--- zzzz-none-000/linux-3.10.107/drivers/usb/host/imx21-hcd.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/usb/host/imx21-hcd.c	2021-02-04 17:41:59.000000000 +0000
@@ -62,6 +62,10 @@
 
 #include "imx21-hcd.h"
 
+#ifdef CONFIG_DYNAMIC_DEBUG
+#define DEBUG
+#endif
+
 #ifdef DEBUG
 #define DEBUG_LOG_FRAME(imx21, etd, event) \
 	(etd)->event##_frame = readl((imx21)->regs + USBH_FRMNUB)
@@ -809,26 +813,36 @@
 
 	/* calculate frame */
 	cur_frame = imx21_hc_get_frame(hcd);
-	if (urb->transfer_flags & URB_ISO_ASAP) {
-		if (list_empty(&ep_priv->td_list))
-			urb->start_frame = cur_frame + 5;
-		else
-			urb->start_frame = list_entry(
-				ep_priv->td_list.prev,
-				struct td, list)->frame + urb->interval;
-	}
-	urb->start_frame = wrap_frame(urb->start_frame);
-	if (frame_after(cur_frame, urb->start_frame)) {
-		dev_dbg(imx21->dev,
-			"enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
-			urb->start_frame, cur_frame,
-			(urb->transfer_flags & URB_ISO_ASAP) != 0);
-		urb->start_frame = wrap_frame(cur_frame + 1);
+	i = 0;
+	if (list_empty(&ep_priv->td_list)) {
+		urb->start_frame = wrap_frame(cur_frame + 5);
+	} else {
+		urb->start_frame = wrap_frame(list_entry(ep_priv->td_list.prev,
+				struct td, list)->frame + urb->interval);
+
+		if (frame_after(cur_frame, urb->start_frame)) {
+			dev_dbg(imx21->dev,
+				"enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
+				urb->start_frame, cur_frame,
+				(urb->transfer_flags & URB_ISO_ASAP) != 0);
+			i = DIV_ROUND_UP(wrap_frame(
+					cur_frame - urb->start_frame),
+					urb->interval);
+
+			/* Treat underruns as if URB_ISO_ASAP was set */
+			if ((urb->transfer_flags & URB_ISO_ASAP) ||
+					i >= urb->number_of_packets) {
+				urb->start_frame = wrap_frame(urb->start_frame
+						+ i * urb->interval);
+				i = 0;
+			}
+		}
 	}
 
 	/* set up transfers */
+	urb_priv->isoc_remaining = urb->number_of_packets - i;
 	td = urb_priv->isoc_td;
-	for (i = 0; i < urb->number_of_packets; i++, td++) {
+	for (; i < urb->number_of_packets; i++, td++) {
 		unsigned int offset = urb->iso_frame_desc[i].offset;
 		td->ep = ep;
 		td->urb = urb;
@@ -840,7 +854,6 @@
 		list_add_tail(&td->list, &ep_priv->td_list);
 	}
 
-	urb_priv->isoc_remaining = urb->number_of_packets;
 	dev_vdbg(imx21->dev, "setup %d packets for iso frame %d->%d\n",
 		urb->number_of_packets, urb->start_frame, td->frame);
 
@@ -1161,11 +1174,11 @@
 
 	dev_vdbg(imx21->dev,
 		"enqueue urb=%p ep=%p len=%d "
-		"buffer=%p dma=%08X setupBuf=%p setupDma=%08X\n",
+		"buffer=%p dma=%pad setupBuf=%p setupDma=%pad\n",
 		urb, ep,
 		urb->transfer_buffer_length,
-		urb->transfer_buffer, urb->transfer_dma,
-		urb->setup_packet, urb->setup_dma);
+		urb->transfer_buffer, &urb->transfer_dma,
+		urb->setup_packet, &urb->setup_dma);
 
 	if (usb_pipeisoc(urb->pipe))
 		return imx21_hc_urb_enqueue_isoc(hcd, ep, urb, mem_flags);
@@ -1461,7 +1474,7 @@
 			      struct usb_hub_descriptor *desc)
 {
 	struct imx21 *imx21 = hcd_to_imx21(hcd);
-	desc->bDescriptorType = 0x29;	/* HUB descriptor */
+	desc->bDescriptorType = USB_DT_HUB; /* HUB descriptor */
 	desc->bHubContrCurrent = 0;
 
 	desc->bNbrPorts = readl(imx21->regs + USBH_ROOTHUBA)
@@ -1469,9 +1482,8 @@
 	desc->bDescLength = 9;
 	desc->bPwrOn2PwrGood = 0;
 	desc->wHubCharacteristics = (__force __u16) cpu_to_le16(
-		0x0002 |	/* No power switching */
-		0x0010 |	/* No over current protection */
-		0);
+		HUB_CHAR_NO_LPSM |	/* No power switching */
+		HUB_CHAR_NO_OCPM);	/* No over current protection */
 
 	desc->u.hs.DeviceRemovable[0] = 1 << 1;
 	desc->u.hs.DeviceRemovable[1] = ~0;
@@ -1851,7 +1863,7 @@
 	imx21 = hcd_to_imx21(hcd);
 	imx21->hcd = hcd;
 	imx21->dev = &pdev->dev;
-	imx21->pdata = pdev->dev.platform_data;
+	imx21->pdata = dev_get_platdata(&pdev->dev);
 	if (!imx21->pdata)
 		imx21->pdata = &default_pdata;
 
@@ -1897,6 +1909,7 @@
 		dev_err(imx21->dev, "usb_add_hcd() returned %d\n", ret);
 		goto failed_add_hcd;
 	}
+	device_wakeup_enable(hcd->self.controller);
 
 	return 0;
 
@@ -1917,7 +1930,7 @@
 
 static struct platform_driver imx21_hcd_driver = {
 	.driver = {
-		   .name = (char *)hcd_name,
+		   .name = hcd_name,
 		   },
 	.probe = imx21_probe,
 	.remove = imx21_remove,