From a21057a744cbdbc8318afd9de1f7c59b97c18de3 Mon Sep 17 00:00:00 2001
From: clydebarrow <2366188+clydebarrow@users.noreply.github.com>
Date: Thu, 30 Oct 2025 06:04:33 +1000
Subject: [PATCH] Relax memory order to acquire

---
 esphome/components/usb_host/usb_host_client.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/esphome/components/usb_host/usb_host_client.cpp b/esphome/components/usb_host/usb_host_client.cpp
index 2456b0c742..dc216a209d 100644
--- a/esphome/components/usb_host/usb_host_client.cpp
+++ b/esphome/components/usb_host/usb_host_client.cpp
@@ -348,7 +348,7 @@ TransferRequest *USBClient::get_trq_() {
     // Slot i appears available, try to claim it atomically
     trq_bitmask_t desired = mask | lsb;
 
-    if (this->trq_in_use_.compare_exchange_weak(mask, desired)) {
+    if (this->trq_in_use_.compare_exchange_weak(mask, desired, std::memory_order::acquire)) {
       auto i = __builtin_ctz(lsb);  // count trailing zeroes
       // Successfully claimed slot i - prepare the TransferRequest
       auto *trq = &this->requests_[i];