Merge 3.6-rc6 into usb-next

This resolves the merge problems with:
	drivers/usb/dwc3/gadget.c
	drivers/usb/musb/tusb6010.c
that had been seen in linux-next.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

22 files changed, 365 insertions, 36 deletions

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 65a55abb791..5f0cb417b73 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -109,12 +109,14 @@ static struct usb_driver wdm_driver;
 /* return intfdata if we own the interface, else look up intf in the list */
 static struct wdm_device *wdm_find_device(struct usb_interface *intf)
 {
-	struct wdm_device *desc = NULL;
+	struct wdm_device *desc;
 
 	spin_lock(&wdm_device_list_lock);
 	list_for_each_entry(desc, &wdm_device_list, device_list)
 		if (desc->intf == intf)
-			break;
+			goto found;
+	desc = NULL;
+found:
 	spin_unlock(&wdm_device_list_lock);
 
 	return desc;
@@ -122,12 +124,14 @@ static struct wdm_device *wdm_find_device(struct usb_interface *intf)
 
 static struct wdm_device *wdm_find_device_by_minor(int minor)
 {
-	struct wdm_device *desc = NULL;
+	struct wdm_device *desc;
 
 	spin_lock(&wdm_device_list_lock);
 	list_for_each_entry(desc, &wdm_device_list, device_list)
 		if (desc->intf->minor == minor)
-			break;
+			goto found;
+	desc = NULL;
+found:
 	spin_unlock(&wdm_device_list_lock);
 
 	return desc;
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 2dbb5154f35..fdefd9c7f7a 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -71,6 +71,10 @@ static const struct usb_device_id usb_quirk_list[] = {
 	{ USB_DEVICE(0x04b4, 0x0526), .driver_info =
 			USB_QUIRK_CONFIG_INTF_STRINGS },
 
+	/* Microchip Joss Optical infrared touchboard device */
+	{ USB_DEVICE(0x04d8, 0x000c), .driver_info =
+			USB_QUIRK_CONFIG_INTF_STRINGS },
+
 	/* Samsung Android phone modem - ID conflict with SPH-I500 */
 	{ USB_DEVICE(0x04e8, 0x6601), .driver_info =
 			USB_QUIRK_CONFIG_INTF_STRINGS },
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index bed2c161546..b415c0c859d 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -440,16 +440,21 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 		dev_err(dev, "missing IRQ\n");
 		return -ENODEV;
 	}
-	dwc->xhci_resources[1] = *res;
+	dwc->xhci_resources[1].start = res->start;
+	dwc->xhci_resources[1].end = res->end;
+	dwc->xhci_resources[1].flags = res->flags;
+	dwc->xhci_resources[1].name = res->name;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		dev_err(dev, "missing memory resource\n");
 		return -ENODEV;
 	}
-	dwc->xhci_resources[0] = *res;
+	dwc->xhci_resources[0].start = res->start;
 	dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
 					DWC3_XHCI_REGS_END;
+	dwc->xhci_resources[0].flags = res->flags;
+	dwc->xhci_resources[0].name = res->name;
 
 	 /*
 	  * Request memory region but exclude xHCI regs,
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 1bba97ba218..d7da073a23f 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -792,7 +792,6 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
 		transferred = min_t(u32, ur->length,
 				transfer_size - length);
 		memcpy(ur->buf, dwc->ep0_bounce, transferred);
-		dwc->ep0_bounced = false;
 	} else {
 		transferred = ur->length - length;
 	}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index ba444e7f9c4..c9e729a4bf6 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -263,8 +263,11 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
 	if (req->request.status == -EINPROGRESS)
 		req->request.status = status;
 
-	usb_gadget_unmap_request(&dwc->gadget, &req->request,
-			req->direction);
+	if (dwc->ep0_bounced && dep->number == 0)
+		dwc->ep0_bounced = false;
+	else
+		usb_gadget_unmap_request(&dwc->gadget, &req->request,
+				req->direction);
 
 	dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
 			req, dep->name, req->request.actual,
@@ -1017,6 +1020,7 @@ static void __dwc3_gadget_start_isoc(struct dwc3 *dwc,
 	if (list_empty(&dep->request_list)) {
 		dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
 			dep->name);
+		dep->flags |= DWC3_EP_PENDING_REQUEST;
 		return;
 	}
 
@@ -1078,6 +1082,19 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 	 *
 	 */
 	if (dep->flags & DWC3_EP_PENDING_REQUEST) {
+		int	ret;
+
+		/*
+		 * If xfernotready is already elapsed and it is a case
+		 * of isoc transfer, then issue END TRANSFER, so that
+		 * you can receive xfernotready again and can have
+		 * notion of current microframe.
+		 */
+		if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
+			dwc3_stop_active_transfer(dwc, dep->number);
+			return 0;
+		}
+
 		ret = __dwc3_gadget_kick_transfer(dep, 0, true);
 		if (ret && ret != -EBUSY)
 			dev_dbg(dwc->dev, "%s: failed to kick transfers\n",
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index af931282843..89d90b5fb78 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -475,8 +475,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
 	unsigned long	flags;
 
 	if (!_ep || !ep
-			|| !desc || ep->ep.desc
-			|| _ep->name == ep0name
+			|| !desc || _ep->name == ep0name
 			|| desc->bDescriptorType != USB_DT_ENDPOINT
 			|| (maxpacket = usb_endpoint_maxp(desc)) == 0
 			|| maxpacket > ep->maxpacket) {
@@ -531,7 +530,6 @@ ok:
 	tmp |= AT91_UDP_EPEDS;
 	__raw_writel(tmp, ep->creg);
 
-	ep->ep.desc = desc;
 	ep->ep.maxpacket = maxpacket;
 
 	/*
@@ -1636,7 +1634,6 @@ static int at91_start(struct usb_gadget *gadget,
 	udc->driver = driver;
 	udc->gadget.dev.driver = &driver->driver;
 	udc->gadget.dev.of_node = udc->pdev->dev.of_node;
-	dev_set_drvdata(&udc->gadget.dev, &driver->driver);
 	udc->enabled = 1;
 	udc->selfpowered = 1;
 
@@ -1657,7 +1654,6 @@ static int at91_stop(struct usb_gadget *gadget,
 	spin_unlock_irqrestore(&udc->lock, flags);
 
 	udc->gadget.dev.driver = NULL;
-	dev_set_drvdata(&udc->gadget.dev, NULL);
 	udc->driver = NULL;
 
 	DBG("unbound from %s\n", driver->driver.name);
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 91916f693ff..0f7541be28f 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -1918,6 +1918,27 @@ done:
 	return retval;
 }
 
+/* usb 3.0 root hub device descriptor */
+struct {
+	struct usb_bos_descriptor bos;
+	struct usb_ss_cap_descriptor ss_cap;
+} __packed usb3_bos_desc = {
+
+	.bos = {
+		.bLength		= USB_DT_BOS_SIZE,
+		.bDescriptorType	= USB_DT_BOS,
+		.wTotalLength		= cpu_to_le16(sizeof(usb3_bos_desc)),
+		.bNumDeviceCaps		= 1,
+	},
+	.ss_cap = {
+		.bLength		= USB_DT_USB_SS_CAP_SIZE,
+		.bDescriptorType	= USB_DT_DEVICE_CAPABILITY,
+		.bDevCapabilityType	= USB_SS_CAP_TYPE,
+		.wSpeedSupported	= cpu_to_le16(USB_5GBPS_OPERATION),
+		.bFunctionalitySupport	= ilog2(USB_5GBPS_OPERATION),
+	},
+};
+
 static inline void
 ss_hub_descriptor(struct usb_hub_descriptor *desc)
 {
@@ -2008,6 +2029,18 @@ static int dummy_hub_control(
 		else
 			hub_descriptor((struct usb_hub_descriptor *) buf);
 		break;
+
+	case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
+		if (hcd->speed != HCD_USB3)
+			goto error;
+
+		if ((wValue >> 8) != USB_DT_BOS)
+			goto error;
+
+		memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc));
+		retval = sizeof(usb3_bos_desc);
+		break;
+
 	case GetHubStatus:
 		*(__le32 *) buf = cpu_to_le32(0);
 		break;
@@ -2505,10 +2538,8 @@ static int dummy_hcd_probe(struct platform_device *pdev)
 	hs_hcd->has_tt = 1;
 
 	retval = usb_add_hcd(hs_hcd, 0, 0);
-	if (retval != 0) {
-		usb_put_hcd(hs_hcd);
-		return retval;
-	}
+	if (retval)
+		goto put_usb2_hcd;
 
 	if (mod_data.is_super_speed) {
 		ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev,
@@ -2527,6 +2558,8 @@ static int dummy_hcd_probe(struct platform_device *pdev)
 put_usb3_hcd:
 	usb_put_hcd(ss_hcd);
 dealloc_usb2_hcd:
+	usb_remove_hcd(hs_hcd);
+put_usb2_hcd:
 	usb_put_hcd(hs_hcd);
 	the_controller.hs_hcd = the_controller.ss_hcd = NULL;
 	return retval;
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 8adc79d1b40..829aba75a6d 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -34,11 +34,15 @@
 /* Debugging ****************************************************************/
 
 #ifdef VERBOSE_DEBUG
+#ifndef pr_vdebug
 #  define pr_vdebug pr_debug
+#endif /* pr_vdebug */
 #  define ffs_dump_mem(prefix, ptr, len) \
 	print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len)
 #else
+#ifndef pr_vdebug
 #  define pr_vdebug(...)                 do { } while (0)
+#endif /* pr_vdebug */
 #  define ffs_dump_mem(prefix, ptr, len) do { } while (0)
 #endif /* VERBOSE_DEBUG */
 
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index 5b3f5fffea9..da6d479ff9a 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -132,11 +132,15 @@ static unsigned	n_ports;
 
 
 #ifdef VERBOSE_DEBUG
+#ifndef pr_vdebug
 #define pr_vdebug(fmt, arg...) \
 	pr_debug(fmt, ##arg)
+#endif /* pr_vdebug */
 #else
+#ifndef pr_vdebig
 #define pr_vdebug(fmt, arg...) \
 	({ if (0) pr_debug(fmt, ##arg); })
+#endif /* pr_vdebug */
 #endif
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 9bc39ca460c..4b66374bdc8 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -128,9 +128,17 @@ qh_refresh (struct ehci_hcd *ehci, struct ehci_qh *qh)
 	else {
 		qtd = list_entry (qh->qtd_list.next,
 				struct ehci_qtd, qtd_list);
-		/* first qtd may already be partially processed */
-		if (cpu_to_hc32(ehci, qtd->qtd_dma) == qh->hw->hw_current)
+		/*
+		 * first qtd may already be partially processed.
+		 * If we come here during unlink, the QH overlay region
+		 * might have reference to the just unlinked qtd. The
+		 * qtd is updated in qh_completions(). Update the QH
+		 * overlay here.
+		 */
+		if (cpu_to_hc32(ehci, qtd->qtd_dma) == qh->hw->hw_current) {
+			qh->hw->hw_qtd_next = qtd->hw_next;
 			qtd = NULL;
+		}
 	}
 
 	if (qtd)
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index a665b3eaa74..aaa8d2bce21 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -570,6 +570,16 @@ static int __devinit ohci_hcd_at91_drv_probe(struct platform_device *pdev)
 
 	if (pdata) {
 		at91_for_each_port(i) {
+			/*
+			 * do not configure PIO if not in relation with
+			 * real USB port on board
+			 */
+			if (i >= pdata->ports) {
+				pdata->vbus_pin[i] = -EINVAL;
+				pdata->overcurrent_pin[i] = -EINVAL;
+				break;
+			}
+
 			if (!gpio_is_valid(pdata->vbus_pin[i]))
 				continue;
 			gpio = pdata->vbus_pin[i];
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index c5e9e4a76f1..966d1484ee7 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -75,7 +75,9 @@
 #define	NB_PIF0_PWRDOWN_1	0x01100013
 
 #define USB_INTEL_XUSB2PR      0xD0
+#define USB_INTEL_USB2PRM      0xD4
 #define USB_INTEL_USB3_PSSEN   0xD8
+#define USB_INTEL_USB3PRM      0xDC
 
 static struct amd_chipset_info {
 	struct pci_dev	*nb_dev;
@@ -772,10 +774,18 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev)
 		return;
 	}
 
-	ports_available = 0xffffffff;
+	/* Read USB3PRM, the USB 3.0 Port Routing Mask Register
+	 * Indicate the ports that can be changed from OS.
+	 */
+	pci_read_config_dword(xhci_pdev, USB_INTEL_USB3PRM,
+			&ports_available);
+
+	dev_dbg(&xhci_pdev->dev, "Configurable ports to enable SuperSpeed: 0x%x\n",
+			ports_available);
+
 	/* Write USB3_PSSEN, the USB 3.0 Port SuperSpeed Enable
-	 * Register, to turn on SuperSpeed terminations for all
-	 * available ports.
+	 * Register, to turn on SuperSpeed terminations for the
+	 * switchable ports.
 	 */
 	pci_write_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN,
 			cpu_to_le32(ports_available));
@@ -785,7 +795,16 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev)
 	dev_dbg(&xhci_pdev->dev, "USB 3.0 ports that are now enabled "
 			"under xHCI: 0x%x\n", ports_available);
 
-	ports_available = 0xffffffff;
+	/* Read XUSB2PRM, xHCI USB 2.0 Port Routing Mask Register
+	 * Indicate the USB 2.0 ports to be controlled by the xHCI host.
+	 */
+
+	pci_read_config_dword(xhci_pdev, USB_INTEL_USB2PRM,
+			&ports_available);
+
+	dev_dbg(&xhci_pdev->dev, "Configurable USB 2.0 ports to hand over to xCHI: 0x%x\n",
+			ports_available);
+
 	/* Write XUSB2PR, the xHC USB 2.0 Port Routing Register, to
 	 * switch the USB 2.0 power and data lines over to the xHCI
 	 * host.
@@ -822,12 +841,12 @@ static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev)
 	void __iomem *op_reg_base;
 	u32 val;
 	int timeout;
+	int len = pci_resource_len(pdev, 0);
 
 	if (!mmio_resource_enabled(pdev, 0))
 		return;
 
-	base = ioremap_nocache(pci_resource_start(pdev, 0),
-				pci_resource_len(pdev, 0));
+	base = ioremap_nocache(pci_resource_start(pdev, 0), len);
 	if (base == NULL)
 		return;
 
@@ -837,9 +856,17 @@ static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev)
 	 */
 	ext_cap_offset = xhci_find_next_cap_offset(base, XHCI_HCC_PARAMS_OFFSET);
 	do {
+		if ((ext_cap_offset + sizeof(val)) > len) {
+			/* We're reading garbage from the controller */
+			dev_warn(&pdev->dev,
+				 "xHCI controller failing to respond");
+			return;
+		}
+
 		if (!ext_cap_offset)
 			/* We've reached the end of the extended capabilities */
 			goto hc_init;
+
 		val = readl(base + ext_cap_offset);
 		if (XHCI_EXT_CAPS_ID(val) == XHCI_EXT_CAPS_LEGACY)
 			break;
@@ -870,9 +897,10 @@ static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev)
 	/* Disable any BIOS SMIs and clear all SMI events*/
 	writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET);
 
+hc_init:
 	if (usb_is_intel_switchable_xhci(pdev))
 		usb_enable_xhci_ports(pdev);
-hc_init:
+
 	op_reg_base = base + XHCI_HC_LENGTH(readl(base));
 
 	/* Wait for the host controller to be ready before writing any
diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h
index ef004a5de20..7f69a39163c 100644
--- a/drivers/usb/host/pci-quirks.h
+++ b/drivers/usb/host/pci-quirks.h
@@ -15,6 +15,7 @@ void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);
 static inline void usb_amd_quirk_pll_disable(void) {}
 static inline void usb_amd_quirk_pll_enable(void) {}
 static inline void usb_amd_dev_put(void) {}
+static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {}
 #endif  /* CONFIG_PCI */
 
 #endif  /*  __LINUX_USB_PCI_QUIRKS_H  */
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 5896f0588d4..aa90ad4d4fd 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -493,11 +493,48 @@ static void xhci_hub_report_link_state(u32 *status, u32 status_reg)
 		 * when this bit is set.
 		 */
 		pls |= USB_PORT_STAT_CONNECTION;
+	} else {
+		/*
+		 * If CAS bit isn't set but the Port is already at
+		 * Compliance Mode, fake a connection so the USB core
+		 * notices the Compliance state and resets the port.
+		 * This resolves an issue generated by the SN65LVPE502CP
+		 * in which sometimes the port enters compliance mode
+		 * caused by a delay on the host-device negotiation.
+		 */
+		if (pls == USB_SS_PORT_LS_COMP_MOD)
+			pls |= USB_PORT_STAT_CONNECTION;
 	}
+
 	/* update status field */
 	*status |= pls;
 }
 
+/*
+ * Function for Compliance Mode Quirk.
+ *
+ * This Function verifies if all xhc USB3 ports have entered U0, if so,
+ * the compliance mode timer is deleted. A port won't enter
+ * compliance mode if it has previously entered U0.
+ */
+void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, u16 wIndex)
+{
+	u32 all_ports_seen_u0 = ((1 << xhci->num_usb3_ports)-1);
+	bool port_in_u0 = ((status & PORT_PLS_MASK) == XDEV_U0);
+
+	if (!(xhci->quirks & XHCI_COMP_MODE_QUIRK))
+		return;
+
+	if ((xhci->port_status_u0 != all_ports_seen_u0) && port_in_u0) {
+		xhci->port_status_u0 |= 1 << wIndex;
+		if (xhci->port_status_u0 == all_ports_seen_u0) {
+			del_timer_sync(&xhci->comp_mode_recovery_timer);
+			xhci_dbg(xhci, "All USB3 ports have entered U0 already!\n");
+			xhci_dbg(xhci, "Compliance Mode Recovery Timer Deleted.\n");
+		}
+	}
+}
+
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		u16 wIndex, char *buf, u16 wLength)
 {
@@ -651,6 +688,11 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		/* Update Port Link State for super speed ports*/
 		if (hcd->speed == HCD_USB3) {
 			xhci_hub_report_link_state(&status, temp);
+			/*
+			 * Verify if all USB3 Ports Have entered U0 already.
+			 * Delete Compliance Mode Timer if so.
+			 */
+			xhci_del_comp_mod_timer(xhci, temp, wIndex);
 		}
 		if (bus_state->port_c_suspend & (1 << wIndex))
 			status |= 1 << USB_PORT_FEAT_C_SUSPEND;
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 689bc18b051..df90fe51b4a 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -118,7 +118,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
 		goto put_hcd;
 	}
 
-	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
 	if (!hcd->regs) {
 		dev_dbg(&pdev->dev, "error mapping memory\n");
 		ret = -EFAULT;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 66bc5c3985f..a4b0ce13fa0 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -26,6 +26,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/slab.h>
+#include <linux/dmi.h>
 
 #include "xhci.h"
 
@@ -399,6 +400,95 @@ static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
 
 #endif
 
+static void compliance_mode_recovery(unsigned long arg)
+{
+	struct xhci_hcd *xhci;
+	struct usb_hcd *hcd;
+	u32 temp;
+	int i;
+
+	xhci = (struct xhci_hcd *)arg;
+
+	for (i = 0; i < xhci->num_usb3_ports; i++) {
+		temp = xhci_readl(xhci, xhci->usb3_ports[i]);
+		if ((temp & PORT_PLS_MASK) == USB_SS_PORT_LS_COMP_MOD) {
+			/*
+			 * Compliance Mode Detected. Letting USB Core
+			 * handle the Warm Reset
+			 */
+			xhci_dbg(xhci, "Compliance Mode Detected->Port %d!\n",
+					i + 1);
+			xhci_dbg(xhci, "Attempting Recovery routine!\n");
+			hcd = xhci->shared_hcd;
+
+			if (hcd->state == HC_STATE_SUSPENDED)
+				usb_hcd_resume_root_hub(hcd);
+
+			usb_hcd_poll_rh_status(hcd);
+		}
+	}
+
+	if (xhci->port_status_u0 != ((1 << xhci->num_usb3_ports)-1))
+		mod_timer(&xhci->comp_mode_recovery_timer,
+			jiffies + msecs_to_jiffies(COMP_MODE_RCVRY_MSECS));
+}
+
+/*
+ * Quirk to work around issue generated by the SN65LVPE502CP USB3.0 re-driver
+ * that causes ports behind that hardware to enter compliance mode sometimes.
+ * The quirk creates a timer that polls every 2 seconds the link state of
+ * each host controller's port and recovers it by issuing a Warm reset
+ * if Compliance mode is detected, otherwise the port will become "dead" (no
+ * device connections or disconnections will be detected anymore). Becasue no
+ * status event is generated when entering compliance mode (per xhci spec),
+ * this quirk is needed on systems that have the failing hardware installed.
+ */
+static void compliance_mode_recovery_timer_init(struct xhci_hcd *xhci)
+{
+	xhci->port_status_u0 = 0;
+	init_timer(&xhci->comp_mode_recovery_timer);
+
+	xhci->comp_mode_recovery_timer.data = (unsigned long) xhci;
+	xhci->comp_mode_recovery_timer.function = compliance_mode_recovery;
+	xhci->comp_mode_recovery_timer.expires = jiffies +
+			msecs_to_jiffies(COMP_MODE_RCVRY_MSECS);
+
+	set_timer_slack(&xhci->comp_mode_recovery_timer,
+			msecs_to_jiffies(COMP_MODE_RCVRY_MSECS));
+	add_timer(&xhci->comp_mode_recovery_timer);
+	xhci_dbg(xhci, "Compliance Mode Recovery Timer Initialized.\n");
+}
+
+/*
+ * This function identifies the systems that have installed the SN65LVPE502CP
+ * USB3.0 re-driver and that need the Compliance Mode Quirk.
+ * Systems:
+ * Vendor: Hewlett-Packard -> System Models: Z420, Z620 and Z820
+ */
+static bool compliance_mode_recovery_timer_quirk_check(void)
+{
+	const char *dmi_product_name, *dmi_sys_vendor;
+
+	dmi_product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
+	dmi_sys_vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+
+	if (!(strstr(dmi_sys_vendor, "Hewlett-Packard")))
+		return false;
+
+	if (strstr(dmi_product_name, "Z420") ||
+			strstr(dmi_product_name, "Z620") ||
+			strstr(dmi_product_name, "Z820"))
+		return true;
+
+	return false;
+}
+
+static int xhci_all_ports_seen_u0(struct xhci_hcd *xhci)
+{
+	return (xhci->port_status_u0 == ((1 << xhci->num_usb3_ports)-1));
+}
+
+
 /*
  * Initialize memory for HCD and xHC (one-time init).
  *
@@ -422,6 +512,12 @@ int xhci_init(struct usb_hcd *hcd)
 	retval = xhci_mem_init(xhci, GFP_KERNEL);
 	xhci_dbg(xhci, "Finished xhci_init\n");
 
+	/* Initializing Compliance Mode Recovery Data If Needed */
+	if (compliance_mode_recovery_timer_quirk_check()) {
+		xhci->quirks |= XHCI_COMP_MODE_QUIRK;
+		compliance_mode_recovery_timer_init(xhci);
+	}
+
 	return retval;
 }
 
@@ -631,6 +727,11 @@ void xhci_stop(struct usb_hcd *hcd)
 	del_timer_sync(&xhci->event_ring_timer);
 #endif
 
+	/* Deleting Compliance Mode Recovery Timer */
+	if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) &&
+			(!(xhci_all_ports_seen_u0(xhci))))
+		del_timer_sync(&xhci->comp_mode_recovery_timer);
+
 	if (xhci->quirks & XHCI_AMD_PLL_FIX)
 		usb_amd_dev_put();
 
@@ -661,7 +762,7 @@ void xhci_shutdown(struct usb_hcd *hcd)
 {
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 
-	if (xhci->quirks && XHCI_SPURIOUS_REBOOT)
+	if (xhci->quirks & XHCI_SPURIOUS_REBOOT)
 		usb_disable_xhci_ports(to_pci_dev(hcd->self.controller));
 
 	spin_lock_irq(&xhci->lock);
@@ -808,6 +909,16 @@ int xhci_suspend(struct xhci_hcd *xhci)
 	}
 	spin_unlock_irq(&xhci->lock);
 
+	/*
+	 * Deleting Compliance Mode Recovery Timer because the xHCI Host
+	 * is about to be suspended.
+	 */
+	if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) &&
+			(!(xhci_all_ports_seen_u0(xhci)))) {
+		del_timer_sync(&xhci->comp_mode_recovery_timer);
+		xhci_dbg(xhci, "Compliance Mode Recovery Timer Deleted!\n");
+	}
+
 	/* step 5: remove core well power */
 	/* synchronize irq when using MSI-X */
 	xhci_msix_sync_irqs(xhci);
@@ -940,6 +1051,16 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 		usb_hcd_resume_root_hub(hcd);
 		usb_hcd_resume_root_hub(xhci->shared_hcd);
 	}
+
+	/*
+	 * If system is subject to the Quirk, Compliance Mode Timer needs to
+	 * be re-initialized Always after a system resume. Ports are subject
+	 * to suffer the Compliance Mode issue again. It doesn't matter if
+	 * ports have entered previously to U0 before system's suspension.
+	 */
+	if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
+		compliance_mode_recovery_timer_init(xhci);
+
 	return retval;
 }
 #endif	/* CONFIG_PM */
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index e81ccfa3552..e44e2d3c83b 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1510,6 +1510,7 @@ struct xhci_hcd {
 #define XHCI_LPM_SUPPORT	(1 << 11)
 #define XHCI_INTEL_HOST		(1 << 12)
 #define XHCI_SPURIOUS_REBOOT	(1 << 13)
+#define XHCI_COMP_MODE_QUIRK	(1 << 14)
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
 	/* There are two roothubs to keep track of bus suspend info for */
@@ -1526,6 +1527,11 @@ struct xhci_hcd {
 	unsigned		sw_lpm_support:1;
 	/* support xHCI 1.0 spec USB2 hardware LPM */
 	unsigned		hw_lpm_support:1;
+	/* Compliance Mode Recovery Data */
+	struct timer_list	comp_mode_recovery_timer;
+	u32			port_status_u0;
+/* Compliance Mode Timer Triggered every 2 seconds */
+#define COMP_MODE_RCVRY_MSECS 2000
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index d385e8a8187..3df6a76b851 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2177,7 +2177,7 @@ static int musb_urb_enqueue(
 	 * we only have work to do in the former case.
 	 */
 	spin_lock_irqsave(&musb->lock, flags);
-	if (hep->hcpriv) {
+	if (hep->hcpriv || !next_urb(qh)) {
 		/* some concurrent activity submitted another urb to hep...
 		 * odd, rare, error prone, but legal.
 		 */
diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c
index 444b9ee0649..0fc6ca6bc60 100644
--- a/drivers/usb/musb/musbhsdma.c
+++ b/drivers/usb/musb/musbhsdma.c
@@ -388,7 +388,7 @@ dma_controller_create(struct musb *musb, void __iomem *base)
 	struct platform_device *pdev = to_platform_device(dev);
 	int irq = platform_get_irq_byname(pdev, "dma");
 
-	if (irq == 0) {
+	if (irq <= 0) {
 		dev_err(dev, "No DMA interrupt line!\n");
 		return NULL;
 	}
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 6d77d2cb938..dcc05fdb01b 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -703,6 +703,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_NZR_SEM_USB_PID) },
 	{ USB_DEVICE(ICOM_VID, ICOM_ID_1_PID) },
 	{ USB_DEVICE(ICOM_VID, ICOM_OPC_U_UC_PID) },
 	{ USB_DEVICE(ICOM_VID, ICOM_ID_RP2C1_PID) },
@@ -803,13 +804,32 @@ static struct usb_device_id id_table_combined [] = {
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(ADI_VID, ADI_GNICEPLUS_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
-	{ USB_DEVICE(MICROCHIP_VID, MICROCHIP_USB_BOARD_PID) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(MICROCHIP_VID, MICROCHIP_USB_BOARD_PID,
+					USB_CLASS_VENDOR_SPEC,
+					USB_SUBCLASS_VENDOR_SPEC, 0x00) },
 	{ USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
 	{ USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
 	{ USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
+	{ USB_DEVICE(FTDI_VID, PI_C865_PID) },
+	{ USB_DEVICE(FTDI_VID, PI_C857_PID) },
+	{ USB_DEVICE(PI_VID, PI_C866_PID) },
+	{ USB_DEVICE(PI_VID, PI_C663_PID) },
+	{ USB_DEVICE(PI_VID, PI_C725_PID) },
+	{ USB_DEVICE(PI_VID, PI_E517_PID) },
+	{ USB_DEVICE(PI_VID, PI_C863_PID) },
 	{ USB_DEVICE(PI_VID, PI_E861_PID) },
+	{ USB_DEVICE(PI_VID, PI_C867_PID) },
+	{ USB_DEVICE(PI_VID, PI_E609_PID) },
+	{ USB_DEVICE(PI_VID, PI_E709_PID) },
+	{ USB_DEVICE(PI_VID, PI_100F_PID) },
+	{ USB_DEVICE(PI_VID, PI_1011_PID) },
+	{ USB_DEVICE(PI_VID, PI_1012_PID) },
+	{ USB_DEVICE(PI_VID, PI_1013_PID) },
+	{ USB_DEVICE(PI_VID, PI_1014_PID) },
+	{ USB_DEVICE(PI_VID, PI_1015_PID) },
+	{ USB_DEVICE(PI_VID, PI_1016_PID) },
 	{ USB_DEVICE(KONDO_VID, KONDO_USB_SERIAL_PID) },
 	{ USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
 	{ USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 5dd96ca6c38..41fe5826100 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -75,6 +75,9 @@
 #define FTDI_OPENDCC_GATEWAY_PID	0xBFDB
 #define FTDI_OPENDCC_GBM_PID	0xBFDC
 
+/* NZR SEM 16+ USB (http://www.nzr.de) */
+#define FTDI_NZR_SEM_USB_PID	0xC1E0	/* NZR SEM-LOG16+ */
+
 /*
  * RR-CirKits LocoBuffer USB (http://www.rr-cirkits.com)
  */
@@ -539,7 +542,10 @@
 /*
  * Microchip Technology, Inc.
  *
- * MICROCHIP_VID (0x04D8) and MICROCHIP_USB_BOARD_PID (0x000A) are also used by:
+ * MICROCHIP_VID (0x04D8) and MICROCHIP_USB_BOARD_PID (0x000A) are
+ * used by single function CDC ACM class based firmware demo
+ * applications.  The VID/PID has also been used in firmware
+ * emulating FTDI serial chips by:
  * Hornby Elite - Digital Command Control Console
  * http://www.hornby.com/hornby-dcc/controllers/
  */
@@ -791,8 +797,27 @@
  * Physik Instrumente
  * http://www.physikinstrumente.com/en/products/
  */
+/* These two devices use the VID of FTDI */
+#define PI_C865_PID	0xe0a0  /* PI C-865 Piezomotor Controller */
+#define PI_C857_PID	0xe0a1  /* PI Encoder Trigger Box */
+
 #define PI_VID              0x1a72  /* Vendor ID */
-#define PI_E861_PID         0x1008  /* E-861 piezo controller USB connection */
+#define PI_C866_PID	0x1000  /* PI C-866 Piezomotor Controller */
+#define PI_C663_PID	0x1001  /* PI C-663 Mercury-Step */
+#define PI_C725_PID	0x1002  /* PI C-725 Piezomotor Controller */
+#define PI_E517_PID	0x1005  /* PI E-517 Digital Piezo Controller Operation Module */
+#define PI_C863_PID	0x1007  /* PI C-863 */
+#define PI_E861_PID	0x1008  /* PI E-861 Piezomotor Controller */
+#define PI_C867_PID	0x1009  /* PI C-867 Piezomotor Controller */
+#define PI_E609_PID	0x100D  /* PI E-609 Digital Piezo Controller */
+#define PI_E709_PID	0x100E  /* PI E-709 Digital Piezo Controller */
+#define PI_100F_PID	0x100F  /* PI Digital Piezo Controller */
+#define PI_1011_PID	0x1011  /* PI Digital Piezo Controller */
+#define PI_1012_PID	0x1012  /* PI Motion Controller */
+#define PI_1013_PID	0x1013  /* PI Motion Controller */
+#define PI_1014_PID	0x1014  /* PI Device */
+#define PI_1015_PID	0x1015  /* PI Device */
+#define PI_1016_PID	0x1016  /* PI Digital Servo Module */
 
 /*
  * Kondo Kagaku Co.Ltd.
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 3229368eaab..53bd5f491c5 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -886,8 +886,6 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff),
 	  .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1012, 0xff, 0xff, 0xff) },
-	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1018, 0xff, 0xff, 0xff),
-	  .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1057, 0xff, 0xff, 0xff) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1058, 0xff, 0xff, 0xff) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1059, 0xff, 0xff, 0xff) },
@@ -1092,6 +1090,10 @@ static const struct usb_device_id option_ids[] = {
 	 .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist },
 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff),
 	 .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist },
+	{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) },
+	{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) },
+	{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) },
+
 	{ USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_H10) },
 	{ USB_DEVICE(DLINK_VENDOR_ID, DLINK_PRODUCT_DWM_652) },
 	{ USB_DEVICE(ALINK_VENDOR_ID, DLINK_PRODUCT_DWM_652_U5) }, /* Yes, ALINK_VENDOR_ID */