Index: sys/dev/usb/ohci.c
===================================================================
RCS file: /cvsroot/src/sys/dev/usb/ohci.c,v
retrieving revision 1.232
diff -u -p -u -r1.232 ohci.c
--- sys/dev/usb/ohci.c	29 Jan 2013 00:00:15 -0000	1.232
+++ sys/dev/usb/ohci.c	22 Mar 2013 11:02:33 -0000
@@ -1731,21 +1750,23 @@ ohci_device_request(usbd_xfer_handle xfe
 	sed = opipe->sed;
 	opipe->u.ctl.length = len;
 
-	/* Update device address and length since they may have changed
-	   during the setup of the control pipe in usbd_new_device(). */
+	/*
+	 * Update device address and length since they may have changed
+	 * during the setup of the control pipe in usbd_new_device().
+	 */
 	/* XXX This only needs to be done once, but it's too early in open. */
 	/* XXXX Should not touch ED here! */
 
 	usb_syncmem(&sed->dma, sed->offs + offsetof(ohci_ed_t, ed_flags),
 	    sizeof(sed->ed.ed_flags),
-	    BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
+	    BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 	sed->ed.ed_flags = HTOO32(
 	 (O32TOH(sed->ed.ed_flags) & ~(OHCI_ED_ADDRMASK | OHCI_ED_MAXPMASK)) |
 	 OHCI_ED_SET_FA(addr) |
 	 OHCI_ED_SET_MAXP(UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize)));
 	usb_syncmem(&sed->dma, sed->offs + offsetof(ohci_ed_t, ed_flags),
 	    sizeof(sed->ed.ed_flags),
-	    BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
+	    BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
 
 	next = stat;
 
@@ -1794,7 +1815,7 @@ ohci_device_request(usbd_xfer_handle xfe
 	stat->len = 0;
 	stat->xfer = xfer;
 	usb_syncmem(&stat->dma, stat->offs, sizeof(stat->td),
-	    BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
+	    BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
 
 #ifdef OHCI_DEBUG
 	if (ohcidebug > 5) {
@@ -1805,11 +1826,15 @@ ohci_device_request(usbd_xfer_handle xfe
 #endif
 
 	/* Insert ED in schedule */
-	sed->ed.ed_tailp = HTOO32(tail->physaddr);
 	usb_syncmem(&sed->dma,
 	    sed->offs + offsetof(ohci_ed_t, ed_tailp),
 	    sizeof(sed->ed.ed_tailp),
 	    BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
+	sed->ed.ed_tailp = HTOO32(tail->physaddr);
+	usb_syncmem(&sed->dma,
+	    sed->offs + offsetof(ohci_ed_t, ed_tailp),
+	    sizeof(sed->ed.ed_tailp),
+	    BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
 	opipe->tail.td = tail;
 	OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
 	if (xfer->timeout && !sc->sc_bus.use_polling) {