diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 37d056e..f44fc4e 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -288,6 +288,7 @@
 	idx = 0;
 	while (idx < 5) {
 		td->qt_buffer[idx] = cpu_to_hc32(addr);
+		td->qt_buffer_hi[idx] = 0;
 		next = (addr + 4096) & ~4095;
 		delta = next - addr;
 		if (delta >= sz)
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 6fae8ba..d3aa55b 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -166,12 +166,16 @@
 
 /* Queue Element Transfer Descriptor (qTD). */
 struct qTD {
-	uint32_t qt_next;
+	/* this part defined by EHCI spec */
+	uint32_t qt_next;		/* see EHCI 3.5.1 */
 #define	QT_NEXT_TERMINATE	1
-	uint32_t qt_altnext;
-	uint32_t qt_token;
-	uint32_t qt_buffer[5];
-};
+	uint32_t qt_altnext;		/* see EHCI 3.5.2 */
+	uint32_t qt_token;		/* see EHCI 3.5.3 */
+	uint32_t qt_buffer[5];		/* see EHCI 3.5.4 */
+	uint32_t qt_buffer_hi[5];	/* Appendix B */
+	/* pad struct for 32 byte alignment */
+	uint32_t unused[3];
+} __attribute__ ((aligned (32)));
 
 /* Queue Head (QH). */
 struct QH {