usb: dwc3: add a workaround for too small OUT requests
DWC3 hangs on OUT requests smaller than maxpacket size,
so HACK the request length to be at least equal to maxpacket size.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index de4d908..7c342c6 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -975,6 +975,14 @@
req->epnum = dep->number;
/*
+ * DWC3 hangs on OUT requests smaller than maxpacket size,
+ * so HACK the request length
+ */
+ if (dep->direction == 0 &&
+ req->request.length < dep->endpoint.maxpacket)
+ req->request.length = dep->endpoint.maxpacket;
+
+ /*
* We only add to our list of requests now and
* start consuming the list once we get XferNotReady
* IRQ.