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Commit 762d3a1a authored by Gregory Herrero's avatar Gregory Herrero Committed by Felipe Balbi
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usb: dwc2: host: process all completed urbs 



Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarGregory Herrero <gregory.herrero@intel.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 3f808bda

drivers/usb/dwc2/hcd_ddma.c

+36 −2
Original line number Original line Diff line number Diff line
@@ -940,17 +940,51 @@ static void dwc2_complete_isoc_xfer_ddma(struct dwc2_hsotg *hsotg, 
	list_for_each_entry_safe(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {

	list_for_each_entry_safe(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {

		if (!qtd->in_process)

		if (!qtd->in_process)

			break;

			break;



		/*

		 * Ensure idx corresponds to descriptor where first urb of this

		 * qtd was added. In fact, during isoc desc init, dwc2 may skip

		 * an index if current frame number is already over this index.

		 */

		if (idx != qtd->isoc_td_first) {

			dev_vdbg(hsotg->dev,

				 "try to complete %d instead of %d\n",

				 idx, qtd->isoc_td_first);

			idx = qtd->isoc_td_first;

		}



		do {

		do {

			struct dwc2_qtd *qtd_next;

			u16 cur_idx;



			rc = dwc2_cmpl_host_isoc_dma_desc(hsotg, chan, qtd, qh,

			rc = dwc2_cmpl_host_isoc_dma_desc(hsotg, chan, qtd, qh,

							  idx);

							  idx);

			if (rc < 0)

			if (rc < 0)

				return;

				return;

			idx = dwc2_desclist_idx_inc(idx, qh->interval,

			idx = dwc2_desclist_idx_inc(idx, qh->interval,

						    chan->speed);

						    chan->speed);

			if (rc == DWC2_CMPL_STOP)

			if (!rc)

				goto stop_scan;

				continue;



			if (rc == DWC2_CMPL_DONE)

			if (rc == DWC2_CMPL_DONE)

				break;

				break;



			/* rc == DWC2_CMPL_STOP */



			if (qh->interval >= 32)

				goto stop_scan;



			qh->td_first = idx;

			cur_idx = dwc2_frame_list_idx(hsotg->frame_number);

			qtd_next = list_first_entry(&qh->qtd_list,

						    struct dwc2_qtd,

						    qtd_list_entry);

			if (dwc2_frame_idx_num_gt(cur_idx,

						  qtd_next->isoc_td_last))

				break;



			goto stop_scan;



		} while (idx != qh->td_first);

		} while (idx != qh->td_first);

	}

	}