From 085ded8eef541ee8b347468c42c359d580fcd127 Mon Sep 17 00:00:00 2001
From: ourea1429 <131341319+ourea1429@users.noreply.github.com>
Date: Fri, 28 Apr 2023 21:59:42 +0800
Subject: [PATCH] [winusb.c] add checking after allocating memory for variable
 winusb_device to make sure allocae is successful

---
 components/drivers/usb/usbdevice/class/winusb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/drivers/usb/usbdevice/class/winusb.c b/components/drivers/usb/usbdevice/class/winusb.c
index 906ba44169..f39dab9f06 100644
--- a/components/drivers/usb/usbdevice/class/winusb.c
+++ b/components/drivers/usb/usbdevice/class/winusb.c
@@ -324,6 +324,8 @@ ufunction_t rt_usbd_function_winusb_create(udevice_t device)
 
     /* allocate memory for cdc vcom data */
     winusb_device = (winusb_device_t)rt_malloc(sizeof(struct winusb_device));
+    if (winusb_device == NULL)
+        return RT_NULL;
     rt_memset((void *)winusb_device, 0, sizeof(struct winusb_device));
     func->user_data = (void*)winusb_device;
     /* create an interface object */