From ce9bc3aaa12968095fe3d1392420a84a8f14331b Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sun, 29 Mar 2026 11:00:42 -1000
Subject: [PATCH] [api] Use iovec path for write_frame_ to avoid inlining
 write_raw_ in cold handshake code

---
 esphome/components/api/api_frame_helper_noise.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/esphome/components/api/api_frame_helper_noise.cpp b/esphome/components/api/api_frame_helper_noise.cpp
index 0471713c54..e78f021743 100644
--- a/esphome/components/api/api_frame_helper_noise.cpp
+++ b/esphome/components/api/api_frame_helper_noise.cpp
@@ -539,12 +539,12 @@ APIError APINoiseFrameHelper::write_frame_(const uint8_t *data, uint16_t len) {
   header[1] = (uint8_t) (len >> 8);
   header[2] = (uint8_t) len;
 
-  if (len == 0) {
-    return this->write_raw_(header, 3);  // Just header
-  }
   struct iovec iov[2];
   iov[0].iov_base = header;
   iov[0].iov_len = 3;
+  if (len == 0) {
+    return this->write_raw_(iov, 1, 3);  // Just header
+  }
   iov[1].iov_base = const_cast<uint8_t *>(data);
   iov[1].iov_len = len;