update: check class->hport validity
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@@ -32,7 +32,12 @@ static struct usbh_cdc_ecm g_cdc_ecm_class;
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static int usbh_cdc_ecm_set_eth_packet_filter(struct usbh_cdc_ecm *cdc_ecm_class, uint16_t filter_value)
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{
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struct usb_setup_packet *setup = cdc_ecm_class->hport->setup;
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struct usb_setup_packet *setup;
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if (!cdc_ecm_class || !cdc_ecm_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = cdc_ecm_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
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setup->bRequest = CDC_REQUEST_SET_ETHERNET_PACKET_FILTER;
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