| From 8a7c47fb7285b23ca259c888016513d5566fa9e8 Mon Sep 17 00:00:00 2001 |
| From: Peter Chen <peter.chen@nxp.com> |
| Date: Wed, 19 Feb 2020 22:14:54 +0800 |
| Subject: usb: cdns3: gadget: link trb should point to next request |
| |
| From: Peter Chen <peter.chen@nxp.com> |
| |
| commit 8a7c47fb7285b23ca259c888016513d5566fa9e8 upstream. |
| |
| It has marked the dequeue trb as link trb, but its next segment |
| pointer is still itself, it causes the transfer can't go on. Fix |
| it by set its pointer as the trb address for the next request. |
| |
| Fixes: f616c3bda47e ("usb: cdns3: Fix dequeue implementation") |
| Signed-off-by: Peter Chen <peter.chen@nxp.com> |
| Cc: stable <stable@vger.kernel.org> |
| Link: https://lore.kernel.org/r/20200219141455.23257-2-peter.chen@nxp.com |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/usb/cdns3/gadget.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/usb/cdns3/gadget.c |
| +++ b/drivers/usb/cdns3/gadget.c |
| @@ -2107,7 +2107,7 @@ found: |
| /* Update ring only if removed request is on pending_req_list list */ |
| if (req_on_hw_ring) { |
| link_trb->buffer = TRB_BUFFER(priv_ep->trb_pool_dma + |
| - (priv_req->start_trb * TRB_SIZE)); |
| + ((priv_req->end_trb + 1) * TRB_SIZE)); |
| link_trb->control = (link_trb->control & TRB_CYCLE) | |
| TRB_TYPE(TRB_LINK) | TRB_CHAIN; |
| |
