From cada7c8944de0cb1de17ff0a181cee48608c230c Mon Sep 17 00:00:00 2001
From: maria <dalfonso@cern.ch>
Date: Fri, 9 Jul 2021 14:51:22 +0200
Subject: [PATCH] protection when detector is out

---
 RecoLocalCalo/HcalRecProducers/src/MahiGPU.cu | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/RecoLocalCalo/HcalRecProducers/src/MahiGPU.cu b/RecoLocalCalo/HcalRecProducers/src/MahiGPU.cu
index 3dba47ba50191..724b80b3f8fc5 100644
--- a/RecoLocalCalo/HcalRecProducers/src/MahiGPU.cu
+++ b/RecoLocalCalo/HcalRecProducers/src/MahiGPU.cu
@@ -1048,6 +1048,9 @@ namespace hcal {
                     cudaStream_t cudaStream) {
       auto const totalChannels = inputGPU.f01HEDigis.size + inputGPU.f5HBDigis.size + inputGPU.f3HBDigis.size;
 
+      // protections when the detector is out
+      if(totalChannels==0) return;
+
       // FIXME: may be move this assignment to emphasize this more clearly
       // FIXME: number of channels for output might change given that
       //   some channesl might be filtered out