From 8b67d6dfec1b5ea9473ed3a2997f18f8d7db1b84 Mon Sep 17 00:00:00 2001
From: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
Date: Mon, 11 Aug 2025 08:32:01 +1000
Subject: [PATCH] [lvgl] fix allocation of reduced size buffer with rotation
 (#10147)

---
 esphome/components/lvgl/lvgl_esphome.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/esphome/components/lvgl/lvgl_esphome.cpp b/esphome/components/lvgl/lvgl_esphome.cpp
index 32930ddec4..7a32691b53 100644
--- a/esphome/components/lvgl/lvgl_esphome.cpp
+++ b/esphome/components/lvgl/lvgl_esphome.cpp
@@ -451,7 +451,8 @@ void LvglComponent::setup() {
   if (buffer == nullptr && this->buffer_frac_ == 0) {
     frac = MIN_BUFFER_FRAC;
     buffer_pixels /= MIN_BUFFER_FRAC;
-    buffer = lv_custom_mem_alloc(buf_bytes / MIN_BUFFER_FRAC);  // NOLINT
+    buf_bytes /= MIN_BUFFER_FRAC;
+    buffer = lv_custom_mem_alloc(buf_bytes);  // NOLINT
   }
   if (buffer == nullptr) {
     this->status_set_error("Memory allocation failure");