usb: gadget: adb: Force OUT(or RX) requests size to be MAX
Synopsys USB3 Controller (DWC3) has a restriction where size
of OUT requests (TRB) queued to the controller must be aligned
with the endpoint's max packet size.
Since, request buffer is already allocated with the size of
ADB_BULK_BUFFER_SIZE, hence, request this much data from the
controller.
Change-Id: Ibba1a627c9e34b92ddcb44ee2260a004a2b78dfc
Signed-off-by: Ido Shayevitz <idos@codeaurora.org>
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
diff --git a/drivers/usb/gadget/f_adb.c b/drivers/usb/gadget/f_adb.c
index 9778673..045fc6c 100644
--- a/drivers/usb/gadget/f_adb.c
+++ b/drivers/usb/gadget/f_adb.c
@@ -301,7 +301,7 @@
requeue_req:
/* queue a request */
req = dev->rx_req;
- req->length = count;
+ req->length = ADB_BULK_BUFFER_SIZE;
dev->rx_done = 0;
ret = usb_ep_queue(dev->ep_out, req, GFP_ATOMIC);
if (ret < 0) {