From de844391bda3e08b6a5e8d88d53b9afcea4ed292 Mon Sep 17 00:00:00 2001
From: sakumisu <1203593632@qq.com>
Date: Sun, 4 Jan 2026 21:50:44 +0800
Subject: [PATCH] fix(demo): fix cdc ecm string check

Signed-off-by: sakumisu <1203593632@qq.com>
---
 demo/cdc_ecm_template.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/demo/cdc_ecm_template.c b/demo/cdc_ecm_template.c
index 7c6e98aa..7063d75e 100644
--- a/demo/cdc_ecm_template.c
+++ b/demo/cdc_ecm_template.c
@@ -83,7 +83,7 @@ static const uint8_t *device_quality_descriptor_callback(uint8_t speed)
 
 static const char *string_descriptor_callback(uint8_t speed, uint8_t index)
 {
-    if (index > 3) {
+    if (index > 4) {
         return NULL;
     }
     return string_descriptors[index];