usb: dwc_otg_310: pcd: in ep do memory copy after alloc aligned buffer

If more than two consecutive requests queue into in ep, maybe some
requests need alloc temporary aligned buffer, only the first request
will do memory copy to the aligned buffer, but start_next_request()
function missing memory copy, then the transmission of data will be
wrong, so do memory copy after alloc aligned buffer right away.

TEST=rk3288 use rndis gadget function, Linux PC use this command
can't ping: ping IP -s 1473

Change-Id: I1c5339dbb089d8a94d8093baa2a801f54e450267
Signed-off-by: Feng Mingli <[email protected]>

Author: Feng Mingli

drivers/usb/dwc_otg_310/dwc_otg_pcd.c

@@ -2259,11 +2259,14 @@ int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t *pcd, void *ep_handle,
 	req->sent_zlp = zero;
 	req->priv = req_handle;
 	req->dw_align_buf = NULL;
-	if ((dma_buf & 0x3) && GET_CORE_IF(pcd)->dma_enable
-	    && !GET_CORE_IF(pcd)->dma_desc_enable)
+	if ((dma_buf & 0x3) && GET_CORE_IF(pcd)->dma_enable &&
+	    !GET_CORE_IF(pcd)->dma_desc_enable) {
 		req->dw_align_buf = DWC_DEV_DMA_ALLOC_ATOMIC(buflen,
 							     &req->
 							     dw_align_buf_dma);
+		if (req->dw_align_buf && ep->dwc_ep.is_in)
+			dwc_memcpy(req->dw_align_buf, buf, buflen);
+	}
 	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
 
 	/*
@@ -2374,9 +2377,6 @@ int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t *pcd, void *ep_handle,
 
 				/* Setup and start the Transfer */
 				if (req->dw_align_buf) {
-					if (ep->dwc_ep.is_in)
-						dwc_memcpy(req->dw_align_buf,
-							   buf, buflen);
 					ep->dwc_ep.dma_addr =
 					    req->dw_align_buf_dma;
 					ep->dwc_ep.start_xfer_buff =