From 68dfb844bd1766707675e46e38442a68c6579b09 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Mon, 9 Feb 2026 04:32:14 -0600
Subject: [PATCH] Future-proof available() check to handle negative return
 values

---
 esphome/components/ld2450/ld2450.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/esphome/components/ld2450/ld2450.cpp b/esphome/components/ld2450/ld2450.cpp
index 5ee6dd6e3d2..7a203f42409 100644
--- a/esphome/components/ld2450/ld2450.cpp
+++ b/esphome/components/ld2450/ld2450.cpp
@@ -276,8 +276,10 @@ void LD2450Component::dump_config() {
 }
 
 void LD2450Component::loop() {
+  // All current UART available() implementations return >= 0,
+  // use <= 0 to future-proof against any that may return negative on error.
   int avail = this->available();
-  if (avail == 0) {
+  if (avail <= 0) {
     return;
   }