Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (115 commits)
  EHCI: fix direction handling for interrupt data toggles
  USB: serial: add IDs for WinChipHead USB->RS232 adapter
  USB: OHCI: fix another regression for NVIDIA controllers
  usb: gadget: m66592-udc: add pullup function
  usb: gadget: m66592-udc: add function for external controller
  usb: gadget: r8a66597-udc: add pullup function
  usb: renesas_usbhs: support multi driver
  usb: renesas_usbhs: inaccessible pipe is not an error
  usb: renesas_usbhs: care buff alignment when dma handler
  USB: PL2303: correctly handle baudrates above 115200
  usb: r8a66597-hcd: fixup USB_PORT_STAT_C_SUSPEND shift
  usb: renesas_usbhs: compile/config are rescued
  usb: renesas_usbhs: fixup comment-out
  usb: update email address in ohci-sh and r8a66597-hcd
  usb: r8a66597-hcd: add function for external controller
  EHCI: only power off port if over-current is active
  USB: mon: Allow to use usbmon without debugfs
  USB: EHCI: go back to using the system clock for QH unlinks
  ehci: add pci quirk for Ordissimo and RM Slate 100 too
  ehci: refactor pci quirk to use standard dmi_check_system method
  ...

Fix up trivial conflicts in Documentation/feature-removal-schedule.txt

17 files changed, 481 insertions, 240 deletions

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index f8030ee928e..f72ae0b6ee7 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -94,7 +94,8 @@ static const char	hcd_name [] = "ehci_hcd";
 #define EHCI_IAA_MSECS		10		/* arbitrary */
 #define EHCI_IO_JIFFIES		(HZ/10)		/* io watchdog > irq_thresh */
 #define EHCI_ASYNC_JIFFIES	(HZ/20)		/* async idle timeout */
-#define EHCI_SHRINK_FRAMES	5		/* async qh unlink delay */
+#define EHCI_SHRINK_JIFFIES	(DIV_ROUND_UP(HZ, 200) + 1)
+						/* 200-ms async qh unlink delay */
 
 /* Initial IRQ latency:  faster than hw default */
 static int log2_irq_thresh = 0;		// 0 to 6
@@ -114,7 +115,7 @@ MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
 /* for link power management(LPM) feature */
 static unsigned int hird;
 module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n");
+MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
 
 #define	INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
 
@@ -152,10 +153,7 @@ timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action)
 			break;
 		/* case TIMER_ASYNC_SHRINK: */
 		default:
-			/* add a jiffie since we synch against the
-			 * 8 KHz uframe counter.
-			 */
-			t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1;
+			t = EHCI_SHRINK_JIFFIES;
 			break;
 		}
 		mod_timer(&ehci->watchdog, t + jiffies);
@@ -340,6 +338,7 @@ static void ehci_work(struct ehci_hcd *ehci);
 #include "ehci-mem.c"
 #include "ehci-q.c"
 #include "ehci-sched.c"
+#include "ehci-sysfs.c"
 
 /*-------------------------------------------------------------------------*/
 
@@ -524,7 +523,7 @@ static void ehci_stop (struct usb_hcd *hcd)
 	ehci_reset (ehci);
 	spin_unlock_irq(&ehci->lock);
 
-	remove_companion_file(ehci);
+	remove_sysfs_files(ehci);
 	remove_debug_files (ehci);
 
 	/* root hub is shut down separately (first, when possible) */
@@ -575,6 +574,12 @@ static int ehci_init(struct usb_hcd *hcd)
 	hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
 
 	/*
+	 * by default set standard 80% (== 100 usec/uframe) max periodic
+	 * bandwidth as required by USB 2.0
+	 */
+	ehci->uframe_periodic_max = 100;
+
+	/*
 	 * hw default: 1K periodic list heads, one per frame.
 	 * periodic_size can shrink by USBCMD update if hcc_params allows.
 	 */
@@ -758,7 +763,7 @@ static int ehci_run (struct usb_hcd *hcd)
 	 * since the class device isn't created that early.
 	 */
 	create_debug_files(ehci);
-	create_companion_file(ehci);
+	create_sysfs_files(ehci);
 
 	return 0;
 }
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index ea6184bf48d..bf2c8f65e1a 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -471,29 +471,6 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
 
 /*-------------------------------------------------------------------------*/
 
-/* Display the ports dedicated to the companion controller */
-static ssize_t show_companion(struct device *dev,
-			      struct device_attribute *attr,
-			      char *buf)
-{
-	struct ehci_hcd		*ehci;
-	int			nports, index, n;
-	int			count = PAGE_SIZE;
-	char			*ptr = buf;
-
-	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
-	nports = HCS_N_PORTS(ehci->hcs_params);
-
-	for (index = 0; index < nports; ++index) {
-		if (test_bit(index, &ehci->companion_ports)) {
-			n = scnprintf(ptr, count, "%d\n", index + 1);
-			ptr += n;
-			count -= n;
-		}
-	}
-	return ptr - buf;
-}
-
 /*
  * Sets the owner of a port
  */
@@ -528,58 +505,6 @@ static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner)
 	}
 }
 
-/*
- * Dedicate or undedicate a port to the companion controller.
- * Syntax is "[-]portnum", where a leading '-' sign means
- * return control of the port to the EHCI controller.
- */
-static ssize_t store_companion(struct device *dev,
-			       struct device_attribute *attr,
-			       const char *buf, size_t count)
-{
-	struct ehci_hcd		*ehci;
-	int			portnum, new_owner;
-
-	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
-	new_owner = PORT_OWNER;		/* Owned by companion */
-	if (sscanf(buf, "%d", &portnum) != 1)
-		return -EINVAL;
-	if (portnum < 0) {
-		portnum = - portnum;
-		new_owner = 0;		/* Owned by EHCI */
-	}
-	if (portnum <= 0 || portnum > HCS_N_PORTS(ehci->hcs_params))
-		return -ENOENT;
-	portnum--;
-	if (new_owner)
-		set_bit(portnum, &ehci->companion_ports);
-	else
-		clear_bit(portnum, &ehci->companion_ports);
-	set_owner(ehci, portnum, new_owner);
-	return count;
-}
-static DEVICE_ATTR(companion, 0644, show_companion, store_companion);
-
-static inline int create_companion_file(struct ehci_hcd *ehci)
-{
-	int	i = 0;
-
-	/* with integrated TT there is no companion! */
-	if (!ehci_is_TDI(ehci))
-		i = device_create_file(ehci_to_hcd(ehci)->self.controller,
-				       &dev_attr_companion);
-	return i;
-}
-
-static inline void remove_companion_file(struct ehci_hcd *ehci)
-{
-	/* with integrated TT there is no companion! */
-	if (!ehci_is_TDI(ehci))
-		device_remove_file(ehci_to_hcd(ehci)->self.controller,
-				   &dev_attr_companion);
-}
-
-
 /*-------------------------------------------------------------------------*/
 
 static int check_reset_complete (
@@ -891,10 +816,11 @@ static int ehci_hub_control (
 			 * power switching; they're allowed to just limit the
 			 * current.  khubd will turn the power back on.
 			 */
-			if (HCS_PPC (ehci->hcs_params)){
+			if ((temp & PORT_OC) && HCS_PPC(ehci->hcs_params)) {
 				ehci_writel(ehci,
 					temp & ~(PORT_RWC_BITS | PORT_POWER),
 					status_reg);
+				temp = ehci_readl(ehci, status_reg);
 			}
 		}
 
diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c
index b5a0bf649c9..592d5f76803 100644
--- a/drivers/usb/host/ehci-msm.c
+++ b/drivers/usb/host/ehci-msm.c
@@ -40,27 +40,9 @@ static int ehci_msm_reset(struct usb_hcd *hcd)
 	int retval;
 
 	ehci->caps = USB_CAPLENGTH;
-	ehci->regs = USB_CAPLENGTH +
-		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
-	dbg_hcs_params(ehci, "reset");
-	dbg_hcc_params(ehci, "reset");
-
-	/* cache the data to minimize the chip reads*/
-	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
 	hcd->has_tt = 1;
-	ehci->sbrn = HCD_USB2;
-
-	retval = ehci_halt(ehci);
-	if (retval)
-		return retval;
-
-	/* data structure init */
-	retval = ehci_init(hcd);
-	if (retval)
-		return retval;
 
-	retval = ehci_reset(ehci);
+	retval = ehci_setup(hcd);
 	if (retval)
 		return retval;
 
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 5d6bc624c96..0917e3a3246 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -103,7 +103,7 @@ qh_update (struct ehci_hcd *ehci, struct ehci_qh *qh, struct ehci_qtd *qtd)
 	if (!(hw->hw_info1 & cpu_to_hc32(ehci, 1 << 14))) {
 		unsigned	is_out, epnum;
 
-		is_out = !(qtd->hw_token & cpu_to_hc32(ehci, 1 << 8));
+		is_out = qh->is_out;
 		epnum = (hc32_to_cpup(ehci, &hw->hw_info1) >> 8) & 0x0f;
 		if (unlikely (!usb_gettoggle (qh->dev, epnum, is_out))) {
 			hw->hw_token &= ~cpu_to_hc32(ehci, QTD_TOGGLE);
@@ -946,6 +946,7 @@ done:
 	hw = qh->hw;
 	hw->hw_info1 = cpu_to_hc32(ehci, info1);
 	hw->hw_info2 = cpu_to_hc32(ehci, info2);
+	qh->is_out = !is_input;
 	usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1);
 	qh_refresh (ehci, qh);
 	return qh;
@@ -1231,6 +1232,8 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
 	prev->hw->hw_next = qh->hw->hw_next;
 	prev->qh_next = qh->qh_next;
+	if (ehci->qh_scan_next == qh)
+		ehci->qh_scan_next = qh->qh_next.qh;
 	wmb ();
 
 	/* If the controller isn't running, we don't have to wait for it */
@@ -1256,53 +1259,49 @@ static void scan_async (struct ehci_hcd *ehci)
 	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) && (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)
-				 * unless the controller is stopped.
-				 */
-				qh = qh_get (qh);
-				qh->stamp = ehci->stamp;
-				temp = qh_completions (ehci, qh);
-				if (qh->needs_rescan)
-					unlink_async(ehci, qh);
-				qh_put (qh);
-				if (temp != 0) {
-					goto rescan;
-				}
-			}
 
-			/* unlink idle entries, reducing DMA usage as well
-			 * as HCD schedule-scanning costs.  delay for any qh
-			 * we just scanned, there's a not-unusual case that it
-			 * doesn't stay idle for long.
-			 * (plus, avoids some kind of re-activation race.)
+	ehci->qh_scan_next = ehci->async->qh_next.qh;
+	while (ehci->qh_scan_next) {
+		qh = ehci->qh_scan_next;
+		ehci->qh_scan_next = qh->qh_next.qh;
+ rescan:
+		/* clean any finished work for this qh */
+		if (!list_empty(&qh->qtd_list)) {
+			int temp;
+
+			/*
+			 * Unlinks could happen here; completion reporting
+			 * drops the lock.  That's why ehci->qh_scan_next
+			 * always holds the next qh to scan; if the next qh
+			 * gets unlinked then ehci->qh_scan_next is adjusted
+			 * in start_unlink_async().
 			 */
-			if (list_empty(&qh->qtd_list)
-					&& qh->qh_state == QH_STATE_LINKED) {
-				if (!ehci->reclaim && (stopped ||
-					((ehci->stamp - qh->stamp) & 0x1fff)
-						>= EHCI_SHRINK_FRAMES * 8))
-					start_unlink_async(ehci, qh);
-				else
-					action = TIMER_ASYNC_SHRINK;
-			}
+			qh = qh_get(qh);
+			temp = qh_completions(ehci, qh);
+			if (qh->needs_rescan)
+				unlink_async(ehci, qh);
+			qh->unlink_time = jiffies + EHCI_SHRINK_JIFFIES;
+			qh_put(qh);
+			if (temp != 0)
+				goto rescan;
+		}
 
-			qh = qh->qh_next.qh;
-		} while (qh);
+		/* unlink idle entries, reducing DMA usage as well
+		 * as HCD schedule-scanning costs.  delay for any qh
+		 * we just scanned, there's a not-unusual case that it
+		 * doesn't stay idle for long.
+		 * (plus, avoids some kind of re-activation race.)
+		 */
+		if (list_empty(&qh->qtd_list)
+				&& qh->qh_state == QH_STATE_LINKED) {
+			if (!ehci->reclaim && (stopped ||
+					time_after_eq(jiffies, qh->unlink_time)))
+				start_unlink_async(ehci, qh);
+			else
+				action = TIMER_ASYNC_SHRINK;
+		}
 	}
 	if (action == TIMER_ASYNC_SHRINK)
 		timer_action (ehci, TIMER_ASYNC_SHRINK);
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index e3374c8f7b3..b3958b3d316 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -189,6 +189,100 @@ static void s5p_ehci_shutdown(struct platform_device *pdev)
 		hcd->driver->shutdown(hcd);
 }
 
+#ifdef CONFIG_PM
+static int s5p_ehci_suspend(struct device *dev)
+{
+	struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
+	struct usb_hcd *hcd = s5p_ehci->hcd;
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	struct platform_device *pdev = to_platform_device(dev);
+	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
+	unsigned long flags;
+	int rc = 0;
+
+	if (time_before(jiffies, ehci->next_statechange))
+		msleep(20);
+
+	/*
+	 * Root hub was already suspended. Disable irq emission and
+	 * mark HW unaccessible.  The PM and USB cores make sure that
+	 * the root hub is either suspended or stopped.
+	 */
+	ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
+	spin_lock_irqsave(&ehci->lock, flags);
+	ehci_writel(ehci, 0, &ehci->regs->intr_enable);
+	(void)ehci_readl(ehci, &ehci->regs->intr_enable);
+
+	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+	spin_unlock_irqrestore(&ehci->lock, flags);
+
+	if (pdata && pdata->phy_exit)
+		pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+	return rc;
+}
+
+static int s5p_ehci_resume(struct device *dev)
+{
+	struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
+	struct usb_hcd *hcd = s5p_ehci->hcd;
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	struct platform_device *pdev = to_platform_device(dev);
+	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
+
+	if (pdata && pdata->phy_init)
+		pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+	if (time_before(jiffies, ehci->next_statechange))
+		msleep(100);
+
+	/* Mark hardware accessible again as we are out of D3 state by now */
+	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
+		int	mask = INTR_MASK;
+
+		ehci_prepare_ports_for_controller_resume(ehci);
+		if (!hcd->self.root_hub->do_remote_wakeup)
+			mask &= ~STS_PCD;
+		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
+		ehci_readl(ehci, &ehci->regs->intr_enable);
+		return 0;
+	}
+
+	usb_root_hub_lost_power(hcd->self.root_hub);
+
+	(void) ehci_halt(ehci);
+	(void) ehci_reset(ehci);
+
+	/* emptying the schedule aborts any urbs */
+	spin_lock_irq(&ehci->lock);
+	if (ehci->reclaim)
+		end_unlink_async(ehci);
+	ehci_work(ehci);
+	spin_unlock_irq(&ehci->lock);
+
+	ehci_writel(ehci, ehci->command, &ehci->regs->command);
+	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
+	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */
+
+	/* here we "know" root ports should always stay powered */
+	ehci_port_power(ehci, 1);
+
+	hcd->state = HC_STATE_SUSPENDED;
+
+	return 0;
+}
+#else
+#define s5p_ehci_suspend	NULL
+#define s5p_ehci_resume		NULL
+#endif
+
+static const struct dev_pm_ops s5p_ehci_pm_ops = {
+	.suspend	= s5p_ehci_suspend,
+	.resume		= s5p_ehci_resume,
+};
+
 static struct platform_driver s5p_ehci_driver = {
 	.probe		= s5p_ehci_probe,
 	.remove		= __devexit_p(s5p_ehci_remove),
@@ -196,6 +290,7 @@ static struct platform_driver s5p_ehci_driver = {
 	.driver = {
 		.name	= "s5p-ehci",
 		.owner	= THIS_MODULE,
+		.pm	= &s5p_ehci_pm_ops,
 	}
 };
 
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 6c9fbe352f7..2abf8543f08 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -172,7 +172,7 @@ periodic_usecs (struct ehci_hcd *ehci, unsigned frame, unsigned uframe)
 		}
 	}
 #ifdef	DEBUG
-	if (usecs > 100)
+	if (usecs > ehci->uframe_periodic_max)
 		ehci_err (ehci, "uframe %d sched overrun: %d usecs\n",
 			frame * 8 + uframe, usecs);
 #endif
@@ -709,11 +709,8 @@ static int check_period (
 	if (uframe >= 8)
 		return 0;
 
-	/*
-	 * 80% periodic == 100 usec/uframe available
-	 * convert "usecs we need" to "max already claimed"
-	 */
-	usecs = 100 - usecs;
+	/* convert "usecs we need" to "max already claimed" */
+	usecs = ehci->uframe_periodic_max - usecs;
 
 	/* we "know" 2 and 4 uframe intervals were rejected; so
 	 * for period 0, check _every_ microframe in the schedule.
@@ -1286,9 +1283,9 @@ itd_slot_ok (
 {
 	uframe %= period;
 	do {
-		/* can't commit more than 80% periodic == 100 usec */
+		/* can't commit more than uframe_periodic_max usec */
 		if (periodic_usecs (ehci, uframe >> 3, uframe & 0x7)
-				> (100 - usecs))
+				> (ehci->uframe_periodic_max - usecs))
 			return 0;
 
 		/* we know urb->interval is 2^N uframes */
@@ -1345,7 +1342,7 @@ sitd_slot_ok (
 #endif
 
 		/* check starts (OUT uses more than one) */
-		max_used = 100 - stream->usecs;
+		max_used = ehci->uframe_periodic_max - stream->usecs;
 		for (tmp = stream->raw_mask & 0xff; tmp; tmp >>= 1, uf++) {
 			if (periodic_usecs (ehci, frame, uf) > max_used)
 				return 0;
@@ -1354,7 +1351,7 @@ sitd_slot_ok (
 		/* for IN, check CSPLIT */
 		if (stream->c_usecs) {
 			uf = uframe & 7;
-			max_used = 100 - stream->c_usecs;
+			max_used = ehci->uframe_periodic_max - stream->c_usecs;
 			do {
 				tmp = 1 << uf;
 				tmp <<= 8;
diff --git a/drivers/usb/host/ehci-sysfs.c b/drivers/usb/host/ehci-sysfs.c
new file mode 100644
index 00000000000..14ced00ba22
--- /dev/null
+++ b/drivers/usb/host/ehci-sysfs.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2007 by Alan Stern
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* this file is part of ehci-hcd.c */
+
+
+/* Display the ports dedicated to the companion controller */
+static ssize_t show_companion(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct ehci_hcd		*ehci;
+	int			nports, index, n;
+	int			count = PAGE_SIZE;
+	char			*ptr = buf;
+
+	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	nports = HCS_N_PORTS(ehci->hcs_params);
+
+	for (index = 0; index < nports; ++index) {
+		if (test_bit(index, &ehci->companion_ports)) {
+			n = scnprintf(ptr, count, "%d\n", index + 1);
+			ptr += n;
+			count -= n;
+		}
+	}
+	return ptr - buf;
+}
+
+/*
+ * Dedicate or undedicate a port to the companion controller.
+ * Syntax is "[-]portnum", where a leading '-' sign means
+ * return control of the port to the EHCI controller.
+ */
+static ssize_t store_companion(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct ehci_hcd		*ehci;
+	int			portnum, new_owner;
+
+	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	new_owner = PORT_OWNER;		/* Owned by companion */
+	if (sscanf(buf, "%d", &portnum) != 1)
+		return -EINVAL;
+	if (portnum < 0) {
+		portnum = - portnum;
+		new_owner = 0;		/* Owned by EHCI */
+	}
+	if (portnum <= 0 || portnum > HCS_N_PORTS(ehci->hcs_params))
+		return -ENOENT;
+	portnum--;
+	if (new_owner)
+		set_bit(portnum, &ehci->companion_ports);
+	else
+		clear_bit(portnum, &ehci->companion_ports);
+	set_owner(ehci, portnum, new_owner);
+	return count;
+}
+static DEVICE_ATTR(companion, 0644, show_companion, store_companion);
+
+
+/*
+ * Display / Set uframe_periodic_max
+ */
+static ssize_t show_uframe_periodic_max(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct ehci_hcd		*ehci;
+	int			n;
+
+	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	n = scnprintf(buf, PAGE_SIZE, "%d\n", ehci->uframe_periodic_max);
+	return n;
+}
+
+
+static ssize_t store_uframe_periodic_max(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct ehci_hcd		*ehci;
+	unsigned		uframe_periodic_max;
+	unsigned		frame, uframe;
+	unsigned short		allocated_max;
+	unsigned long		flags;
+	ssize_t			ret;
+
+	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
+		return -EINVAL;
+
+	if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
+		ehci_info(ehci, "rejecting invalid request for "
+				"uframe_periodic_max=%u\n", uframe_periodic_max);
+		return -EINVAL;
+	}
+
+	ret = -EINVAL;
+
+	/*
+	 * lock, so that our checking does not race with possible periodic
+	 * bandwidth allocation through submitting new urbs.
+	 */
+	spin_lock_irqsave (&ehci->lock, flags);
+
+	/*
+	 * for request to decrease max periodic bandwidth, we have to check
+	 * every microframe in the schedule to see whether the decrease is
+	 * possible.
+	 */
+	if (uframe_periodic_max < ehci->uframe_periodic_max) {
+		allocated_max = 0;
+
+		for (frame = 0; frame < ehci->periodic_size; ++frame)
+			for (uframe = 0; uframe < 7; ++uframe)
+				allocated_max = max(allocated_max,
+						    periodic_usecs (ehci, frame, uframe));
+
+		if (allocated_max > uframe_periodic_max) {
+			ehci_info(ehci,
+				"cannot decrease uframe_periodic_max becase "
+				"periodic bandwidth is already allocated "
+				"(%u > %u)\n",
+				allocated_max, uframe_periodic_max);
+			goto out_unlock;
+		}
+	}
+
+	/* increasing is always ok */
+
+	ehci_info(ehci, "setting max periodic bandwidth to %u%% "
+			"(== %u usec/uframe)\n",
+			100*uframe_periodic_max/125, uframe_periodic_max);
+
+	if (uframe_periodic_max != 100)
+		ehci_warn(ehci, "max periodic bandwidth set is non-standard\n");
+
+	ehci->uframe_periodic_max = uframe_periodic_max;
+	ret = count;
+
+out_unlock:
+	spin_unlock_irqrestore (&ehci->lock, flags);
+	return ret;
+}
+static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max);
+
+
+static inline int create_sysfs_files(struct ehci_hcd *ehci)
+{
+	struct device	*controller = ehci_to_hcd(ehci)->self.controller;
+	int	i = 0;
+
+	/* with integrated TT there is no companion! */
+	if (!ehci_is_TDI(ehci))
+		i = device_create_file(controller, &dev_attr_companion);
+	if (i)
+		goto out;
+
+	i = device_create_file(controller, &dev_attr_uframe_periodic_max);
+out:
+	return i;
+}
+
+static inline void remove_sysfs_files(struct ehci_hcd *ehci)
+{
+	struct device	*controller = ehci_to_hcd(ehci)->self.controller;
+
+	/* with integrated TT there is no companion! */
+	if (!ehci_is_TDI(ehci))
+		device_remove_file(controller, &dev_attr_companion);
+
+	device_remove_file(controller, &dev_attr_uframe_periodic_max);
+}
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index bd6ff489baf..cc7d337ec35 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -75,6 +75,7 @@ struct ehci_hcd {			/* one per controller */
 	struct ehci_qh		*async;
 	struct ehci_qh		*dummy;		/* For AMD quirk use */
 	struct ehci_qh		*reclaim;
+	struct ehci_qh		*qh_scan_next;
 	unsigned		scanning : 1;
 
 	/* periodic schedule support */
@@ -87,6 +88,8 @@ struct ehci_hcd {			/* one per controller */
 	union ehci_shadow	*pshadow;	/* mirror hw periodic table */
 	int			next_uframe;	/* scan periodic, start here */
 	unsigned		periodic_sched;	/* periodic activity count */
+	unsigned		uframe_periodic_max; /* max periodic time per uframe */
+
 
 	/* list of itds & sitds completed while clock_frame was still active */
 	struct list_head	cached_itd_list;
@@ -117,7 +120,6 @@ struct ehci_hcd {			/* one per controller */
 	struct timer_list	iaa_watchdog;
 	struct timer_list	watchdog;
 	unsigned long		actions;
-	unsigned		stamp;
 	unsigned		periodic_stamp;
 	unsigned		random_frame;
 	unsigned long		next_statechange;
@@ -343,6 +345,7 @@ struct ehci_qh {
 	struct ehci_qh		*reclaim;	/* next to reclaim */
 
 	struct ehci_hcd		*ehci;
+	unsigned long		unlink_time;
 
 	/*
 	 * Do NOT use atomic operations for QH refcounting. On some CPUs
@@ -374,6 +377,7 @@ struct ehci_qh {
 #define NO_FRAME ((unsigned short)~0)			/* pick new start */
 
 	struct usb_device	*dev;		/* access to TT */
+	unsigned		is_out:1;	/* bulk or intr OUT */
 	unsigned		clearing_tt:1;	/* Clear-TT-Buf in progress */
 };
 
diff --git a/drivers/usb/host/ohci-sh.c b/drivers/usb/host/ohci-sh.c
index f47867ff78c..14cecb52a9f 100644
--- a/drivers/usb/host/ohci-sh.c
+++ b/drivers/usb/host/ohci-sh.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2008 Renesas Solutions Corp.
  *
- * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index fd930618c28..a9d315906e3 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -35,6 +35,8 @@
 #define OHCI_INTRSTATUS		0x0c
 #define OHCI_INTRENABLE		0x10
 #define OHCI_INTRDISABLE	0x14
+#define OHCI_FMINTERVAL		0x34
+#define OHCI_HCR		(1 << 0)	/* host controller reset */
 #define OHCI_OCR		(1 << 3)	/* ownership change request */
 #define OHCI_CTRL_RWC		(1 << 9)	/* remote wakeup connected */
 #define OHCI_CTRL_IR		(1 << 8)	/* interrupt routing */
@@ -497,6 +499,32 @@ static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
 
 	/* reset controller, preserving RWC (and possibly IR) */
 	writel(control & OHCI_CTRL_MASK, base + OHCI_CONTROL);
+	readl(base + OHCI_CONTROL);
+
+	/* Some NVIDIA controllers stop working if kept in RESET for too long */
+	if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) {
+		u32 fminterval;
+		int cnt;
+
+		/* drive reset for at least 50 ms (7.1.7.5) */
+		msleep(50);
+
+		/* software reset of the controller, preserving HcFmInterval */
+		fminterval = readl(base + OHCI_FMINTERVAL);
+		writel(OHCI_HCR, base + OHCI_CMDSTATUS);
+
+		/* reset requires max 10 us delay */
+		for (cnt = 30; cnt > 0; --cnt) {	/* ... allow extra time */
+			if ((readl(base + OHCI_CMDSTATUS) & OHCI_HCR) == 0)
+				break;
+			udelay(1);
+		}
+		writel(fminterval, base + OHCI_FMINTERVAL);
+
+		/* Now we're in the SUSPEND state with all devices reset
+		 * and wakeups and interrupts disabled
+		 */
+	}
 
 	/*
 	 * disable interrupts
@@ -507,20 +535,34 @@ static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
 	iounmap(base);
 }
 
+static const struct dmi_system_id __initconst ehci_dmi_nohandoff_table[] = {
+	{
+		/*  Pegatron Lucid (ExoPC) */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "EXOPG06411"),
+			DMI_MATCH(DMI_BIOS_VERSION, "Lucid-CE-133"),
+		},
+	},
+	{
+		/*  Pegatron Lucid (Ordissimo AIRIS) */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "M11JB"),
+			DMI_MATCH(DMI_BIOS_VERSION, "Lucid-GE-133"),
+		},
+	},
+	{ }
+};
+
 static void __devinit ehci_bios_handoff(struct pci_dev *pdev,
 					void __iomem *op_reg_base,
 					u32 cap, u8 offset)
 {
 	int try_handoff = 1, tried_handoff = 0;
 
-	/* The Pegatron Lucid (ExoPC) tablet sporadically waits for 90
-	 * seconds trying the handoff on its unused controller.  Skip
-	 * it. */
+	/* The Pegatron Lucid tablet sporadically waits for 98 seconds trying
+	 * the handoff on its unused controller.  Skip it. */
 	if (pdev->vendor == 0x8086 && pdev->device == 0x283a) {
-		const char *dmi_bn = dmi_get_system_info(DMI_BOARD_NAME);
-		const char *dmi_bv = dmi_get_system_info(DMI_BIOS_VERSION);
-		if (dmi_bn && !strcmp(dmi_bn, "EXOPG06411") &&
-		    dmi_bv && !strcmp(dmi_bv, "Lucid-CE-133"))
+		if (dmi_check_system(ehci_dmi_nohandoff_table))
 			try_handoff = 0;
 	}
 
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 4586369dda0..40a0d8b03ad 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -6,7 +6,7 @@
  * Portions Copyright (C) 2004-2005 David Brownell
  * Portions Copyright (C) 1999 Roman Weissgaerber
  *
- * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -1438,7 +1438,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
 	if (pipenum > 0)
 		r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
 	if (urb->transfer_buffer) {
-		r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
+		r8a66597_write_fifo(r8a66597, td->pipe, buf, size);
 		if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
 			r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
 	}
@@ -2306,7 +2306,7 @@ static int r8a66597_bus_resume(struct usb_hcd *hcd)
 
 		dbg("resume port = %d", port);
 		rh->port &= ~USB_PORT_STAT_SUSPEND;
-		rh->port |= USB_PORT_STAT_C_SUSPEND < 16;
+		rh->port |= USB_PORT_STAT_C_SUSPEND << 16;
 		r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
 		msleep(50);
 		r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h
index 25563e9a90b..f28782d20ee 100644
--- a/drivers/usb/host/r8a66597.h
+++ b/drivers/usb/host/r8a66597.h
@@ -201,11 +201,26 @@ static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val,
 	iowrite16(val, r8a66597->reg + offset);
 }
 
+static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
+				 u16 val, u16 pat, unsigned long offset)
+{
+	u16 tmp;
+	tmp = r8a66597_read(r8a66597, offset);
+	tmp = tmp & (~pat);
+	tmp = tmp | val;
+	r8a66597_write(r8a66597, tmp, offset);
+}
+
+#define r8a66597_bclr(r8a66597, val, offset)	\
+			r8a66597_mdfy(r8a66597, 0, val, offset)
+#define r8a66597_bset(r8a66597, val, offset)	\
+			r8a66597_mdfy(r8a66597, val, 0, offset)
+
 static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
-				       unsigned long offset, u16 *buf,
+				       struct r8a66597_pipe *pipe, u16 *buf,
 				       int len)
 {
-	void __iomem *fifoaddr = r8a66597->reg + offset;
+	void __iomem *fifoaddr = r8a66597->reg + pipe->fifoaddr;
 	unsigned long count;
 	unsigned char *pb;
 	int i;
@@ -230,26 +245,15 @@ static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
 		iowrite16_rep(fifoaddr, buf, len);
 		if (unlikely(odd)) {
 			buf = &buf[len];
+			if (r8a66597->pdata->wr0_shorted_to_wr1)
+				r8a66597_bclr(r8a66597, MBW_16, pipe->fifosel);
 			iowrite8((unsigned char)*buf, fifoaddr);
+			if (r8a66597->pdata->wr0_shorted_to_wr1)
+				r8a66597_bset(r8a66597, MBW_16, pipe->fifosel);
 		}
 	}
 }
 
-static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
-				 u16 val, u16 pat, unsigned long offset)
-{
-	u16 tmp;
-	tmp = r8a66597_read(r8a66597, offset);
-	tmp = tmp & (~pat);
-	tmp = tmp | val;
-	r8a66597_write(r8a66597, tmp, offset);
-}
-
-#define r8a66597_bclr(r8a66597, val, offset)	\
-			r8a66597_mdfy(r8a66597, 0, val, offset)
-#define r8a66597_bset(r8a66597, val, offset)	\
-			r8a66597_mdfy(r8a66597, val, 0, offset)
-
 static inline unsigned long get_syscfg_reg(int port)
 {
 	return port == 0 ? SYSCFG0 : SYSCFG1;
diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c
index 1f50b4468e8..e9b0f043455 100644
--- a/drivers/usb/host/xhci-dbg.c
+++ b/drivers/usb/host/xhci-dbg.c
@@ -266,11 +266,11 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
 		xhci_dbg(xhci, "Interrupter target = 0x%x\n",
 			 GET_INTR_TARGET(le32_to_cpu(trb->link.intr_target)));
 		xhci_dbg(xhci, "Cycle bit = %u\n",
-			 (unsigned int) (le32_to_cpu(trb->link.control) & TRB_CYCLE));
+			 le32_to_cpu(trb->link.control) & TRB_CYCLE);
 		xhci_dbg(xhci, "Toggle cycle bit = %u\n",
-			 (unsigned int) (le32_to_cpu(trb->link.control) & LINK_TOGGLE));
+			 le32_to_cpu(trb->link.control) & LINK_TOGGLE);
 		xhci_dbg(xhci, "No Snoop bit = %u\n",
-			 (unsigned int) (le32_to_cpu(trb->link.control) & TRB_NO_SNOOP));
+			 le32_to_cpu(trb->link.control) & TRB_NO_SNOOP);
 		break;
 	case TRB_TYPE(TRB_TRANSFER):
 		address = le64_to_cpu(trb->trans_event.buffer);
@@ -284,9 +284,9 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
 		address = le64_to_cpu(trb->event_cmd.cmd_trb);
 		xhci_dbg(xhci, "Command TRB pointer = %llu\n", address);
 		xhci_dbg(xhci, "Completion status = %u\n",
-			 (unsigned int) GET_COMP_CODE(le32_to_cpu(trb->event_cmd.status)));
+			 GET_COMP_CODE(le32_to_cpu(trb->event_cmd.status)));
 		xhci_dbg(xhci, "Flags = 0x%x\n",
-			 (unsigned int) le32_to_cpu(trb->event_cmd.flags));
+			 le32_to_cpu(trb->event_cmd.flags));
 		break;
 	default:
 		xhci_dbg(xhci, "Unknown TRB with TRB type ID %u\n",
@@ -318,10 +318,10 @@ void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg)
 	for (i = 0; i < TRBS_PER_SEGMENT; ++i) {
 		trb = &seg->trbs[i];
 		xhci_dbg(xhci, "@%016llx %08x %08x %08x %08x\n", addr,
-			 (u32)lower_32_bits(le64_to_cpu(trb->link.segment_ptr)),
-			 (u32)upper_32_bits(le64_to_cpu(trb->link.segment_ptr)),
-			 (unsigned int) le32_to_cpu(trb->link.intr_target),
-			 (unsigned int) le32_to_cpu(trb->link.control));
+			 lower_32_bits(le64_to_cpu(trb->link.segment_ptr)),
+			 upper_32_bits(le64_to_cpu(trb->link.segment_ptr)),
+			 le32_to_cpu(trb->link.intr_target),
+			 le32_to_cpu(trb->link.control));
 		addr += sizeof(*trb);
 	}
 }
@@ -402,8 +402,8 @@ void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst)
 			 addr,
 			 lower_32_bits(le64_to_cpu(entry->seg_addr)),
 			 upper_32_bits(le64_to_cpu(entry->seg_addr)),
-			 (unsigned int) le32_to_cpu(entry->seg_size),
-			 (unsigned int) le32_to_cpu(entry->rsvd));
+			 le32_to_cpu(entry->seg_size),
+			 le32_to_cpu(entry->rsvd));
 		addr += sizeof(*entry);
 	}
 }
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index fcb7f7efc86..d446886b22b 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -89,8 +89,8 @@ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev,
 		return;
 	prev->next = next;
 	if (link_trbs) {
-		prev->trbs[TRBS_PER_SEGMENT-1].link.
-			segment_ptr = cpu_to_le64(next->dma);
+		prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr =
+			cpu_to_le64(next->dma);
 
 		/* Set the last TRB in the segment to have a TRB type ID of Link TRB */
 		val = le32_to_cpu(prev->trbs[TRBS_PER_SEGMENT-1].link.control);
@@ -187,8 +187,8 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
 
 	if (link_trbs) {
 		/* See section 4.9.2.1 and 6.4.4.1 */
-		prev->trbs[TRBS_PER_SEGMENT-1].link.
-			control |= cpu_to_le32(LINK_TOGGLE);
+		prev->trbs[TRBS_PER_SEGMENT-1].link.control |=
+			cpu_to_le32(LINK_TOGGLE);
 		xhci_dbg(xhci, "Wrote link toggle flag to"
 				" segment %p (virtual), 0x%llx (DMA)\n",
 				prev, (unsigned long long)prev->dma);
@@ -549,8 +549,8 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
 		addr = cur_ring->first_seg->dma |
 			SCT_FOR_CTX(SCT_PRI_TR) |
 			cur_ring->cycle_state;
-		stream_info->stream_ctx_array[cur_stream].
-			stream_ring = cpu_to_le64(addr);
+		stream_info->stream_ctx_array[cur_stream].stream_ring =
+			cpu_to_le64(addr);
 		xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n",
 				cur_stream, (unsigned long long) addr);
 
@@ -786,7 +786,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
 	xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n",
 		 slot_id,
 		 &xhci->dcbaa->dev_context_ptrs[slot_id],
-		 (unsigned long long) le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
+		 le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
 
 	return 1;
 fail:
@@ -890,19 +890,19 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG);
 
 	/* 3) Only the control endpoint is valid - one endpoint context */
-	slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | (u32) udev->route);
+	slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | udev->route);
 	switch (udev->speed) {
 	case USB_SPEED_SUPER:
-		slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_SS);
+		slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_SS);
 		break;
 	case USB_SPEED_HIGH:
-		slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_HS);
+		slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_HS);
 		break;
 	case USB_SPEED_FULL:
-		slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_FS);
+		slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_FS);
 		break;
 	case USB_SPEED_LOW:
-		slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_LS);
+		slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_LS);
 		break;
 	case USB_SPEED_WIRELESS:
 		xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
@@ -916,7 +916,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	port_num = xhci_find_real_port_number(xhci, udev);
 	if (!port_num)
 		return -EINVAL;
-	slot_ctx->dev_info2 |= cpu_to_le32((u32) ROOT_HUB_PORT(port_num));
+	slot_ctx->dev_info2 |= cpu_to_le32(ROOT_HUB_PORT(port_num));
 	/* Set the port number in the virtual_device to the faked port number */
 	for (top_dev = udev; top_dev->parent && top_dev->parent->parent;
 			top_dev = top_dev->parent)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 70cacbbe7fb..7113d16e2d3 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -113,15 +113,13 @@ static int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
 	if (ring == xhci->event_ring)
 		return trb == &seg->trbs[TRBS_PER_SEGMENT];
 	else
-		return (le32_to_cpu(trb->link.control) & TRB_TYPE_BITMASK)
-			== TRB_TYPE(TRB_LINK);
+		return TRB_TYPE_LINK_LE32(trb->link.control);
 }
 
 static int enqueue_is_link_trb(struct xhci_ring *ring)
 {
 	struct xhci_link_trb *link = &ring->enqueue->link;
-	return ((le32_to_cpu(link->control) & TRB_TYPE_BITMASK) ==
-		TRB_TYPE(TRB_LINK));
+	return TRB_TYPE_LINK_LE32(link->control);
 }
 
 /* Updates trb to point to the next TRB in the ring, and updates seg if the next
@@ -372,7 +370,7 @@ static struct xhci_segment *find_trb_seg(
 	while (cur_seg->trbs > trb ||
 			&cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) {
 		generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic;
-		if (le32_to_cpu(generic_trb->field[3]) & LINK_TOGGLE)
+		if (generic_trb->field[3] & cpu_to_le32(LINK_TOGGLE))
 			*cycle_state ^= 0x1;
 		cur_seg = cur_seg->next;
 		if (cur_seg == start_seg)
@@ -489,8 +487,8 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
 	}
 
 	trb = &state->new_deq_ptr->generic;
-	if ((le32_to_cpu(trb->field[3]) & TRB_TYPE_BITMASK) ==
-	    TRB_TYPE(TRB_LINK) && (le32_to_cpu(trb->field[3]) & LINK_TOGGLE))
+	if (TRB_TYPE_LINK_LE32(trb->field[3]) &&
+	    (trb->field[3] & cpu_to_le32(LINK_TOGGLE)))
 		state->new_cycle_state ^= 0x1;
 	next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr);
 
@@ -525,8 +523,7 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
 	for (cur_seg = cur_td->start_seg, cur_trb = cur_td->first_trb;
 			true;
 			next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
-		if ((le32_to_cpu(cur_trb->generic.field[3]) & TRB_TYPE_BITMASK)
-		    == TRB_TYPE(TRB_LINK)) {
+		if (TRB_TYPE_LINK_LE32(cur_trb->generic.field[3])) {
 			/* Unchain any chained Link TRBs, but
 			 * leave the pointers intact.
 			 */
@@ -1000,7 +997,7 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci,
 	 * but we don't care.
 	 */
 	xhci_dbg(xhci, "Ignoring reset ep completion code of %u\n",
-		 (unsigned int) GET_COMP_CODE(le32_to_cpu(event->status)));
+		 GET_COMP_CODE(le32_to_cpu(event->status)));
 
 	/* HW with the reset endpoint quirk needs to have a configure endpoint
 	 * command complete before the endpoint can be used.  Queue that here
@@ -1458,7 +1455,8 @@ static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci,
 		 * endpoint anyway.  Check if a babble halted the
 		 * endpoint.
 		 */
-		if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) == EP_STATE_HALTED)
+		if ((ep_ctx->ep_info & cpu_to_le32(EP_STATE_MASK)) ==
+		    cpu_to_le32(EP_STATE_HALTED))
 			return 1;
 
 	return 0;
@@ -1753,10 +1751,8 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
 		for (cur_trb = ep_ring->dequeue,
 		     cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
 		     next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
-			if ((le32_to_cpu(cur_trb->generic.field[3]) &
-			 TRB_TYPE_BITMASK) != TRB_TYPE(TRB_TR_NOOP) &&
-			    (le32_to_cpu(cur_trb->generic.field[3]) &
-			 TRB_TYPE_BITMASK) != TRB_TYPE(TRB_LINK))
+			if (!TRB_TYPE_NOOP_LE32(cur_trb->generic.field[3]) &&
+			    !TRB_TYPE_LINK_LE32(cur_trb->generic.field[3]))
 				len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
 		}
 		len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) -
@@ -1885,10 +1881,8 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
 		for (cur_trb = ep_ring->dequeue, cur_seg = ep_ring->deq_seg;
 				cur_trb != event_trb;
 				next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
-			if ((le32_to_cpu(cur_trb->generic.field[3]) &
-			 TRB_TYPE_BITMASK) != TRB_TYPE(TRB_TR_NOOP) &&
-			    (le32_to_cpu(cur_trb->generic.field[3]) &
-			 TRB_TYPE_BITMASK) != TRB_TYPE(TRB_LINK))
+			if (!TRB_TYPE_NOOP_LE32(cur_trb->generic.field[3]) &&
+			    !TRB_TYPE_LINK_LE32(cur_trb->generic.field[3]))
 				td->urb->actual_length +=
 					TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
 		}
@@ -2047,8 +2041,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 				  TRB_TO_SLOT_ID(le32_to_cpu(event->flags)),
 				  ep_index);
 			xhci_dbg(xhci, "Event TRB with TRB type ID %u\n",
-				 (unsigned int) (le32_to_cpu(event->flags)
-						 & TRB_TYPE_BITMASK)>>10);
+				 (le32_to_cpu(event->flags) &
+				  TRB_TYPE_BITMASK)>>10);
 			xhci_print_trb_offsets(xhci, (union xhci_trb *) event);
 			if (ep->skip) {
 				ep->skip = false;
@@ -2119,9 +2113,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		 * corresponding TD has been cancelled. Just ignore
 		 * the TD.
 		 */
-		if ((le32_to_cpu(event_trb->generic.field[3])
-			     & TRB_TYPE_BITMASK)
-				 == TRB_TYPE(TRB_TR_NOOP)) {
+		if (TRB_TYPE_NOOP_LE32(event_trb->generic.field[3])) {
 			xhci_dbg(xhci,
 				 "event_trb is a no-op TRB. Skip it\n");
 			goto cleanup;
@@ -2452,7 +2444,7 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
 				next->link.control |= cpu_to_le32(TRB_CHAIN);
 
 			wmb();
-			next->link.control ^= cpu_to_le32((u32) TRB_CYCLE);
+			next->link.control ^= cpu_to_le32(TRB_CYCLE);
 
 			/* Toggle the cycle bit after the last ring segment. */
 			if (last_trb_on_last_seg(xhci, ring, ring->enq_seg, next)) {
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index f5fe1ac301a..763f484bc09 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1342,8 +1342,8 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	/* If the HC already knows the endpoint is disabled,
 	 * or the HCD has noted it is disabled, ignore this request
 	 */
-	if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) ==
-	    EP_STATE_DISABLED ||
+	if (((ep_ctx->ep_info & cpu_to_le32(EP_STATE_MASK)) ==
+	     cpu_to_le32(EP_STATE_DISABLED)) ||
 	    le32_to_cpu(ctrl_ctx->drop_flags) &
 	    xhci_get_endpoint_flag(&ep->desc)) {
 		xhci_warn(xhci, "xHCI %s called with disabled ep %p\n",
@@ -1758,8 +1758,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
 		/* Enqueue pointer can be left pointing to the link TRB,
 		 * we must handle that
 		 */
-		if ((le32_to_cpu(command->command_trb->link.control)
-		     & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+		if (TRB_TYPE_LINK_LE32(command->command_trb->link.control))
 			command->command_trb =
 				xhci->cmd_ring->enq_seg->next->trbs;
 
@@ -2559,8 +2558,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
 	/* Enqueue pointer can be left pointing to the link TRB,
 	 * we must handle that
 	 */
-	if ((le32_to_cpu(reset_device_cmd->command_trb->link.control)
-	     & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+	if (TRB_TYPE_LINK_LE32(reset_device_cmd->command_trb->link.control))
 		reset_device_cmd->command_trb =
 			xhci->cmd_ring->enq_seg->next->trbs;
 
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index d8bbf5ccb10..cae8e23308b 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1072,6 +1072,13 @@ union xhci_trb {
 /* Get NEC firmware revision. */
 #define	TRB_NEC_GET_FW		49
 
+#define TRB_TYPE_LINK(x)	(((x) & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+/* Above, but for __le32 types -- can avoid work by swapping constants: */
+#define TRB_TYPE_LINK_LE32(x)	(((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
+				 cpu_to_le32(TRB_TYPE(TRB_LINK)))
+#define TRB_TYPE_NOOP_LE32(x)	(((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
+				 cpu_to_le32(TRB_TYPE(TRB_TR_NOOP)))
+
 #define NEC_FW_MINOR(p)		(((p) >> 0) & 0xff)
 #define NEC_FW_MAJOR(p)		(((p) >> 8) & 0xff)