--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1172,6 +1172,9 @@ static void end_unlink_async (struct ehc
 		ehci->reclaim = NULL;
 		start_unlink_async (ehci, next);
 	}
+
+	if (ehci->has_synopsys_hc_bug)
+		writel((u32)ehci->async->qh_dma, &ehci->regs->async_next);
 }
 
 /* makes sure the async qh will become idle */
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -130,6 +130,7 @@ struct ehci_hcd {			/* one per controlle
 	unsigned		has_amcc_usb23:1;
 	unsigned		need_io_watchdog:1;
 	unsigned		broken_periodic:1;
+	unsigned		has_synopsys_hc_bug:1; /* Synopsys HC */
 
 	/* required for usb32 quirk */
 	#define OHCI_CTRL_HCFS          (3 << 6)