usb: cdnsp: fix issue with ZLP - added TD_SIZE = 1

Patch modifies the TD_SIZE in TRB before ZLP TRB.
The TD_SIZE in TRB before ZLP TRB must be set to 1 to force
processing ZLP TRB by controller.

cc: <[e-mail]>
Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver")
Signed-off-by: Pawel Laszczak <[e-mail]>
Reviewed-by: Peter Chen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/cdns3/cdnsp-ring.c

···
 			      int trb_buff_len,
 			      unsigned int td_total_len,
 			      struct cdnsp_request *preq,
-			      bool more_trbs_coming)
+			      bool more_trbs_coming,
+			      bool zlp)
 {
 	u32 maxp, total_packet_count;
+
+	/* Before ZLP driver needs set TD_SIZE = 1. */
+	if (zlp)
+		return 1;
 
 	/* One TRB with a zero-length data packet. */
 	if (!more_trbs_coming || (transferred == 0 && trb_buff_len == 0) ||
···
 		/* Set the TRB length, TD size, and interrupter fields. */
 		remainder = cdnsp_td_remainder(pdev, enqd_len, trb_buff_len,
 					       full_len, preq,
-					       more_trbs_coming);
+					       more_trbs_coming,
+					       zero_len_trb);
 
 		length_field = TRB_LEN(trb_buff_len) | TRB_TD_SIZE(remainder) |
 			TRB_INTR_TARGET(0);
···
 
 	if (preq->request.length > 0) {
 		remainder = cdnsp_td_remainder(pdev, 0, preq->request.length,
-					       preq->request.length, preq, 1);
+					       preq->request.length, preq, 1, 0);
 
 		length_field = TRB_LEN(preq->request.length) |
 				TRB_TD_SIZE(remainder) | TRB_INTR_TARGET(0);
···
 		/* Set the TRB length, TD size, & interrupter fields. */
 		remainder = cdnsp_td_remainder(pdev, running_total,
 					       trb_buff_len, td_len, preq,
-					       more_trbs_coming);
+					       more_trbs_coming, 0);
 
 		length_field = TRB_LEN(trb_buff_len) | TRB_INTR_TARGET(0);