From 72a3fb3bc23e794d64727761cd8b9c5ed97e0c86 Mon Sep 17 00:00:00 2001
From: 13038267101 <mo1027728827@qq.com>
Date: Tue, 10 Jan 2023 14:56:27 +0800
Subject: [PATCH] =?UTF-8?q?=E8=8E=B7=E5=8F=96=E7=95=B8=E5=8F=98=E5=80=BC?=
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---
 hgdriver/hgdev/hg_scanner_300.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hgdriver/hgdev/hg_scanner_300.cpp b/hgdriver/hgdev/hg_scanner_300.cpp
index 0a4cc74..0894c89 100644
--- a/hgdriver/hgdev/hg_scanner_300.cpp
+++ b/hgdriver/hgdev/hg_scanner_300.cpp
@@ -857,6 +857,7 @@ int hg_scanner_300::get_devs_distortion_check_val(int& data)
 	int ret = SCANNER_ERR_OK,
 		len = 0;
 	USBCB usbcb = { setting3288dsp::GET_JUST_COF_V ,0,resolution_ };
+	len = sizeof(usbcb);
 	ret = io_->write_bulk(&usbcb, &len);
 	if (ret == SCANNER_ERR_OK)
 	{