Commit 8a7c47fb authored Feb 19, 2020 by Peter Chen Committed by Greg Kroah-Hartman Mar 04, 2020

usb: cdns3: gadget: link trb should point to next request



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: f616c3bd ("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>

parent f8788d86

drivers/usb/cdns3/gadget.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2550,7 +2550,7 @@ 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;

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