use synchronous tx_pkt for USB_SETUP_TOKEN

diff --git a/src/devices/usb.c b/src/devices/usb.c
index f4bc738c96320c3f886fba925869912d74998458..b885eb1442ccf8f14576f154e7b47aa61c10a3d6 100644 (file)
--- a/src/devices/usb.c
+++ b/src/devices/usb.c
@@ -597,8 +597,12 @@ usb_get_string (struct usb_dev *udev, int ndx)
   sp.value = (SETUP_DESC_STRING << 8) | ndx;
   sp.index = 0;
   sp.length = MAX_USB_STR;
-  udev->host->dev->tx_pkt (udev->h_cfg_eop, USB_TOKEN_SETUP,
-                          &sp, 0, sizeof (sp), NULL, false);
+
+  if (udev->host->dev->tx_pkt (udev->h_cfg_eop, USB_TOKEN_SETUP,
+                              &sp, 0, sizeof (sp), NULL, true) 
+                           != USB_HOST_ERR_NONE) 
+    return NULL;
+
   sz = usb_tx_all (&udev->cfg_eop, &str, MAX_USB_STR, 2, true);
   sz +=
     usb_tx_all (&udev->cfg_eop, str + sz, (uint8_t) (str[0]) - sz, 0, true);