From ad4233d07849ad96096fb84d01b0ed3200030b09 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=83=95=E3=82=A3=E3=83=AB=E3=82=BF=E3=83=BC=E3=83=9A?=
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 <76888457+filterpaper@users.noreply.github.com>
Date: Sun, 13 Jul 2025 23:38:32 +0800
Subject: [PATCH] Clamp reactive offset value (#25489)

* Avoids underflow of the unsigned 8-bit
---
 quantum/rgb_matrix/animations/solid_reactive_anim.h        | 1 +
 quantum/rgb_matrix/animations/solid_reactive_simple_anim.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/quantum/rgb_matrix/animations/solid_reactive_anim.h b/quantum/rgb_matrix/animations/solid_reactive_anim.h
index 67f568ca385..d11dda50c34 100644
--- a/quantum/rgb_matrix/animations/solid_reactive_anim.h
+++ b/quantum/rgb_matrix/animations/solid_reactive_anim.h
@@ -4,6 +4,7 @@ RGB_MATRIX_EFFECT(SOLID_REACTIVE)
 #        ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS
 
 static hsv_t SOLID_REACTIVE_math(hsv_t hsv, uint16_t offset) {
+    if (offset > 255) offset = 255;
 #            ifdef RGB_MATRIX_SOLID_REACTIVE_GRADIENT_MODE
     hsv.h = scale16by8(g_rgb_timer, qadd8(rgb_matrix_config.speed, 8) >> 4);
 #            endif
diff --git a/quantum/rgb_matrix/animations/solid_reactive_simple_anim.h b/quantum/rgb_matrix/animations/solid_reactive_simple_anim.h
index f20f1b1fb6a..22ba42296fa 100644
--- a/quantum/rgb_matrix/animations/solid_reactive_simple_anim.h
+++ b/quantum/rgb_matrix/animations/solid_reactive_simple_anim.h
@@ -4,6 +4,7 @@ RGB_MATRIX_EFFECT(SOLID_REACTIVE_SIMPLE)
 #        ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS
 
 static hsv_t SOLID_REACTIVE_SIMPLE_math(hsv_t hsv, uint16_t offset) {
+    if (offset > 255) offset = 255;
 #            ifdef RGB_MATRIX_SOLID_REACTIVE_GRADIENT_MODE
     hsv.h = scale16by8(g_rgb_timer, qadd8(rgb_matrix_config.speed, 8) >> 4);
 #            endif