3 files changed, 14 insertions, 6 deletions

diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index 335ee699fd85..ba52be473027 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -192,17 +192,19 @@ ehci_hcd_ppc_of_probe(struct platform_device *op, const struct of_device_id *mat
         }
 
         rv = usb_add_hcd(hcd, irq, 0);
-        if (rv == 0)
-                return 0;
+        if (rv)
+                goto err_ehci;
+
+        return 0;
 
+err_ehci:
+        if (ehci->has_amcc_usb23)
+                iounmap(ehci->ohci_hcctrl_reg);
         iounmap(hcd->regs);
 err_ioremap:
         irq_dispose_mapping(irq);
 err_irq:
         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-
-        if (ehci->has_amcc_usb23)
-                iounmap(ehci->ohci_hcctrl_reg);
 err_rmr:
         usb_put_hcd(hcd);
 
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index d1a3dfc9a408..bdba8c5d844a 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -829,6 +829,7 @@ static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh,
          * almost immediately. With ISP1761, this register requires a delay of
          * 195ns between a write and subsequent read (see section 15.1.1.3).
          */
+        mmiowb();
         ndelay(195);
         skip_map = isp1760_readl(hcd->regs + HC_ATL_PTD_SKIPMAP_REG);
 
@@ -870,6 +871,7 @@ static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh,
          * almost immediately. With ISP1761, this register requires a delay of
          * 195ns between a write and subsequent read (see section 15.1.1.3).
          */
+        mmiowb();
         ndelay(195);
         skip_map = isp1760_readl(hcd->regs + HC_INT_PTD_SKIPMAP_REG);
 
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index bc3f4f427065..48e60d166ff0 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -131,7 +131,7 @@ static void next_trb(struct xhci_hcd *xhci,
                 *seg = (*seg)->next;
                 *trb = ((*seg)->trbs);
         } else {
-                *trb = (*trb)++;
+                (*trb)++;
         }
 }
 
@@ -1551,6 +1551,10 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
         /* calc actual length */
         if (ep->skip) {
                 td->urb->iso_frame_desc[idx].actual_length = 0;
+                /* Update ring dequeue pointer */
+                while (ep_ring->dequeue != td->last_trb)
+                        inc_deq(xhci, ep_ring, false);
+                inc_deq(xhci, ep_ring, false);
                 return finish_td(xhci, td, event_trb, event, ep, status, true);
         }