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Commit 48dac4e4 authored by Grigor Tovmasyan's avatar Grigor Tovmasyan Committed by Felipe Balbi
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usb: dwc2: Update target (u)frame calculation 



In service interval based scheduling target (u)frame must be
set as a last frame in this the service interval.

Acked-by: default avatarMinas Harutyunyan <hminas@synopsys.com>
Signed-off-by: default avatarGrigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 9d630b9c

drivers/usb/dwc2/gadget.c

+17 −0
Original line number Diff line number Diff line
@@ -2830,6 +2830,23 @@ static void dwc2_gadget_handle_nak(struct dwc2_hsotg_ep *hs_ep) 
		if (using_desc_dma(hsotg)) {

			hs_ep->target_frame = hsotg->frame_number;

			dwc2_gadget_incr_frame_num(hs_ep);



			/* In service interval mode target_frame must

			 * be set to last (u)frame of the service interval.

			 */

			if (hsotg->params.service_interval) {

				/* Set target_frame to the first (u)frame of

				 * the service interval

				 */

				hs_ep->target_frame &= ~hs_ep->interval + 1;



				/* Set target_frame to the last (u)frame of

				 * the service interval

				 */

				dwc2_gadget_incr_frame_num(hs_ep);

				dwc2_gadget_dec_frame_num_by_one(hs_ep);

			}



			dwc2_gadget_start_isoc_ddma(hs_ep);

			return;

		}