remove noise for demo

[qemu] / hw / usb-serial.c

diff --git a/hw/usb-serial.c b/hw/usb-serial.c
index a6a756d..5208482 100644 (file)
--- a/hw/usb-serial.c
+++ b/hw/usb-serial.c
@@ -554,11 +554,9 @@ USBDevice *usb_serial_init(const char *filename)
     }
     filename++;
     s = qemu_mallocz(sizeof(USBSerialState));
-    if (!s)
-        return NULL;
 
     snprintf(label, sizeof(label), "usbserial%d", index++);
-    cdrv = qemu_chr_open(label, filename);
+    cdrv = qemu_chr_open(label, filename, NULL);
     if (!cdrv)
         goto fail;
     s->cs = cdrv;