From 77067ef783be0e91d64ca3dea7edbfbacb3e1582 Mon Sep 17 00:00:00 2001
From: andig <cpuidle@gmail.com>
Date: Tue, 5 May 2026 08:43:23 +0200
Subject: [PATCH] chore: modernize

---
 core/loadpoint.go       | 3 ++-
 core/loadpoint_mutex.go | 9 ++++-----
 plugin/aa55udp.go       | 2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/core/loadpoint.go b/core/loadpoint.go
index bf46a1df1..b4b962635 100644
--- a/core/loadpoint.go
+++ b/core/loadpoint.go
@@ -7,6 +7,7 @@ import (
 	"reflect"
 	"slices"
 	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
 
@@ -85,7 +86,7 @@ type Loadpoint struct {
 	lpChan   chan<- *Loadpoint      // update requests
 	log      *util.Logger
 
-	rwMutex      int64        // count reentrant RWMutex
+	rwMutex      atomic.Int64 // count reentrant RWMutex
 	sync.RWMutex              // guard status
 	vmu          sync.RWMutex // guard vehicle
 
diff --git a/core/loadpoint_mutex.go b/core/loadpoint_mutex.go
index b5a8cebb5..96d223adf 100644
--- a/core/loadpoint_mutex.go
+++ b/core/loadpoint_mutex.go
@@ -1,12 +1,11 @@
 package core
 
 import (
-	"sync/atomic"
 	"testing"
 )
 
 func (lp *Loadpoint) RLock() {
-	if testing.Testing() && atomic.AddInt64(&lp.rwMutex, 1) > 1 {
+	if testing.Testing() && lp.rwMutex.Add(1) > 1 {
 		panic("reentrant RLock")
 	}
 	lp.RWMutex.RLock()
@@ -14,13 +13,13 @@ func (lp *Loadpoint) RLock() {
 
 func (lp *Loadpoint) RUnlock() {
 	if testing.Testing() {
-		atomic.AddInt64(&lp.rwMutex, -1)
+		lp.rwMutex.Add(-1)
 	}
 	lp.RWMutex.RUnlock()
 }
 
 func (lp *Loadpoint) Lock() {
-	if testing.Testing() && atomic.AddInt64(&lp.rwMutex, 1) > 1 {
+	if testing.Testing() && lp.rwMutex.Add(1) > 1 {
 		panic("reentrant Lock")
 	}
 	lp.RWMutex.Lock()
@@ -28,7 +27,7 @@ func (lp *Loadpoint) Lock() {
 
 func (lp *Loadpoint) Unlock() {
 	if testing.Testing() {
-		atomic.AddInt64(&lp.rwMutex, -1)
+		lp.rwMutex.Add(-1)
 	}
 	lp.RWMutex.Unlock()
 }
diff --git a/plugin/aa55udp.go b/plugin/aa55udp.go
index 1866ba4f5..6e4385ce8 100644
--- a/plugin/aa55udp.go
+++ b/plugin/aa55udp.go
@@ -224,7 +224,7 @@ func modbusCRC16(data []byte) []byte {
 	crc := uint16(0xFFFF)
 	for _, b := range data {
 		crc ^= uint16(b)
-		for i := 0; i < 8; i++ {
+		for range 8 {
 			if crc&0x0001 != 0 {
 				crc = (crc >> 1) ^ 0xA001
 			} else {