Commit 87e1dcd4 authored by Peter Chen's avatar Peter Chen Committed by Felipe Balbi
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usb: cdns3: gadget: add CHAIN and ISP bit for sg list use case 



For sg buffer list use case, we need to add ISP for each TRB, and
add CHAIN bit for each TRB except for the last TRB.

Signed-off-by: default avatarPeter Chen <peter.chen@nxp.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent 4e218882

drivers/usb/cdns3/gadget.c

+7 −1
Original line number Diff line number Diff line
@@ -1220,8 +1220,14 @@ static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, 
		else

			priv_req->trb->control = cpu_to_le32(control);



		if (sg_supported)

		if (sg_supported) {

			trb->control |= TRB_ISP;

			/* Don't set chain bit for last TRB */

			if (sg_iter < num_trb - 1)

				trb->control |= TRB_CHAIN;



			s = sg_next(s);

		}



		control = 0;

		++sg_iter;

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