usb-host: trace emulated requests

Add tracepoint to track completion of emulated control requests.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/usb/host-linux.c

@@ -1035,13 +1035,19 @@ static int usb_host_handle_control(USBDevice *dev, USBPacket *p,
 
     switch (request) {
     case DeviceOutRequest | USB_REQ_SET_ADDRESS:
-        return usb_host_set_address(s, value);
+        ret = usb_host_set_address(s, value);
+        trace_usb_host_req_emulated(s->bus_num, s->addr, ret);
+        return ret;
 
     case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
-        return usb_host_set_config(s, value & 0xff);
+        ret = usb_host_set_config(s, value & 0xff);
+        trace_usb_host_req_emulated(s->bus_num, s->addr, ret);
+        return ret;
 
     case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
-        return usb_host_set_interface(s, index, value);
+        ret = usb_host_set_interface(s, index, value);
+        trace_usb_host_req_emulated(s->bus_num, s->addr, ret);
+        return ret;
     }
 
     /* The rest are asynchronous */

trace-events

@@ -315,6 +315,7 @@ usb_host_release_interfaces(int bus, int addr) "dev %d:%d"
 usb_host_req_control(int bus, int addr, int req, int value, int index) "dev %d:%d, req 0x%x, value %d, index %d"
 usb_host_req_data(int bus, int addr, int in, int ep, int size) "dev %d:%d, in %d, ep %d, size %d"
 usb_host_req_complete(int bus, int addr, int status) "dev %d:%d, status %d"
+usb_host_req_emulated(int bus, int addr, int status) "dev %d:%d, status %d"
 usb_host_urb_submit(int bus, int addr, void *aurb, int length, int more) "dev %d:%d, aurb %p, length %d, more %d"
 usb_host_urb_complete(int bus, int addr, void *aurb, int status, int length, int more) "dev %d:%d, aurb %p, status %d, length %d, more %d"
 usb_host_ep_set_halt(int bus, int addr, int ep) "dev %d:%d, ep %d"