diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 2b70277..d0fd0be 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -711,6 +711,142 @@ ehci_hub_descriptor (
 }
 
 /*-------------------------------------------------------------------------*/
+#define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06
+
+static void usb_ehset_completion(struct urb *urb)
+{
+	struct completion  *done = urb->context;
+
+	complete(done);
+}
+static int submit_single_step_set_feature(
+	struct usb_hcd	*hcd,
+	struct urb	*urb,
+	int		is_setup
+);
+
+/*
+ * Allocate and initialize a control URB. This request will be used by the
+ * EHSET SINGLE_STEP_SET_FEATURE test in which the DATA and STATUS stages
+ * of the GetDescriptor request are sent 15 seconds after the SETUP stage.
+ * Return NULL if failed.
+ */
+static struct urb *request_single_step_set_feature_urb(
+	struct usb_device	*udev,
+	void			*dr,
+	void			*buf,
+	struct completion	*done
+) {
+	struct urb *urb;
+	struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+	struct usb_host_endpoint *ep;
+
+	urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!urb)
+		return NULL;
+
+	urb->pipe = usb_rcvctrlpipe(udev, 0);
+	ep = (usb_pipein(urb->pipe) ? udev->ep_in : udev->ep_out)
+				[usb_pipeendpoint(urb->pipe)];
+	if (!ep) {
+		usb_free_urb(urb);
+		return NULL;
+	}
+
+	urb->ep = ep;
+	urb->dev = udev;
+	urb->setup_packet = (void *)dr;
+	urb->transfer_buffer = buf;
+	urb->transfer_buffer_length = USB_DT_DEVICE_SIZE;
+	urb->complete = usb_ehset_completion;
+	urb->status = -EINPROGRESS;
+	urb->actual_length = 0;
+	urb->transfer_flags = URB_DIR_IN;
+	usb_get_urb(urb);
+	atomic_inc(&urb->use_count);
+	atomic_inc(&urb->dev->urbnum);
+	urb->setup_dma = dma_map_single(
+			hcd->self.controller,
+			urb->setup_packet,
+			sizeof(struct usb_ctrlrequest),
+			DMA_TO_DEVICE);
+	urb->transfer_dma = dma_map_single(
+			hcd->self.controller,
+			urb->transfer_buffer,
+			urb->transfer_buffer_length,
+			DMA_FROM_DEVICE);
+	urb->context = done;
+	return urb;
+}
+
+static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
+{
+	int retval = -ENOMEM;
+	struct usb_ctrlrequest *dr;
+	struct urb *urb;
+	struct usb_device *udev;
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	struct usb_device_descriptor *buf;
+	DECLARE_COMPLETION_ONSTACK(done);
+
+	/* Obtain udev of the rhub's child port */
+	udev = usb_hub_find_child(hcd->self.root_hub, port);
+	if (!udev) {
+		ehci_err(ehci, "No device attached to the RootHub\n");
+		return -ENODEV;
+	}
+	buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
+	if (!dr) {
+		kfree(buf);
+		return -ENOMEM;
+	}
+
+	/* Fill Setup packet for GetDescriptor */
+	dr->bRequestType = USB_DIR_IN;
+	dr->bRequest = USB_REQ_GET_DESCRIPTOR;
+	dr->wValue = cpu_to_le16(USB_DT_DEVICE << 8);
+	dr->wIndex = 0;
+	dr->wLength = cpu_to_le16(USB_DT_DEVICE_SIZE);
+	urb = request_single_step_set_feature_urb(udev, dr, buf, &done);
+	if (!urb)
+		goto cleanup;
+
+	/* Submit just the SETUP stage */
+	retval = submit_single_step_set_feature(hcd, urb, 1);
+	if (retval)
+		goto out1;
+	if (!wait_for_completion_timeout(&done, msecs_to_jiffies(2000))) {
+		usb_kill_urb(urb);
+		retval = -ETIMEDOUT;
+		ehci_err(ehci, "%s SETUP stage timed out on ep0\n", __func__);
+		goto out1;
+	}
+	msleep(15 * 1000);
+
+	/* Complete remaining DATA and STATUS stages using the same URB */
+	urb->status = -EINPROGRESS;
+	usb_get_urb(urb);
+	atomic_inc(&urb->use_count);
+	atomic_inc(&urb->dev->urbnum);
+	retval = submit_single_step_set_feature(hcd, urb, 0);
+	if (!retval && !wait_for_completion_timeout(&done,
+						msecs_to_jiffies(2000))) {
+		usb_kill_urb(urb);
+		retval = -ETIMEDOUT;
+		ehci_err(ehci, "%s IN stage timed out on ep0\n", __func__);
+	}
+out1:
+	usb_free_urb(urb);
+cleanup:
+	kfree(dr);
+	kfree(buf);
+	return retval;
+}
+/*-------------------------------------------------------------------------*/
 
 static int ehci_hub_control (
 	struct usb_hcd	*hcd,
@@ -1091,7 +1227,13 @@ static int ehci_hub_control (
 		 * about the EHCI-specific stuff.
 		 */
 		case USB_PORT_FEAT_TEST:
-			if (!selector || selector > 5)
+			if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) {
+				spin_unlock_irqrestore(&ehci->lock, flags);
+				retval = ehset_single_step_set_feature(hcd,
+									wIndex);
+				spin_lock_irqsave(&ehci->lock, flags);
+				break;
+			} else if (!selector || selector > 5)
 				goto error;
 			spin_unlock_irqrestore(&ehci->lock, flags);
 			ehci_quiesce(ehci);
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index d34b399..702a0e9 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1144,6 +1144,107 @@ submit_async (
 }
 
 /*-------------------------------------------------------------------------*/
+/*
+ * This function creates the qtds and submits them for the
+ * SINGLE_STEP_SET_FEATURE Test.
+ * This is done in two parts: first SETUP req for GetDesc is sent then
+ * 15 seconds later, the IN stage for GetDesc starts to req data from dev
+ *
+ * is_setup : i/p arguement decides which of the two stage needs to be
+ * performed; TRUE - SETUP and FALSE - IN+STATUS
+ * Returns 0 if success
+ */
+static int submit_single_step_set_feature(
+	struct usb_hcd  *hcd,
+	struct urb      *urb,
+	int             is_setup
+) {
+	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
+	struct list_head	qtd_list;
+	struct list_head	*head;
+
+	struct ehci_qtd		*qtd, *qtd_prev;
+	dma_addr_t		buf;
+	int			len, maxpacket;
+	u32			token;
+
+	INIT_LIST_HEAD(&qtd_list);
+	head = &qtd_list;
+
+	/* URBs map to sequences of QTDs:  one logical transaction */
+	qtd = ehci_qtd_alloc(ehci, GFP_KERNEL);
+	if (unlikely(!qtd))
+		return -1;
+	list_add_tail(&qtd->qtd_list, head);
+	qtd->urb = urb;
+
+	token = QTD_STS_ACTIVE;
+	token |= (EHCI_TUNE_CERR << 10);
+
+	len = urb->transfer_buffer_length;
+	/*
+	 * Check if the request is to perform just the SETUP stage (getDesc)
+	 * as in SINGLE_STEP_SET_FEATURE test, DATA stage (IN) happens
+	 * 15 secs after the setup
+	 */
+	if (is_setup) {
+		/* SETUP pid */
+		qtd_fill(ehci, qtd, urb->setup_dma,
+				sizeof(struct usb_ctrlrequest),
+				token | (2 /* "setup" */ << 8), 8);
+
+		submit_async(ehci, urb, &qtd_list, GFP_ATOMIC);
+		return 0; /*Return now; we shall come back after 15 seconds*/
+	}
+
+	/*
+	 * IN: data transfer stage:  buffer setup : start the IN txn phase for
+	 * the get_Desc SETUP which was sent 15seconds back
+	 */
+	token ^= QTD_TOGGLE;   /*We need to start IN with DATA-1 Pid-sequence*/
+	buf = urb->transfer_dma;
+
+	token |= (1 /* "in" */ << 8);  /*This is IN stage*/
+
+	maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, 0));
+
+	qtd_fill(ehci, qtd, buf, len, token, maxpacket);
+
+	/*
+	 * Our IN phase shall always be a short read; so keep the queue running
+	 * and let it advance to the next qtd which zero length OUT status
+	 */
+	qtd->hw_alt_next = EHCI_LIST_END(ehci);
+
+	/* STATUS stage for GetDesc control request */
+	token ^= 0x0100;        /* "in" <--> "out"  */
+	token |= QTD_TOGGLE;    /* force DATA1 */
+
+	qtd_prev = qtd;
+	qtd = ehci_qtd_alloc(ehci, GFP_ATOMIC);
+	if (unlikely(!qtd))
+		goto cleanup;
+	qtd->urb = urb;
+	qtd_prev->hw_next = QTD_NEXT(ehci, qtd->qtd_dma);
+	list_add_tail(&qtd->qtd_list, head);
+
+	/* dont fill any data in such packets */
+	qtd_fill(ehci, qtd, 0, 0, token, 0);
+
+	/* by default, enable interrupt on urb completion */
+	if (likely(!(urb->transfer_flags & URB_NO_INTERRUPT)))
+		qtd->hw_token |= cpu_to_hc32(ehci, QTD_IOC);
+
+	submit_async(ehci, urb, &qtd_list, GFP_KERNEL);
+
+	return 0;
+
+cleanup:
+	qtd_list_free(ehci, urb, head);
+	return -1;
+}
+
+/*-------------------------------------------------------------------------*/
 
 static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh)
 {
diff --git a/drivers/usb/misc/ehset.c b/drivers/usb/misc/ehset.c
index d2864b3..c31b4a3 100644
--- a/drivers/usb/misc/ehset.c
+++ b/drivers/usb/misc/ehset.c
@@ -96,7 +96,25 @@ static int ehset_probe(struct usb_interface *intf,
 		kfree(buf);
 		break;
 	case TEST_SINGLE_STEP_SET_FEATURE:
-		/* unsupported for now */
+		/*
+		 * GetDescriptor SETUP request -> 15secs delay -> IN & STATUS
+		 *
+		 * Note, this test is only supported on root hubs since the
+		 * SetPortFeature handling can only be done inside the HCD's
+		 * hub_control callback function.
+		 */
+		if (hub_udev != dev->bus->root_hub) {
+			dev_err(&intf->dev, "SINGLE_STEP_SET_FEATURE test only supported on root hub\n");
+			break;
+		}
+
+		ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
+					USB_REQ_SET_FEATURE, USB_RT_PORT,
+					USB_PORT_FEAT_TEST,
+					(6 << 8) | portnum,
+					NULL, 0, 60 * 1000);
+
+		break;
 	default:
 		dev_err(&intf->dev, "%s: unsupported PID: 0x%x\n",
 			__func__, test_pid);
