usb/dev-mtp: Fix use of uninitialized values

[mirror_qemu.git] / hw / usb / dev-mtp.c

diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index 560c61c7c17ec28f87506e003cd11af246dcb752..b0ab6a7912e1ed3d78a9f8d33f13cc6c8eb96af7 100644 (file)
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -1017,12 +1017,16 @@ static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c,
 static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c,
                                            MTPObject *o)
 {
-    MTPData *d = usb_mtp_data_alloc(c);
+    MTPData *d;
     off_t offset;
 
+    if (c->argc <= 2) {
+        return NULL;
+    }
     trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path,
                                         c->argv[1], c->argv[2]);
 
+    d = usb_mtp_data_alloc(c);
     d->fd = open(o->path, O_RDONLY);
     if (d->fd == -1) {
         usb_mtp_data_free(d);