Merge branch 'master' into for-next

Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.

21 files changed, 343 insertions, 216 deletions

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 9483acdf2e9e..e0e0787b724b 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -402,7 +402,7 @@ config FHCI_DEBUG
 	depends on USB_FHCI_HCD && DEBUG_FS
 	help
 	  Say "y" to see some FHCI debug information and statistics
-	  throught debugfs.
+	  through debugfs.
 
 config USB_U132_HCD
 	tristate "Elan U132 Adapter Host Controller"
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index fe99895fb098..42abd0f603bf 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -315,7 +315,6 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
 	int			stopped;
 	unsigned		count = 0;
 	u8			state;
-	const __le32		halt = HALT_BIT(ehci);
 	struct ehci_qh_hw	*hw = qh->hw;
 
 	if (unlikely (list_empty (&qh->qtd_list)))
@@ -422,7 +421,6 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
 					&& !(qtd->hw_alt_next
 						& EHCI_LIST_END(ehci))) {
 				stopped = 1;
-				goto halt;
 			}
 
 		/* stop scanning when we reach qtds the hc is using */
@@ -456,16 +454,6 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
 				 */
 				ehci_clear_tt_buffer(ehci, qh, urb, token);
 			}
-
-			/* force halt for unlinked or blocked qh, so we'll
-			 * patch the qh later and so that completions can't
-			 * activate it while we "know" it's stopped.
-			 */
-			if ((halt & hw->hw_token) == 0) {
-halt:
-				hw->hw_token |= halt;
-				wmb ();
-			}
 		}
 
 		/* unless we already know the urb's status, collect qtd status
@@ -1259,24 +1247,27 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
 static void scan_async (struct ehci_hcd *ehci)
 {
+	bool			stopped;
 	struct ehci_qh		*qh;
 	enum ehci_timer_action	action = TIMER_IO_WATCHDOG;
 
 	ehci->stamp = ehci_readl(ehci, &ehci->regs->frame_index);
 	timer_action_done (ehci, TIMER_ASYNC_SHRINK);
 rescan:
+	stopped = !HC_IS_RUNNING(ehci_to_hcd(ehci)->state);
 	qh = ehci->async->qh_next.qh;
 	if (likely (qh != NULL)) {
 		do {
 			/* clean any finished work for this qh */
-			if (!list_empty (&qh->qtd_list)
-					&& qh->stamp != ehci->stamp) {
+			if (!list_empty(&qh->qtd_list) && (stopped ||
+					qh->stamp != ehci->stamp)) {
 				int temp;
 
 				/* unlinks could happen here; completion
 				 * reporting drops the lock.  rescan using
 				 * the latest schedule, but don't rescan
-				 * qhs we already finished (no looping).
+				 * qhs we already finished (no looping)
+				 * unless the controller is stopped.
 				 */
 				qh = qh_get (qh);
 				qh->stamp = ehci->stamp;
@@ -1297,9 +1288,9 @@ rescan:
 			 */
 			if (list_empty(&qh->qtd_list)
 					&& qh->qh_state == QH_STATE_LINKED) {
-				if (!ehci->reclaim
-					&& ((ehci->stamp - qh->stamp) & 0x1fff)
-						>= (EHCI_SHRINK_FRAMES * 8))
+				if (!ehci->reclaim && (stopped ||
+					((ehci->stamp - qh->stamp) & 0x1fff)
+						>= EHCI_SHRINK_FRAMES * 8))
 					start_unlink_async(ehci, qh);
 				else
 					action = TIMER_ASYNC_SHRINK;
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index f86d3fa20214..333ddc156919 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -644,7 +644,7 @@ static inline void ehci_writel(const struct ehci_hcd *ehci,
 /*
  * On certain ppc-44x SoC there is a HW issue, that could only worked around with
  * explicit suspend/operate of OHCI. This function hereby makes sense only on that arch.
- * Other common bits are dependant on has_amcc_usb23 quirk flag.
+ * Other common bits are dependent on has_amcc_usb23 quirk flag.
  */
 #ifdef CONFIG_44x
 static inline void set_ohci_hcfs(struct ehci_hcd *ehci, int operational)
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index b84ff7e51896..19223c7449e1 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -401,7 +401,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 		/* 1 td fro setup,1 for ack */
 		size = 2;
 	case PIPE_BULK:
-		/* one td for every 4096 bytes(can be upto 8k) */
+		/* one td for every 4096 bytes(can be up to 8k) */
 		size += urb->transfer_buffer_length / 4096;
 		/* ...add for any remaining bytes... */
 		if ((urb->transfer_buffer_length % 4096) != 0)
diff --git a/drivers/usb/host/fhci-tds.c b/drivers/usb/host/fhci-tds.c
index 38fe058fbe61..0ea577bfca2a 100644
--- a/drivers/usb/host/fhci-tds.c
+++ b/drivers/usb/host/fhci-tds.c
@@ -40,7 +40,7 @@
 #define TD_RXER		0x0020 /* Rx error or not */
 
 #define TD_NAK		0x0010 /* No ack. */
-#define TD_STAL		0x0008 /* Stall recieved */
+#define TD_STAL		0x0008 /* Stall received */
 #define TD_TO		0x0004 /* time out */
 #define TD_UN		0x0002 /* underrun */
 #define TD_NO		0x0010 /* Rx Non Octet Aligned Packet */
@@ -274,7 +274,7 @@ void fhci_init_ep_registers(struct fhci_usb *usb, struct endpoint *ep,
  * It is also preparing the TDs for new frames. If the Tx interrupts
  * are disabled, the application should call that routine to get
  * confirmation about the submitted frames. Otherwise, the routine is
- * called frome the interrupt service routine during the Tx interrupt.
+ * called from the interrupt service routine during the Tx interrupt.
  * In that case the application is informed by calling the application
  * specific 'fhci_transaction_confirm' routine
  */
@@ -337,7 +337,7 @@ static void fhci_td_transaction_confirm(struct fhci_usb *usb)
 					pkt->status = USB_TD_RX_ER_NONOCT;
 				else
 					fhci_err(usb->fhci, "illegal error "
-						 "occured\n");
+						 "occurred\n");
 			} else if (td_status & TD_NAK)
 				pkt->status = USB_TD_TX_ER_NAK;
 			else if (td_status & TD_TO)
@@ -347,7 +347,7 @@ static void fhci_td_transaction_confirm(struct fhci_usb *usb)
 			else if (td_status & TD_STAL)
 				pkt->status = USB_TD_TX_ER_STALL;
 			else
-				fhci_err(usb->fhci, "illegal error occured\n");
+				fhci_err(usb->fhci, "illegal error occurred\n");
 		} else if ((extra_data & TD_TOK_IN) &&
 				pkt->len > td_length - CRC_SIZE) {
 			pkt->status = USB_TD_RX_DATA_UNDERUN;
diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h
index 71c3caaea4c1..dc6939a44a1a 100644
--- a/drivers/usb/host/fhci.h
+++ b/drivers/usb/host/fhci.h
@@ -82,7 +82,7 @@
 #define USB_TD_RX_ER_NONOCT	0x40000000 /* Tx Non Octet Aligned Packet */
 #define USB_TD_RX_ER_BITSTUFF	0x20000000 /* Frame Aborted-Received pkt */
 #define USB_TD_RX_ER_CRC	0x10000000 /* CRC error */
-#define USB_TD_RX_ER_OVERUN	0x08000000 /* Over - run occured */
+#define USB_TD_RX_ER_OVERUN	0x08000000 /* Over - run occurred */
 #define USB_TD_RX_ER_PID	0x04000000 /* wrong PID received */
 #define USB_TD_RX_DATA_UNDERUN	0x02000000 /* shorter than expected */
 #define USB_TD_RX_DATA_OVERUN	0x01000000 /* longer than expected */
@@ -363,7 +363,7 @@ struct ed {
 struct td {
 	void *data;		 /* a pointer to the data buffer */
 	unsigned int len;	 /* length of the data to be submitted */
-	unsigned int actual_len; /* actual bytes transfered on this td */
+	unsigned int actual_len; /* actual bytes transferred on this td */
 	enum fhci_ta_type type;	 /* transaction type */
 	u8 toggle;		 /* toggle for next trans. within this TD */
 	u16 iso_index;		 /* ISO transaction index */
diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c
index 2562e92e3178..af05718bdc73 100644
--- a/drivers/usb/host/imx21-hcd.c
+++ b/drivers/usb/host/imx21-hcd.c
@@ -1323,7 +1323,7 @@ static void process_etds(struct usb_hcd *hcd, struct imx21 *imx21, int sof)
  * (and hence no interrupt occurs).
  * This causes the transfer in question to hang.
  * The kludge below checks for this condition at each SOF and processes any
- * blocked ETDs (after an arbitary 10 frame wait)
+ * blocked ETDs (after an arbitrary 10 frame wait)
  *
  * With a single active transfer the usbtest test suite will run for days
  * without the kludge.
diff --git a/drivers/usb/host/isp116x.h b/drivers/usb/host/isp116x.h
index 12db961acdfb..9a2c400e6090 100644
--- a/drivers/usb/host/isp116x.h
+++ b/drivers/usb/host/isp116x.h
@@ -13,7 +13,7 @@
 
 /* Full speed: max # of bytes to transfer for a single urb
    at a time must be < 1024 && must be multiple of 64.
-   832 allows transfering 4kiB within 5 frames. */
+   832 allows transferring 4kiB within 5 frames. */
 #define MAX_TRANSFER_SIZE_FULLSPEED	832
 
 /* Low speed: there is no reason to schedule in very big
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index 662cd002adfc..f97570a847ca 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -546,7 +546,7 @@ static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep)
 			if (usb_pipecontrol(urb->pipe)) {
 				ep->nextpid = USB_PID_ACK;
 				/* save the data underrun error code for later and
-				 * procede with the status stage
+				 * proceed with the status stage
 				 */
 				urb->actual_length += PTD_GET_COUNT(ptd);
 				BUG_ON(urb->actual_length > urb->transfer_buffer_length);
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index f50e84ac570a..795345ad45e6 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -295,7 +295,7 @@ static void alloc_mem(struct usb_hcd *hcd, struct isp1760_qtd *qtd)
 	}
 
 	dev_err(hcd->self.controller,
-				"%s: Can not allocate %lu bytes of memory\n"
+				"%s: Cannot allocate %zu bytes of memory\n"
 				"Current memory map:\n",
 				__func__, qtd->length);
 	for (i = 0; i < BLOCKS; i++) {
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 17a6043c1fa0..958d985f2951 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -33,7 +33,7 @@
 
 #ifdef __LITTLE_ENDIAN
 #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C)
-#elif __BIG_ENDIAN
+#elif defined(__BIG_ENDIAN)
 #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | \
 			  USBH_ENABLE_BE)
 #else
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index e7288639edb0..d55723514860 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -162,7 +162,7 @@ static int ohci_urb_enqueue (
 		// case PIPE_INTERRUPT:
 		// case PIPE_BULK:
 		default:
-			/* one TD for every 4096 Bytes (can be upto 8K) */
+			/* one TD for every 4096 Bytes (can be up to 8K) */
 			size += urb->transfer_buffer_length / 4096;
 			/* ... and for any remaining bytes ... */
 			if ((urb->transfer_buffer_length % 4096) != 0)
diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index 8dabe8e31d8c..3558491dd87d 100644
--- a/drivers/usb/host/ohci-tmio.c
+++ b/drivers/usb/host/ohci-tmio.c
@@ -185,7 +185,7 @@ static struct platform_driver ohci_hcd_tmio_driver;
 
 static int __devinit ohci_hcd_tmio_drv_probe(struct platform_device *dev)
 {
-	struct mfd_cell *cell = dev->dev.platform_data;
+	const struct mfd_cell *cell = mfd_get_cell(dev);
 	struct resource *regs = platform_get_resource(dev, IORESOURCE_MEM, 0);
 	struct resource *config = platform_get_resource(dev, IORESOURCE_MEM, 1);
 	struct resource *sram = platform_get_resource(dev, IORESOURCE_MEM, 2);
@@ -274,7 +274,7 @@ static int __devexit ohci_hcd_tmio_drv_remove(struct platform_device *dev)
 {
 	struct usb_hcd *hcd = platform_get_drvdata(dev);
 	struct tmio_hcd *tmio = hcd_to_tmio(hcd);
-	struct mfd_cell *cell = dev->dev.platform_data;
+	const struct mfd_cell *cell = mfd_get_cell(dev);
 
 	usb_remove_hcd(hcd);
 	tmio_stop_hc(dev);
@@ -293,7 +293,7 @@ static int __devexit ohci_hcd_tmio_drv_remove(struct platform_device *dev)
 #ifdef CONFIG_PM
 static int ohci_hcd_tmio_drv_suspend(struct platform_device *dev, pm_message_t state)
 {
-	struct mfd_cell *cell = dev->dev.platform_data;
+	const struct mfd_cell *cell = mfd_get_cell(dev);
 	struct usb_hcd *hcd = platform_get_drvdata(dev);
 	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
 	struct tmio_hcd *tmio = hcd_to_tmio(hcd);
@@ -326,7 +326,7 @@ static int ohci_hcd_tmio_drv_suspend(struct platform_device *dev, pm_message_t s
 
 static int ohci_hcd_tmio_drv_resume(struct platform_device *dev)
 {
-	struct mfd_cell *cell = dev->dev.platform_data;
+	const struct mfd_cell *cell = mfd_get_cell(dev);
 	struct usb_hcd *hcd = platform_get_drvdata(dev);
 	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
 	struct tmio_hcd *tmio = hcd_to_tmio(hcd);
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index 38193f4e980e..4a771f6cc822 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -2879,7 +2879,7 @@ static int oxu_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 	/* Ok, we have more job to do! :) */
 
 	for (i = 0; i < num - 1; i++) {
-		/* Get free micro URB poll till a free urb is recieved */
+		/* Get free micro URB poll till a free urb is received */
 
 		do {
 			murb = (struct urb *) oxu_murb_alloc(oxu);
@@ -2911,7 +2911,7 @@ static int oxu_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 
 	/* Last urb requires special handling  */
 
-	/* Get free micro URB poll till a free urb is recieved */
+	/* Get free micro URB poll till a free urb is received */
 	do {
 		murb = (struct urb *) oxu_murb_alloc(oxu);
 		if (!murb)
@@ -3832,7 +3832,7 @@ static int oxu_drv_probe(struct platform_device *pdev)
 		return -EBUSY;
 	}
 
-	ret = set_irq_type(irq, IRQF_TRIGGER_FALLING);
+	ret = irq_set_irq_type(irq, IRQF_TRIGGER_FALLING);
 	if (ret) {
 		dev_err(&pdev->dev, "error setting irq type\n");
 		ret = -EFAULT;
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 1d586d4f7b56..9b166d70ae91 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -84,65 +84,92 @@ int usb_amd_find_chipset_info(void)
 {
 	u8 rev = 0;
 	unsigned long flags;
+	struct amd_chipset_info info;
+	int ret;
 
 	spin_lock_irqsave(&amd_lock, flags);
 
-	amd_chipset.probe_count++;
 	/* probe only once */
-	if (amd_chipset.probe_count > 1) {
+	if (amd_chipset.probe_count > 0) {
+		amd_chipset.probe_count++;
 		spin_unlock_irqrestore(&amd_lock, flags);
 		return amd_chipset.probe_result;
 	}
+	memset(&info, 0, sizeof(info));
+	spin_unlock_irqrestore(&amd_lock, flags);
 
-	amd_chipset.smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL);
-	if (amd_chipset.smbus_dev) {
-		rev = amd_chipset.smbus_dev->revision;
+	info.smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL);
+	if (info.smbus_dev) {
+		rev = info.smbus_dev->revision;
 		if (rev >= 0x40)
-			amd_chipset.sb_type = 1;
+			info.sb_type = 1;
 		else if (rev >= 0x30 && rev <= 0x3b)
-			amd_chipset.sb_type = 3;
+			info.sb_type = 3;
 	} else {
-		amd_chipset.smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-							0x780b, NULL);
-		if (!amd_chipset.smbus_dev) {
-			spin_unlock_irqrestore(&amd_lock, flags);
-			return 0;
+		info.smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+						0x780b, NULL);
+		if (!info.smbus_dev) {
+			ret = 0;
+			goto commit;
 		}
-		rev = amd_chipset.smbus_dev->revision;
+
+		rev = info.smbus_dev->revision;
 		if (rev >= 0x11 && rev <= 0x18)
-			amd_chipset.sb_type = 2;
+			info.sb_type = 2;
 	}
 
-	if (amd_chipset.sb_type == 0) {
-		if (amd_chipset.smbus_dev) {
-			pci_dev_put(amd_chipset.smbus_dev);
-			amd_chipset.smbus_dev = NULL;
+	if (info.sb_type == 0) {
+		if (info.smbus_dev) {
+			pci_dev_put(info.smbus_dev);
+			info.smbus_dev = NULL;
 		}
-		spin_unlock_irqrestore(&amd_lock, flags);
-		return 0;
+		ret = 0;
+		goto commit;
 	}
 
-	amd_chipset.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x9601, NULL);
-	if (amd_chipset.nb_dev) {
-		amd_chipset.nb_type = 1;
+	info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x9601, NULL);
+	if (info.nb_dev) {
+		info.nb_type = 1;
 	} else {
-		amd_chipset.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-							0x1510, NULL);
-		if (amd_chipset.nb_dev) {
-			amd_chipset.nb_type = 2;
-		} else  {
-			amd_chipset.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-								0x9600, NULL);
-			if (amd_chipset.nb_dev)
-				amd_chipset.nb_type = 3;
+		info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1510, NULL);
+		if (info.nb_dev) {
+			info.nb_type = 2;
+		} else {
+			info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+						     0x9600, NULL);
+			if (info.nb_dev)
+				info.nb_type = 3;
 		}
 	}
 
-	amd_chipset.probe_result = 1;
+	ret = info.probe_result = 1;
 	printk(KERN_DEBUG "QUIRK: Enable AMD PLL fix\n");
 
-	spin_unlock_irqrestore(&amd_lock, flags);
-	return amd_chipset.probe_result;
+commit:
+
+	spin_lock_irqsave(&amd_lock, flags);
+	if (amd_chipset.probe_count > 0) {
+		/* race - someone else was faster - drop devices */
+
+		/* Mark that we where here */
+		amd_chipset.probe_count++;
+		ret = amd_chipset.probe_result;
+
+		spin_unlock_irqrestore(&amd_lock, flags);
+
+		if (info.nb_dev)
+			pci_dev_put(info.nb_dev);
+		if (info.smbus_dev)
+			pci_dev_put(info.smbus_dev);
+
+	} else {
+		/* no race - commit the result */
+		info.probe_count++;
+		amd_chipset = info;
+		spin_unlock_irqrestore(&amd_lock, flags);
+	}
+
+	return ret;
 }
 EXPORT_SYMBOL_GPL(usb_amd_find_chipset_info);
 
@@ -284,6 +311,7 @@ EXPORT_SYMBOL_GPL(usb_amd_quirk_pll_enable);
 
 void usb_amd_dev_put(void)
 {
+	struct pci_dev *nb, *smbus;
 	unsigned long flags;
 
 	spin_lock_irqsave(&amd_lock, flags);
@@ -294,20 +322,23 @@ void usb_amd_dev_put(void)
 		return;
 	}
 
-	if (amd_chipset.nb_dev) {
-		pci_dev_put(amd_chipset.nb_dev);
-		amd_chipset.nb_dev = NULL;
-	}
-	if (amd_chipset.smbus_dev) {
-		pci_dev_put(amd_chipset.smbus_dev);
-		amd_chipset.smbus_dev = NULL;
-	}
+	/* save them to pci_dev_put outside of spinlock */
+	nb    = amd_chipset.nb_dev;
+	smbus = amd_chipset.smbus_dev;
+
+	amd_chipset.nb_dev = NULL;
+	amd_chipset.smbus_dev = NULL;
 	amd_chipset.nb_type = 0;
 	amd_chipset.sb_type = 0;
 	amd_chipset.isoc_reqs = 0;
 	amd_chipset.probe_result = 0;
 
 	spin_unlock_irqrestore(&amd_lock, flags);
+
+	if (nb)
+		pci_dev_put(nb);
+	if (smbus)
+		pci_dev_put(smbus);
 }
 EXPORT_SYMBOL_GPL(usb_amd_dev_put);
 
diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
index dc0ab8382f5d..d6e175428618 100644
--- a/drivers/usb/host/whci/qset.c
+++ b/drivers/usb/host/whci/qset.c
@@ -739,7 +739,7 @@ static int get_urb_status_from_qtd(struct urb *urb, u32 status)
  * process_inactive_qtd - process an inactive (but not halted) qTD.
  *
  * Update the urb with the transfer bytes from the qTD, if the urb is
- * completely transfered or (in the case of an IN only) the LPF is
+ * completely transferred or (in the case of an IN only) the LPF is
  * set, then the transfer is complete and the urb should be returned
  * to the system.
  */
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index a003e79aacdc..627f3438028c 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -846,7 +846,7 @@ static u32 xhci_find_real_port_number(struct xhci_hcd *xhci,
 		 * Skip ports that don't have known speeds, or have duplicate
 		 * Extended Capabilities port speed entries.
 		 */
-		if (port_speed == 0 || port_speed == -1)
+		if (port_speed == 0 || port_speed == DUPLICATE_ENTRY)
 			continue;
 
 		/*
@@ -974,6 +974,47 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	return 0;
 }
 
+/*
+ * Convert interval expressed as 2^(bInterval - 1) == interval into
+ * straight exponent value 2^n == interval.
+ *
+ */
+static unsigned int xhci_parse_exponent_interval(struct usb_device *udev,
+		struct usb_host_endpoint *ep)
+{
+	unsigned int interval;
+
+	interval = clamp_val(ep->desc.bInterval, 1, 16) - 1;
+	if (interval != ep->desc.bInterval - 1)
+		dev_warn(&udev->dev,
+			 "ep %#x - rounding interval to %d microframes\n",
+			 ep->desc.bEndpointAddress,
+			 1 << interval);
+
+	return interval;
+}
+
+/*
+ * Convert bInterval expressed in frames (in 1-255 range) to exponent of
+ * microframes, rounded down to nearest power of 2.
+ */
+static unsigned int xhci_parse_frame_interval(struct usb_device *udev,
+		struct usb_host_endpoint *ep)
+{
+	unsigned int interval;
+
+	interval = fls(8 * ep->desc.bInterval) - 1;
+	interval = clamp_val(interval, 3, 10);
+	if ((1 << interval) != 8 * ep->desc.bInterval)
+		dev_warn(&udev->dev,
+			 "ep %#x - rounding interval to %d microframes, ep desc says %d microframes\n",
+			 ep->desc.bEndpointAddress,
+			 1 << interval,
+			 8 * ep->desc.bInterval);
+
+	return interval;
+}
+
 /* Return the polling or NAK interval.
  *
  * The polling interval is expressed in "microframes".  If xHCI's Interval field
@@ -982,7 +1023,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
  * The NAK interval is one NAK per 1 to 255 microframes, or no NAKs if interval
  * is set to 0.
  */
-static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
+static unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
 	unsigned int interval = 0;
@@ -991,45 +1032,38 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
 	case USB_SPEED_HIGH:
 		/* Max NAK rate */
 		if (usb_endpoint_xfer_control(&ep->desc) ||
-				usb_endpoint_xfer_bulk(&ep->desc))
+		    usb_endpoint_xfer_bulk(&ep->desc)) {
 			interval = ep->desc.bInterval;
+			break;
+		}
 		/* Fall through - SS and HS isoc/int have same decoding */
+
 	case USB_SPEED_SUPER:
 		if (usb_endpoint_xfer_int(&ep->desc) ||
-				usb_endpoint_xfer_isoc(&ep->desc)) {
-			if (ep->desc.bInterval == 0)
-				interval = 0;
-			else
-				interval = ep->desc.bInterval - 1;
-			if (interval > 15)
-				interval = 15;
-			if (interval != ep->desc.bInterval + 1)
-				dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n",
-						ep->desc.bEndpointAddress, 1 << interval);
+		    usb_endpoint_xfer_isoc(&ep->desc)) {
+			interval = xhci_parse_exponent_interval(udev, ep);
 		}
 		break;
-	/* Convert bInterval (in 1-255 frames) to microframes and round down to
-	 * nearest power of 2.
-	 */
+
 	case USB_SPEED_FULL:
+		if (usb_endpoint_xfer_int(&ep->desc)) {
+			interval = xhci_parse_exponent_interval(udev, ep);
+			break;
+		}
+		/*
+		 * Fall through for isochronous endpoint interval decoding
+		 * since it uses the same rules as low speed interrupt
+		 * endpoints.
+		 */
+
 	case USB_SPEED_LOW:
 		if (usb_endpoint_xfer_int(&ep->desc) ||
-				usb_endpoint_xfer_isoc(&ep->desc)) {
-			interval = fls(8*ep->desc.bInterval) - 1;
-			if (interval > 10)
-				interval = 10;
-			if (interval < 3)
-				interval = 3;
-			if ((1 << interval) != 8*ep->desc.bInterval)
-				dev_warn(&udev->dev,
-						"ep %#x - rounding interval"
-						" to %d microframes, "
-						"ep desc says %d microframes\n",
-						ep->desc.bEndpointAddress,
-						1 << interval,
-						8*ep->desc.bInterval);
+		    usb_endpoint_xfer_isoc(&ep->desc)) {
+
+			interval = xhci_parse_frame_interval(udev, ep);
 		}
 		break;
+
 	default:
 		BUG();
 	}
@@ -1041,7 +1075,7 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
  * transaction opportunities per microframe", but that goes in the Max Burst
  * endpoint context field.
  */
-static inline u32 xhci_get_endpoint_mult(struct usb_device *udev,
+static u32 xhci_get_endpoint_mult(struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
 	if (udev->speed != USB_SPEED_SUPER ||
@@ -1050,7 +1084,7 @@ static inline u32 xhci_get_endpoint_mult(struct usb_device *udev,
 	return ep->ss_ep_comp.bmAttributes;
 }
 
-static inline u32 xhci_get_endpoint_type(struct usb_device *udev,
+static u32 xhci_get_endpoint_type(struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
 	int in;
@@ -1084,7 +1118,7 @@ static inline u32 xhci_get_endpoint_type(struct usb_device *udev,
  * Basically, this is the maxpacket size, multiplied by the burst size
  * and mult size.
  */
-static inline u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci,
+static u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci,
 		struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
@@ -1727,12 +1761,12 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
 			 * found a similar duplicate.
 			 */
 			if (xhci->port_array[i] != major_revision &&
-				xhci->port_array[i] != (u8) -1) {
+				xhci->port_array[i] != DUPLICATE_ENTRY) {
 				if (xhci->port_array[i] == 0x03)
 					xhci->num_usb3_ports--;
 				else
 					xhci->num_usb2_ports--;
-				xhci->port_array[i] = (u8) -1;
+				xhci->port_array[i] = DUPLICATE_ENTRY;
 			}
 			/* FIXME: Should we disable the port? */
 			continue;
@@ -1831,7 +1865,7 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
 		for (i = 0; i < num_ports; i++) {
 			if (xhci->port_array[i] == 0x03 ||
 					xhci->port_array[i] == 0 ||
-					xhci->port_array[i] == -1)
+					xhci->port_array[i] == DUPLICATE_ENTRY)
 				continue;
 
 			xhci->usb2_ports[port_index] =
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index ceea9f33491c..a10494c2f3c7 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -114,6 +114,10 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
 	if (pdev->vendor == PCI_VENDOR_ID_NEC)
 		xhci->quirks |= XHCI_NEC_HOST;
 
+	/* AMD PLL quirk */
+	if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
+		xhci->quirks |= XHCI_AMD_PLL_FIX;
+
 	/* Make sure the HC is halted. */
 	retval = xhci_halt(xhci);
 	if (retval)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index cfc1ad92473f..7437386a9a50 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -93,7 +93,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg,
 /* Does this link TRB point to the first segment in a ring,
  * or was the previous TRB the last TRB on the last segment in the ERST?
  */
-static inline bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring *ring,
+static bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring *ring,
 		struct xhci_segment *seg, union xhci_trb *trb)
 {
 	if (ring == xhci->event_ring)
@@ -107,7 +107,7 @@ static inline bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring
  * segment?  I.e. would the updated event TRB pointer step off the end of the
  * event seg?
  */
-static inline int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
+static int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
 		struct xhci_segment *seg, union xhci_trb *trb)
 {
 	if (ring == xhci->event_ring)
@@ -116,7 +116,7 @@ static inline int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
 		return (trb->link.control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK);
 }
 
-static inline int enqueue_is_link_trb(struct xhci_ring *ring)
+static int enqueue_is_link_trb(struct xhci_ring *ring)
 {
 	struct xhci_link_trb *link = &ring->enqueue->link;
 	return ((link->control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK));
@@ -592,7 +592,7 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
 	ep->ep_state |= SET_DEQ_PENDING;
 }
 
-static inline void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
+static void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
 		struct xhci_virt_ep *ep)
 {
 	ep->ep_state &= ~EP_HALT_PENDING;
@@ -619,6 +619,13 @@ static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci,
 
 	/* Only giveback urb when this is the last td in urb */
 	if (urb_priv->td_cnt == urb_priv->length) {
+		if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+			xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--;
+			if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs	== 0) {
+				if (xhci->quirks & XHCI_AMD_PLL_FIX)
+					usb_amd_quirk_pll_enable();
+			}
+		}
 		usb_hcd_unlink_urb_from_ep(hcd, urb);
 		xhci_dbg(xhci, "Giveback %s URB %p\n", adjective, urb);
 
@@ -1209,7 +1216,7 @@ static unsigned int find_faked_portnum_from_hw_portnum(struct usb_hcd *hcd,
 		 * Skip ports that don't have known speeds, or have duplicate
 		 * Extended Capabilities port speed entries.
 		 */
-		if (port_speed == 0 || port_speed == -1)
+		if (port_speed == 0 || port_speed == DUPLICATE_ENTRY)
 			continue;
 
 		/*
@@ -1235,6 +1242,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	u8 major_revision;
 	struct xhci_bus_state *bus_state;
 	u32 __iomem **port_array;
+	bool bogus_port_status = false;
 
 	/* Port status change events always have a successful completion code */
 	if (GET_COMP_CODE(event->generic.field[2]) != COMP_SUCCESS) {
@@ -1247,6 +1255,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	max_ports = HCS_MAX_PORTS(xhci->hcs_params1);
 	if ((port_id <= 0) || (port_id > max_ports)) {
 		xhci_warn(xhci, "Invalid port id %d\n", port_id);
+		bogus_port_status = true;
 		goto cleanup;
 	}
 
@@ -1258,12 +1267,14 @@ static void handle_port_status(struct xhci_hcd *xhci,
 		xhci_warn(xhci, "Event for port %u not in "
 				"Extended Capabilities, ignoring.\n",
 				port_id);
+		bogus_port_status = true;
 		goto cleanup;
 	}
-	if (major_revision == (u8) -1) {
+	if (major_revision == DUPLICATE_ENTRY) {
 		xhci_warn(xhci, "Event for port %u duplicated in"
 				"Extended Capabilities, ignoring.\n",
 				port_id);
+		bogus_port_status = true;
 		goto cleanup;
 	}
 
@@ -1335,6 +1346,13 @@ cleanup:
 	/* Update event ring dequeue pointer before dropping the lock */
 	inc_deq(xhci, xhci->event_ring, true);
 
+	/* Don't make the USB core poll the roothub if we got a bad port status
+	 * change event.  Besides, at that point we can't tell which roothub
+	 * (USB 2.0 or USB 3.0) to kick.
+	 */
+	if (bogus_port_status)
+		return;
+
 	spin_unlock(&xhci->lock);
 	/* Pass this up to the core */
 	usb_hcd_poll_rh_status(hcd);
@@ -1554,8 +1572,17 @@ td_cleanup:
 
 		urb_priv->td_cnt++;
 		/* Giveback the urb when all the tds are completed */
-		if (urb_priv->td_cnt == urb_priv->length)
+		if (urb_priv->td_cnt == urb_priv->length) {
 			ret = 1;
+			if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+				xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--;
+				if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs
+					== 0) {
+					if (xhci->quirks & XHCI_AMD_PLL_FIX)
+						usb_amd_quirk_pll_enable();
+				}
+			}
+		}
 	}
 
 	return ret;
@@ -1675,71 +1702,52 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
 	struct urb_priv *urb_priv;
 	int idx;
 	int len = 0;
-	int skip_td = 0;
 	union xhci_trb *cur_trb;
 	struct xhci_segment *cur_seg;
+	struct usb_iso_packet_descriptor *frame;
 	u32 trb_comp_code;
+	bool skip_td = false;
 
 	ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer);
 	trb_comp_code = GET_COMP_CODE(event->transfer_len);
 	urb_priv = td->urb->hcpriv;
 	idx = urb_priv->td_cnt;
+	frame = &td->urb->iso_frame_desc[idx];
 
-	if (ep->skip) {
-		/* The transfer is partly done */
-		*status = -EXDEV;
-		td->urb->iso_frame_desc[idx].status = -EXDEV;
-	} else {
-		/* handle completion code */
-		switch (trb_comp_code) {
-		case COMP_SUCCESS:
-			td->urb->iso_frame_desc[idx].status = 0;
-			xhci_dbg(xhci, "Successful isoc transfer!\n");
-			break;
-		case COMP_SHORT_TX:
-			if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
-				td->urb->iso_frame_desc[idx].status =
-					 -EREMOTEIO;
-			else
-				td->urb->iso_frame_desc[idx].status = 0;
-			break;
-		case COMP_BW_OVER:
-			td->urb->iso_frame_desc[idx].status = -ECOMM;
-			skip_td = 1;
-			break;
-		case COMP_BUFF_OVER:
-		case COMP_BABBLE:
-			td->urb->iso_frame_desc[idx].status = -EOVERFLOW;
-			skip_td = 1;
-			break;
-		case COMP_STALL:
-			td->urb->iso_frame_desc[idx].status = -EPROTO;
-			skip_td = 1;
-			break;
-		case COMP_STOP:
-		case COMP_STOP_INVAL:
-			break;
-		default:
-			td->urb->iso_frame_desc[idx].status = -1;
-			break;
-		}
-	}
-
-	/* calc actual length */
-	if (ep->skip) {
-		td->urb->iso_frame_desc[idx].actual_length = 0;
-		/* Update ring dequeue pointer */
-		while (ep_ring->dequeue != td->last_trb)
-			inc_deq(xhci, ep_ring, false);
-		inc_deq(xhci, ep_ring, false);
-		return finish_td(xhci, td, event_trb, event, ep, status, true);
+	/* handle completion code */
+	switch (trb_comp_code) {
+	case COMP_SUCCESS:
+		frame->status = 0;
+		xhci_dbg(xhci, "Successful isoc transfer!\n");
+		break;
+	case COMP_SHORT_TX:
+		frame->status = td->urb->transfer_flags & URB_SHORT_NOT_OK ?
+				-EREMOTEIO : 0;
+		break;
+	case COMP_BW_OVER:
+		frame->status = -ECOMM;
+		skip_td = true;
+		break;
+	case COMP_BUFF_OVER:
+	case COMP_BABBLE:
+		frame->status = -EOVERFLOW;
+		skip_td = true;
+		break;
+	case COMP_STALL:
+		frame->status = -EPROTO;
+		skip_td = true;
+		break;
+	case COMP_STOP:
+	case COMP_STOP_INVAL:
+		break;
+	default:
+		frame->status = -1;
+		break;
 	}
 
-	if (trb_comp_code == COMP_SUCCESS || skip_td == 1) {
-		td->urb->iso_frame_desc[idx].actual_length =
-			td->urb->iso_frame_desc[idx].length;
-		td->urb->actual_length +=
-			td->urb->iso_frame_desc[idx].length;
+	if (trb_comp_code == COMP_SUCCESS || skip_td) {
+		frame->actual_length = frame->length;
+		td->urb->actual_length += frame->length;
 	} else {
 		for (cur_trb = ep_ring->dequeue,
 		     cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
@@ -1755,7 +1763,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
 			TRB_LEN(event->transfer_len);
 
 		if (trb_comp_code != COMP_STOP_INVAL) {
-			td->urb->iso_frame_desc[idx].actual_length = len;
+			frame->actual_length = len;
 			td->urb->actual_length += len;
 		}
 	}
@@ -1766,6 +1774,35 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
 	return finish_td(xhci, td, event_trb, event, ep, status, false);
 }
 
+static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
+			struct xhci_transfer_event *event,
+			struct xhci_virt_ep *ep, int *status)
+{
+	struct xhci_ring *ep_ring;
+	struct urb_priv *urb_priv;
+	struct usb_iso_packet_descriptor *frame;
+	int idx;
+
+	ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer);
+	urb_priv = td->urb->hcpriv;
+	idx = urb_priv->td_cnt;
+	frame = &td->urb->iso_frame_desc[idx];
+
+	/* The transfer is partly done */
+	*status = -EXDEV;
+	frame->status = -EXDEV;
+
+	/* calc actual length */
+	frame->actual_length = 0;
+
+	/* Update ring dequeue pointer */
+	while (ep_ring->dequeue != td->last_trb)
+		inc_deq(xhci, ep_ring, false);
+	inc_deq(xhci, ep_ring, false);
+
+	return finish_td(xhci, td, NULL, event, ep, status, true);
+}
+
 /*
  * Process bulk and interrupt tds, update urb status and actual_length.
  */
@@ -2024,36 +2061,42 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		}
 
 		td = list_entry(ep_ring->td_list.next, struct xhci_td, td_list);
+
 		/* Is this a TRB in the currently executing TD? */
 		event_seg = trb_in_td(ep_ring->deq_seg, ep_ring->dequeue,
 				td->last_trb, event_dma);
-		if (event_seg && ep->skip) {
+		if (!event_seg) {
+			if (!ep->skip ||
+			    !usb_endpoint_xfer_isoc(&td->urb->ep->desc)) {
+				/* HC is busted, give up! */
+				xhci_err(xhci,
+					"ERROR Transfer event TRB DMA ptr not "
+					"part of current TD\n");
+				return -ESHUTDOWN;
+			}
+
+			ret = skip_isoc_td(xhci, td, event, ep, &status);
+			goto cleanup;
+		}
+
+		if (ep->skip) {
 			xhci_dbg(xhci, "Found td. Clear skip flag.\n");
 			ep->skip = false;
 		}
-		if (!event_seg &&
-		   (!ep->skip || !usb_endpoint_xfer_isoc(&td->urb->ep->desc))) {
-			/* HC is busted, give up! */
-			xhci_err(xhci, "ERROR Transfer event TRB DMA ptr not "
-					"part of current TD\n");
-			return -ESHUTDOWN;
-		}
 
-		if (event_seg) {
-			event_trb = &event_seg->trbs[(event_dma -
-					 event_seg->dma) / sizeof(*event_trb)];
-			/*
-			 * No-op TRB should not trigger interrupts.
-			 * If event_trb is a no-op TRB, it means the
-			 * corresponding TD has been cancelled. Just ignore
-			 * the TD.
-			 */
-			if ((event_trb->generic.field[3] & TRB_TYPE_BITMASK)
-					 == TRB_TYPE(TRB_TR_NOOP)) {
-				xhci_dbg(xhci, "event_trb is a no-op TRB. "
-						"Skip it\n");
-				goto cleanup;
-			}
+		event_trb = &event_seg->trbs[(event_dma - event_seg->dma) /
+						sizeof(*event_trb)];
+		/*
+		 * No-op TRB should not trigger interrupts.
+		 * If event_trb is a no-op TRB, it means the
+		 * corresponding TD has been cancelled. Just ignore
+		 * the TD.
+		 */
+		if ((event_trb->generic.field[3] & TRB_TYPE_BITMASK)
+				 == TRB_TYPE(TRB_TR_NOOP)) {
+			xhci_dbg(xhci,
+				 "event_trb is a no-op TRB. Skip it\n");
+			goto cleanup;
 		}
 
 		/* Now update the urb's actual_length and give back to
@@ -3126,6 +3169,12 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		}
 	}
 
+	if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
+		if (xhci->quirks & XHCI_AMD_PLL_FIX)
+			usb_amd_quirk_pll_disable();
+	}
+	xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs++;
+
 	giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
 			start_cycle, start_trb);
 	return 0;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 9a3645fd759b..81b976e45880 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -550,6 +550,9 @@ void xhci_stop(struct usb_hcd *hcd)
 	del_timer_sync(&xhci->event_ring_timer);
 #endif
 
+	if (xhci->quirks & XHCI_AMD_PLL_FIX)
+		usb_amd_dev_put();
+
 	xhci_dbg(xhci, "// Disabling event ring interrupts\n");
 	temp = xhci_readl(xhci, &xhci->op_regs->status);
 	xhci_writel(xhci, temp & ~STS_EINT, &xhci->op_regs->status);
@@ -741,7 +744,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 	int			retval;
 
 	/* Wait a bit if either of the roothubs need to settle from the
-	 * transistion into bus suspend.
+	 * transition into bus suspend.
 	 */
 	if (time_before(jiffies, xhci->bus_state[0].next_statechange) ||
 			time_before(jiffies,
@@ -771,7 +774,9 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 
 	/* If restore operation fails, re-initialize the HC during resume */
 	if ((temp & STS_SRE) || hibernated) {
-		usb_root_hub_lost_power(hcd->self.root_hub);
+		/* Let the USB core know _both_ roothubs lost power. */
+		usb_root_hub_lost_power(xhci->main_hcd->self.root_hub);
+		usb_root_hub_lost_power(xhci->shared_hcd->self.root_hub);
 
 		xhci_dbg(xhci, "Stop HCD\n");
 		xhci_halt(xhci);
@@ -2072,7 +2077,7 @@ int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
 		return -EINVAL;
 	}
 	vdev = xhci->devs[udev->slot_id];
-	/* Mark each endpoint as being in transistion, so
+	/* Mark each endpoint as being in transition, so
 	 * xhci_urb_enqueue() will reject all URBs.
 	 */
 	for (i = 0; i < num_eps; i++) {
@@ -2386,10 +2391,18 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
 	/* Everything but endpoint 0 is disabled, so free or cache the rings. */
 	last_freed_endpoint = 1;
 	for (i = 1; i < 31; ++i) {
-		if (!virt_dev->eps[i].ring)
-			continue;
-		xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
-		last_freed_endpoint = i;
+		struct xhci_virt_ep *ep = &virt_dev->eps[i];
+
+		if (ep->ep_state & EP_HAS_STREAMS) {
+			xhci_free_stream_info(xhci, ep->stream_info);
+			ep->stream_info = NULL;
+			ep->ep_state &= ~EP_HAS_STREAMS;
+		}
+
+		if (ep->ring) {
+			xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
+			last_freed_endpoint = i;
+		}
 	}
 	xhci_dbg(xhci, "Output context after successful reset device cmd:\n");
 	xhci_dbg_ctx(xhci, virt_dev->out_ctx, last_freed_endpoint);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 711de253bc0f..ba1be6b7cc6d 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -30,6 +30,7 @@
 
 /* Code sharing between pci-quirks and xhci hcd */
 #include	"xhci-ext-caps.h"
+#include "pci-quirks.h"
 
 /* xHCI PCI Configuration Registers */
 #define XHCI_SBRN_OFFSET	(0x60)
@@ -232,7 +233,7 @@ struct xhci_op_regs {
  * notification type that matches a bit set in this bit field.
  */
 #define	DEV_NOTE_MASK		(0xffff)
-#define ENABLE_DEV_NOTE(x)	(1 << x)
+#define ENABLE_DEV_NOTE(x)	(1 << (x))
 /* Most of the device notification types should only be used for debug.
  * SW does need to pay attention to function wake notifications.
  */
@@ -348,6 +349,9 @@ struct xhci_op_regs {
 /* Initiate a warm port reset - complete when PORT_WRC is '1' */
 #define PORT_WR		(1 << 31)
 
+/* We mark duplicate entries with -1 */
+#define DUPLICATE_ENTRY ((u8)(-1))
+
 /* Port Power Management Status and Control - port_power_base bitmasks */
 /* Inactivity timer value for transitions into U1, in microseconds.
  * Timeout can be up to 127us.  0xFF means an infinite timeout.
@@ -601,11 +605,11 @@ struct xhci_ep_ctx {
 #define EP_STATE_STOPPED	3
 #define EP_STATE_ERROR		4
 /* Mult - Max number of burtst within an interval, in EP companion desc. */
-#define EP_MULT(p)		((p & 0x3) << 8)
+#define EP_MULT(p)		(((p) & 0x3) << 8)
 /* bits 10:14 are Max Primary Streams */
 /* bit 15 is Linear Stream Array */
 /* Interval - period between requests to an endpoint - 125u increments. */
-#define EP_INTERVAL(p)		((p & 0xff) << 16)
+#define EP_INTERVAL(p)		(((p) & 0xff) << 16)
 #define EP_INTERVAL_TO_UFRAMES(p)		(1 << (((p) >> 16) & 0xff))
 #define EP_MAXPSTREAMS_MASK	(0x1f << 10)
 #define EP_MAXPSTREAMS(p)	(((p) << 10) & EP_MAXPSTREAMS_MASK)
@@ -873,7 +877,7 @@ struct xhci_transfer_event {
 #define COMP_CMD_ABORT	25
 /* Stopped - transfer was terminated by a stop endpoint command */
 #define COMP_STOP	26
-/* Same as COMP_EP_STOPPED, but the transfered length in the event is invalid */
+/* Same as COMP_EP_STOPPED, but the transferred length in the event is invalid */
 #define COMP_STOP_INVAL	27
 /* Control Abort Error - Debug Capability - control pipe aborted */
 #define COMP_DBG_ABORT	28
@@ -1276,6 +1280,7 @@ struct xhci_hcd {
 #define	XHCI_LINK_TRB_QUIRK	(1 << 0)
 #define XHCI_RESET_EP_QUIRK	(1 << 1)
 #define XHCI_NEC_HOST		(1 << 2)
+#define XHCI_AMD_PLL_FIX	(1 << 3)
 	/* There are two roothubs to keep track of bus suspend info for */
 	struct xhci_bus_state   bus_state[2];
 	/* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */