USB: gadget: queue usb USB_CDC_GET_ENCAPSULATED_RESPONSE message

backport of 41566bcf35a8b23ce4715dadb5acfd1098c1d3e4

commit 0cf4f2de0a0f4100795f38ef894d4910678c74f8 introduced a bug, which
prevents sending an USB_CDC_GET_ENCAPSULATED_RESPONSE message. This
breaks the RNDIS initialization (especially / only Windoze machines
dislike this behavior...).

Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Jan Altenberg <jan.altenberg@linutronix.de>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Vernon Sauder <vernoninhand@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 9e732bff9df0608670dcf88b5db1f6d2f5b95ce2..ba7935d92040561ad9fe4da9ae7210559b6ccf15 100644 (file)
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -1561,6 +1561,7 @@ done_set_intf:
                                memcpy(req->buf, buf, n);
                                req->complete = rndis_response_complete;
                                rndis_free_response(dev->rndis_config, buf);
+                               value = n;
                        }
                        /* else stalls ... spec says to avoid that */
                }