FMT_ASSOCIATION = 0x3001,
/* event codes */
+ EVT_CANCEL_TRANSACTION = 0x4001,
EVT_OBJ_ADDED = 0x4002,
EVT_OBJ_REMOVED = 0x4003,
EVT_OBJ_INFO_CHANGED = 0x4007,
int length, uint8_t *data)
{
int ret;
+ MTPState *s = USB_MTP(dev);
+ uint16_t *event = (uint16_t *)data;
- ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
- if (ret >= 0) {
- return;
+ switch (request) {
+ case ClassInterfaceOutRequest | 0x64:
+ if (*event == EVT_CANCEL_TRANSACTION) {
+ g_free(s->result);
+ s->result = NULL;
+ usb_mtp_data_free(s->data_in);
+ s->data_in = NULL;
+ if (s->write_pending) {
+ g_free(s->dataset.filename);
+ s->write_pending = false;
+ }
+ usb_mtp_data_free(s->data_out);
+ s->data_out = NULL;
+ } else {
+ p->status = USB_RET_STALL;
+ }
+ break;
+ default:
+ ret = usb_desc_handle_control(dev, p, request,
+ value, index, length, data);
+ if (ret >= 0) {
+ return;
+ }
}
trace_usb_mtp_stall(dev->addr, "unknown control request");
- p->status = USB_RET_STALL;
}
static void usb_mtp_cancel_packet(USBDevice *dev, USBPacket *p)