Merge branch 'master' into gfs2

35 files changed, 4207 insertions, 252 deletions

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index b93d71d28db..cf10cbc98f8 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -83,6 +83,7 @@ config USB_OHCI_HCD
 	tristate "OHCI HCD support"
 	depends on USB && USB_ARCH_HAS_OHCI
 	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
+	select I2C if ARCH_PNX4008
 	---help---
 	  The Open Host Controller Interface (OHCI) is a standard for accessing
 	  USB 1.1 host controller hardware.  It does more in hardware than Intel's
@@ -141,6 +142,34 @@ config USB_UHCI_HCD
 	  To compile this driver as a module, choose M here: the
 	  module will be called uhci-hcd.
 
+config USB_U132_HCD
+	tristate "Elan U132 Adapter Host Controller"
+	depends on USB && USB_FTDI_ELAN
+	default M
+	help
+	  The U132 adapter is a USB to CardBus adapter specifically designed
+	  for PC cards that contain an OHCI host controller. Typical PC cards
+	  are the Orange Mobile 3G Option GlobeTrotter Fusion card. The U132
+	  adapter will *NOT* work with PC cards that do not contain an OHCI
+	  controller.
+
+	  For those PC cards that contain multiple OHCI controllers only ther
+	  first one is used.
+
+	  The driver consists of two modules, the "ftdi-elan" module is a
+	  USB client driver that interfaces to the FTDI chip within ELAN's
+	  USB-to-PCMCIA adapter, and this "u132-hcd" module is a USB host
+	  controller driver that talks to the OHCI controller within the
+	  CardBus cards that are inserted in the U132 adapter.
+
+	  This driver has been tested with a CardBus OHCI USB adapter, and
+	  worked with a USB PEN Drive inserted into the first USB port of
+	  the PCCARD. A rather pointless thing to do, but useful for testing.
+
+	  It is safe to say M here.
+
+	  See also <http://www.elandigitalsystems.com/support/ufaq/u132linux.php>
+
 config USB_SL811_HCD
 	tristate "SL811HS HCD support"
 	depends on USB
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index e3020f4b17b..a2e58c86849 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -14,4 +14,5 @@ obj-$(CONFIG_USB_OHCI_HCD)	+= ohci-hcd.o
 obj-$(CONFIG_USB_UHCI_HCD)	+= uhci-hcd.o
 obj-$(CONFIG_USB_SL811_HCD)	+= sl811-hcd.o
 obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o
+obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o
 obj-$(CONFIG_ETRAX_ARCH_V10)	+= hc_crisv10.o
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index 26ed757d22a..5d1b12aad77 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -200,6 +200,7 @@ static const struct hc_driver ehci_au1xxx_hc_driver = {
 	.reset = ehci_init,
 	.start = ehci_run,
 	.stop = ehci_stop,
+	.shutdown = ehci_shutdown,
 
 	/*
 	 * managing i/o requests and associated device resources
@@ -268,6 +269,7 @@ MODULE_ALIAS("au1xxx-ehci");
 static struct platform_driver ehci_hcd_au1xxx_driver = {
 	.probe = ehci_hcd_au1xxx_drv_probe,
 	.remove = ehci_hcd_au1xxx_drv_remove,
+	.shutdown = usb_hcd_platform_shutdown,
 	/*.suspend      = ehci_hcd_au1xxx_drv_suspend, */
 	/*.resume       = ehci_hcd_au1xxx_drv_resume, */
 	.driver = {
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index 65ac9fef3a7..23b95b2bfe1 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2001-2002 by David Brownell
- * 
+ *
  * 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
@@ -65,7 +65,7 @@ static void dbg_hcs_params (struct ehci_hcd *ehci, char *label)
 		for (i = 0; i < HCS_N_PORTS (params); i++) {
 			// FIXME MIPS won't readb() ...
 			byte = readb (&ehci->caps->portroute[(i>>1)]);
-			sprintf(tmp, "%d ", 
+			sprintf(tmp, "%d ",
 				((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf)));
 			strcat(buf, tmp);
 		}
@@ -141,12 +141,12 @@ dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
 }
 
 static void __attribute__((__unused__))
-dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) 
+dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
 {
 	ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n",
 		label, itd->frame, itd, le32_to_cpu(itd->hw_next), itd->urb);
 	ehci_dbg (ehci,
-		"  trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", 
+		"  trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 		le32_to_cpu(itd->hw_transaction[0]),
 		le32_to_cpu(itd->hw_transaction[1]),
 		le32_to_cpu(itd->hw_transaction[2]),
@@ -156,7 +156,7 @@ dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
 		le32_to_cpu(itd->hw_transaction[6]),
 		le32_to_cpu(itd->hw_transaction[7]));
 	ehci_dbg (ehci,
-		"  buf:   %08x %08x %08x %08x %08x %08x %08x\n", 
+		"  buf:   %08x %08x %08x %08x %08x %08x %08x\n",
 		le32_to_cpu(itd->hw_bufp[0]),
 		le32_to_cpu(itd->hw_bufp[1]),
 		le32_to_cpu(itd->hw_bufp[2]),
@@ -171,12 +171,12 @@ dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
 }
 
 static void __attribute__((__unused__))
-dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd) 
+dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd)
 {
 	ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n",
 		label, sitd->frame, sitd, le32_to_cpu(sitd->hw_next), sitd->urb);
 	ehci_dbg (ehci,
-		"  addr %08x sched %04x result %08x buf %08x %08x\n", 
+		"  addr %08x sched %04x result %08x buf %08x %08x\n",
 		le32_to_cpu(sitd->hw_fullspeed_ep),
 		le32_to_cpu(sitd->hw_uframe),
 		le32_to_cpu(sitd->hw_results),
@@ -451,7 +451,7 @@ show_async (struct class_device *class_dev, char *buf)
 	*buf = 0;
 
 	bus = class_get_devdata(class_dev);
-	hcd = bus->hcpriv;
+	hcd = bus_to_hcd(bus);
 	ehci = hcd_to_ehci (hcd);
 	next = buf;
 	size = PAGE_SIZE;
@@ -497,7 +497,7 @@ show_periodic (struct class_device *class_dev, char *buf)
 	seen_count = 0;
 
 	bus = class_get_devdata(class_dev);
-	hcd = bus->hcpriv;
+	hcd = bus_to_hcd(bus);
 	ehci = hcd_to_ehci (hcd);
 	next = buf;
 	size = PAGE_SIZE;
@@ -634,7 +634,7 @@ show_registers (struct class_device *class_dev, char *buf)
 	static char		label [] = "";
 
 	bus = class_get_devdata(class_dev);
-	hcd = bus->hcpriv;
+	hcd = bus_to_hcd(bus);
 	ehci = hcd_to_ehci (hcd);
 	next = buf;
 	size = PAGE_SIZE;
@@ -754,9 +754,7 @@ show_registers (struct class_device *class_dev, char *buf)
 	}
 
 	if (ehci->reclaim) {
-		temp = scnprintf (next, size, "reclaim qh %p%s\n",
-				ehci->reclaim,
-				ehci->reclaim_ready ? " ready" : "");
+		temp = scnprintf (next, size, "reclaim qh %p\n", ehci->reclaim);
 		size -= temp;
 		next += temp;
 	}
@@ -785,10 +783,11 @@ static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
 static inline void create_debug_files (struct ehci_hcd *ehci)
 {
 	struct class_device *cldev = ehci_to_hcd(ehci)->self.class_dev;
+	int retval;
 
-	class_device_create_file(cldev, &class_device_attr_async);
-	class_device_create_file(cldev, &class_device_attr_periodic);
-	class_device_create_file(cldev, &class_device_attr_registers);
+	retval = class_device_create_file(cldev, &class_device_attr_async);
+	retval = class_device_create_file(cldev, &class_device_attr_periodic);
+	retval = class_device_create_file(cldev, &class_device_attr_registers);
 }
 
 static inline void remove_debug_files (struct ehci_hcd *ehci)
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index d030516edfb..1a915e982c1 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -285,6 +285,7 @@ static const struct hc_driver ehci_fsl_hc_driver = {
 	.resume = ehci_bus_resume,
 #endif
 	.stop = ehci_stop,
+	.shutdown = ehci_shutdown,
 
 	/*
 	 * managing i/o requests and associated device resources
@@ -329,6 +330,7 @@ MODULE_ALIAS("fsl-ehci");
 static struct platform_driver ehci_fsl_driver = {
 	.probe = ehci_fsl_drv_probe,
 	.remove = ehci_fsl_drv_remove,
+	.shutdown = usb_hcd_platform_shutdown,
 	.driver = {
 		   .name = "fsl-ehci",
 		   },
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index d63177a8eae..5ac91859113 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2000-2004 by David Brownell
- * 
+ *
  * 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
@@ -70,7 +70,7 @@
  * 2002-08-06	Handling for bulk and interrupt transfers is mostly shared;
  *	only scheduling is different, no arbitrary limitations.
  * 2002-07-25	Sanity check PCI reads, mostly for better cardbus support,
- * 	clean up HC run state handshaking.
+ *	clean up HC run state handshaking.
  * 2002-05-24	Preliminary FS/LS interrupts, using scheduling shortcuts
  * 2002-05-11	Clear TT errors for FS/LS ctrl/bulk.  Fill in some other
  *	missing pieces:  enabling 64bit dma, handoff from BIOS/SMM.
@@ -111,7 +111,7 @@ static const char	hcd_name [] = "ehci_hcd";
 #define	EHCI_TUNE_MULT_TT	1
 #define	EHCI_TUNE_FLS		2	/* (small) 256 frame schedule */
 
-#define EHCI_IAA_JIFFIES	(HZ/100)	/* arbitrary; ~10 msec */
+#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_JIFFIES	(HZ/200)	/* async qh unlink delay */
@@ -254,6 +254,7 @@ static void ehci_quiesce (struct ehci_hcd *ehci)
 
 /*-------------------------------------------------------------------------*/
 
+static void end_unlink_async (struct ehci_hcd *ehci, struct pt_regs *regs);
 static void ehci_work(struct ehci_hcd *ehci, struct pt_regs *regs);
 
 #include "ehci-hub.c"
@@ -263,28 +264,39 @@ static void ehci_work(struct ehci_hcd *ehci, struct pt_regs *regs);
 
 /*-------------------------------------------------------------------------*/
 
-static void ehci_watchdog (unsigned long param)
+static void ehci_iaa_watchdog (unsigned long param)
 {
 	struct ehci_hcd		*ehci = (struct ehci_hcd *) param;
 	unsigned long		flags;
+	u32			status;
 
 	spin_lock_irqsave (&ehci->lock, flags);
+	WARN_ON(!ehci->reclaim);
 
-	/* lost IAA irqs wedge things badly; seen with a vt8235 */
+	/* lost IAA irqs wedge things badly; seen first with a vt8235 */
 	if (ehci->reclaim) {
-		u32		status = readl (&ehci->regs->status);
-
+		status = readl (&ehci->regs->status);
 		if (status & STS_IAA) {
 			ehci_vdbg (ehci, "lost IAA\n");
 			COUNT (ehci->stats.lost_iaa);
 			writel (STS_IAA, &ehci->regs->status);
-			ehci->reclaim_ready = 1;
+			end_unlink_async (ehci, NULL);
 		}
 	}
 
- 	/* stop async processing after it's idled a bit */
+	spin_unlock_irqrestore (&ehci->lock, flags);
+}
+
+static void ehci_watchdog (unsigned long param)
+{
+	struct ehci_hcd		*ehci = (struct ehci_hcd *) param;
+	unsigned long		flags;
+
+	spin_lock_irqsave (&ehci->lock, flags);
+
+	/* stop async processing after it's idled a bit */
 	if (test_bit (TIMER_ASYNC_OFF, &ehci->actions))
- 		start_unlink_async (ehci, ehci->async);
+		start_unlink_async (ehci, ehci->async);
 
 	/* ehci could run by timer, without IRQs ... */
 	ehci_work (ehci, NULL);
@@ -292,21 +304,20 @@ static void ehci_watchdog (unsigned long param)
 	spin_unlock_irqrestore (&ehci->lock, flags);
 }
 
-/* Reboot notifiers kick in for silicon on any bus (not just pci, etc).
+/* ehci_shutdown kick in for silicon on any bus (not just pci, etc).
  * This forcibly disables dma and IRQs, helping kexec and other cases
  * where the next system software may expect clean state.
  */
-static int
-ehci_reboot (struct notifier_block *self, unsigned long code, void *null)
+static void
+ehci_shutdown (struct usb_hcd *hcd)
 {
-	struct ehci_hcd		*ehci;
+	struct ehci_hcd	*ehci;
 
-	ehci = container_of (self, struct ehci_hcd, reboot_notifier);
+	ehci = hcd_to_ehci (hcd);
 	(void) ehci_halt (ehci);
 
 	/* make BIOS/etc use companion controller during reboot */
 	writel (0, &ehci->regs->configured_flag);
-	return 0;
 }
 
 static void ehci_port_power (struct ehci_hcd *ehci, int is_on)
@@ -334,8 +345,6 @@ static void ehci_port_power (struct ehci_hcd *ehci, int is_on)
 static void ehci_work (struct ehci_hcd *ehci, struct pt_regs *regs)
 {
 	timer_action_done (ehci, TIMER_IO_WATCHDOG);
-	if (ehci->reclaim_ready)
-		end_unlink_async (ehci, regs);
 
 	/* another CPU may drop ehci->lock during a schedule scan while
 	 * it reports urb completions.  this flag guards against bogus
@@ -370,6 +379,7 @@ static void ehci_stop (struct usb_hcd *hcd)
 
 	/* no more interrupts ... */
 	del_timer_sync (&ehci->watchdog);
+	del_timer_sync (&ehci->iaa_watchdog);
 
 	spin_lock_irq(&ehci->lock);
 	if (HC_IS_RUNNING (hcd->state))
@@ -381,7 +391,6 @@ static void ehci_stop (struct usb_hcd *hcd)
 
 	/* let companion controllers work when we aren't */
 	writel (0, &ehci->regs->configured_flag);
-	unregister_reboot_notifier (&ehci->reboot_notifier);
 
 	remove_debug_files (ehci);
 
@@ -417,6 +426,10 @@ static int ehci_init(struct usb_hcd *hcd)
 	ehci->watchdog.function = ehci_watchdog;
 	ehci->watchdog.data = (unsigned long) ehci;
 
+	init_timer(&ehci->iaa_watchdog);
+	ehci->iaa_watchdog.function = ehci_iaa_watchdog;
+	ehci->iaa_watchdog.data = (unsigned long) ehci;
+
 	/*
 	 * hw default: 1K periodic list heads, one per frame.
 	 * periodic_size can shrink by USBCMD update if hcc_params allows.
@@ -427,13 +440,12 @@ static int ehci_init(struct usb_hcd *hcd)
 
 	/* controllers may cache some of the periodic schedule ... */
 	hcc_params = readl(&ehci->caps->hcc_params);
-	if (HCC_ISOC_CACHE(hcc_params)) 	// full frame cache
+	if (HCC_ISOC_CACHE(hcc_params))		// full frame cache
 		ehci->i_thresh = 8;
 	else					// N microframes cached
 		ehci->i_thresh = 2 + HCC_ISOC_THRES(hcc_params);
 
 	ehci->reclaim = NULL;
-	ehci->reclaim_ready = 0;
 	ehci->next_uframe = -1;
 
 	/*
@@ -483,9 +495,6 @@ static int ehci_init(struct usb_hcd *hcd)
 	}
 	ehci->command = temp;
 
-	ehci->reboot_notifier.notifier_call = ehci_reboot;
-	register_reboot_notifier(&ehci->reboot_notifier);
-
 	return 0;
 }
 
@@ -499,7 +508,6 @@ static int ehci_run (struct usb_hcd *hcd)
 
 	/* EHCI spec section 4.1 */
 	if ((retval = ehci_reset(ehci)) != 0) {
-		unregister_reboot_notifier(&ehci->reboot_notifier);
 		ehci_mem_cleanup(ehci);
 		return retval;
 	}
@@ -611,7 +619,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd, struct pt_regs *regs)
 	/* complete the unlinking of some qh [4.15.2.3] */
 	if (status & STS_IAA) {
 		COUNT (ehci->stats.reclaim);
-		ehci->reclaim_ready = 1;
+		end_unlink_async (ehci, regs);
 		bh = 1;
 	}
 
@@ -715,10 +723,14 @@ static int ehci_urb_enqueue (
 
 static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 {
-	/* if we need to use IAA and it's busy, defer */
-	if (qh->qh_state == QH_STATE_LINKED
-			&& ehci->reclaim
-			&& HC_IS_RUNNING (ehci_to_hcd(ehci)->state)) {
+	// BUG_ON(qh->qh_state != QH_STATE_LINKED);
+
+	/* failfast */
+	if (!HC_IS_RUNNING (ehci_to_hcd(ehci)->state))
+		end_unlink_async (ehci, NULL);
+
+	/* defer till later if busy */
+	else if (ehci->reclaim) {
 		struct ehci_qh		*last;
 
 		for (last = ehci->reclaim;
@@ -728,12 +740,8 @@ static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 		qh->qh_state = QH_STATE_UNLINK_WAIT;
 		last->reclaim = qh;
 
-	/* bypass IAA if the hc can't care */
-	} else if (!HC_IS_RUNNING (ehci_to_hcd(ehci)->state) && ehci->reclaim)
-		end_unlink_async (ehci, NULL);
-
-	/* something else might have unlinked the qh by now */
-	if (qh->qh_state == QH_STATE_LINKED)
+	/* start IAA cycle */
+	} else
 		start_unlink_async (ehci, qh);
 }
 
@@ -755,7 +763,19 @@ static int ehci_urb_dequeue (struct usb_hcd *hcd, struct urb *urb)
 		qh = (struct ehci_qh *) urb->hcpriv;
 		if (!qh)
 			break;
-		unlink_async (ehci, qh);
+		switch (qh->qh_state) {
+		case QH_STATE_LINKED:
+		case QH_STATE_COMPLETING:
+			unlink_async (ehci, qh);
+			break;
+		case QH_STATE_UNLINK:
+		case QH_STATE_UNLINK_WAIT:
+			/* already started */
+			break;
+		case QH_STATE_IDLE:
+			WARN_ON(1);
+			break;
+		}
 		break;
 
 	case PIPE_INTERRUPT:
@@ -847,6 +867,7 @@ rescan:
 		unlink_async (ehci, qh);
 		/* FALL THROUGH */
 	case QH_STATE_UNLINK:		/* wait for hw to finish? */
+	case QH_STATE_UNLINK_WAIT:
 idle_timeout:
 		spin_unlock_irqrestore (&ehci->lock, flags);
 		schedule_timeout_uninterruptible(1);
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index d03e3cad5ca..b2ee13c5851 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 by David Brownell
- * 
+ *
  * 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
@@ -48,7 +48,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
 	}
 	ehci->command = readl (&ehci->regs->command);
 	if (ehci->reclaim)
-		ehci->reclaim_ready = 1;
+		end_unlink_async (ehci, NULL);
 	ehci_work(ehci, NULL);
 
 	/* suspend any active/unsuspended ports, maybe allow wakeup */
@@ -103,10 +103,10 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
 
 	/* re-init operational registers in case we lost power */
 	if (readl (&ehci->regs->intr_enable) == 0) {
- 		/* at least some APM implementations will try to deliver
+		/* at least some APM implementations will try to deliver
 		 * IRQs right away, so delay them until we're ready.
- 		 */
- 		intr_enable = 1;
+		 */
+		intr_enable = 1;
 		writel (0, &ehci->regs->segment);
 		writel (ehci->periodic_dma, &ehci->regs->frame_list);
 		writel ((u32)ehci->async->qh_dma, &ehci->regs->async_next);
@@ -232,7 +232,7 @@ ehci_hub_status_data (struct usb_hcd *hcd, char *buf)
 		buf [1] = 0;
 		retval++;
 	}
-	
+
 	/* no hub change reports (bit 0) for now (power, ...) */
 
 	/* port N changes (bit N)? */
@@ -304,7 +304,7 @@ ehci_hub_descriptor (
 
 /*-------------------------------------------------------------------------*/
 
-#define	PORT_WAKE_BITS 	(PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
+#define	PORT_WAKE_BITS	(PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
 
 static int ehci_hub_control (
 	struct usb_hcd	*hcd,
diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c
index 766061e0260..a8ba2e1497a 100644
--- a/drivers/usb/host/ehci-mem.c
+++ b/drivers/usb/host/ehci-mem.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2001 by David Brownell
- * 
+ *
  * 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
@@ -25,7 +25,7 @@
  *	- data used only by the HCD ... kmalloc is fine
  *	- async and periodic schedules, shared by HC and HCD ... these
  *	  need to use dma_pool or dma_alloc_coherent
- *	- driver buffers, read/written by HC ... single shot DMA mapped 
+ *	- driver buffers, read/written by HC ... single shot DMA mapped
  *
  * There's also PCI "register" data, which is memory mapped.
  * No memory seen by this driver is pageable.
@@ -119,7 +119,7 @@ static inline void qh_put (struct ehci_qh *qh)
 
 /*-------------------------------------------------------------------------*/
 
-/* The queue heads and transfer descriptors are managed from pools tied 
+/* The queue heads and transfer descriptors are managed from pools tied
  * to each of the "per device" structures.
  * This is the initialisation and cleanup code.
  */
@@ -165,7 +165,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
 	int i;
 
 	/* QTDs for control/bulk/intr transfers */
-	ehci->qtd_pool = dma_pool_create ("ehci_qtd", 
+	ehci->qtd_pool = dma_pool_create ("ehci_qtd",
 			ehci_to_hcd(ehci)->self.controller,
 			sizeof (struct ehci_qtd),
 			32 /* byte alignment (for hw parts) */,
@@ -175,7 +175,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
 	}
 
 	/* QHs for control/bulk/intr transfers */
-	ehci->qh_pool = dma_pool_create ("ehci_qh", 
+	ehci->qh_pool = dma_pool_create ("ehci_qh",
 			ehci_to_hcd(ehci)->self.controller,
 			sizeof (struct ehci_qh),
 			32 /* byte alignment (for hw parts) */,
@@ -189,7 +189,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
 	}
 
 	/* ITD for high speed ISO transfers */
-	ehci->itd_pool = dma_pool_create ("ehci_itd", 
+	ehci->itd_pool = dma_pool_create ("ehci_itd",
 			ehci_to_hcd(ehci)->self.controller,
 			sizeof (struct ehci_itd),
 			32 /* byte alignment (for hw parts) */,
@@ -199,7 +199,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
 	}
 
 	/* SITD for full/low speed split ISO transfers */
-	ehci->sitd_pool = dma_pool_create ("ehci_sitd", 
+	ehci->sitd_pool = dma_pool_create ("ehci_sitd",
 			ehci_to_hcd(ehci)->self.controller,
 			sizeof (struct ehci_sitd),
 			32 /* byte alignment (for hw parts) */,
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index cadffacd945..08d0472d4f5 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -238,6 +238,12 @@ static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
 	writel (0, &ehci->regs->intr_enable);
 	(void)readl(&ehci->regs->intr_enable);
 
+	/* make sure snapshot being resumed re-enumerates everything */
+	if (message.event == PM_EVENT_PRETHAW) {
+		ehci_halt(ehci);
+		ehci_reset(ehci);
+	}
+
 	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
  bail:
 	spin_unlock_irqrestore (&ehci->lock, flags);
@@ -297,7 +303,7 @@ restart:
 	/* emptying the schedule aborts any urbs */
 	spin_lock_irq(&ehci->lock);
 	if (ehci->reclaim)
-		ehci->reclaim_ready = 1;
+		end_unlink_async (ehci, NULL);
 	ehci_work(ehci, NULL);
 	spin_unlock_irq(&ehci->lock);
 
@@ -332,6 +338,7 @@ static const struct hc_driver ehci_pci_hc_driver = {
 	.resume =		ehci_pci_resume,
 #endif
 	.stop =			ehci_stop,
+	.shutdown =		ehci_shutdown,
 
 	/*
 	 * managing i/o requests and associated device resources
@@ -378,4 +385,5 @@ static struct pci_driver ehci_pci_driver = {
 	.suspend =	usb_hcd_pci_suspend,
 	.resume =	usb_hcd_pci_resume,
 #endif
+	.shutdown = 	usb_hcd_pci_shutdown,
 };
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index e469221e7ec..7fc25b6bd7d 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 by David Brownell
- * 
+ *
  * 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
@@ -31,7 +31,7 @@
  * ISO traffic uses "ISO TD" (itd, and sitd) records, and (along with
  * interrupts) needs careful scheduling.  Performance improvements can be
  * an ongoing challenge.  That's in "ehci-sched.c".
- * 
+ *
  * USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs,
  * or otherwise through transaction translators (TTs) in USB 2.0 hubs using
  * (b) special fields in qh entries or (c) split iso entries.  TTs will
@@ -199,7 +199,7 @@ static void qtd_copy_status (
 				&& ((token & QTD_STS_MMF) != 0
 					|| QTD_CERR(token) == 0)
 				&& (!ehci_is_TDI(ehci)
-                	                || urb->dev->tt->hub !=
+			                || urb->dev->tt->hub !=
 					   ehci_to_hcd(ehci)->self.root_hub)) {
 #ifdef DEBUG
 			struct usb_device *tt = urb->dev->tt->hub;
@@ -364,7 +364,7 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh, struct pt_regs *regs)
 			 */
 			if (likely (urb->status == -EINPROGRESS))
 				continue;
-			
+
 			/* issue status after short control reads */
 			if (unlikely (do_status != 0)
 					&& QTD_PID (token) == 0 /* OUT */) {
@@ -388,7 +388,7 @@ halt:
 				wmb ();
 			}
 		}
- 
+
 		/* remove it from the queue */
 		spin_lock (&urb->lock);
 		qtd_copy_status (ehci, urb, qtd->length, token);
@@ -518,7 +518,7 @@ qh_urb_transaction (
 		/* for zero length DATA stages, STATUS is always IN */
 		if (len == 0)
 			token |= (1 /* "in" */ << 8);
-	} 
+	}
 
 	/*
 	 * data transfer stage:  buffer setup
@@ -759,7 +759,7 @@ qh_make (
 		}
 		break;
 	default:
- 		dbg ("bogus dev %p speed %d", urb->dev, urb->dev->speed);
+		dbg ("bogus dev %p speed %d", urb->dev, urb->dev->speed);
 done:
 		qh_put (qh);
 		return NULL;
@@ -967,17 +967,16 @@ static void end_unlink_async (struct ehci_hcd *ehci, struct pt_regs *regs)
 	struct ehci_qh		*qh = ehci->reclaim;
 	struct ehci_qh		*next;
 
-	timer_action_done (ehci, TIMER_IAA_WATCHDOG);
+	iaa_watchdog_done (ehci);
 
 	// qh->hw_next = cpu_to_le32 (qh->qh_dma);
 	qh->qh_state = QH_STATE_IDLE;
 	qh->qh_next.qh = NULL;
-	qh_put (qh);			// refcount from reclaim 
+	qh_put (qh);			// refcount from reclaim
 
 	/* other unlink(s) may be pending (in QH_STATE_UNLINK_WAIT) */
 	next = qh->reclaim;
 	ehci->reclaim = next;
-	ehci->reclaim_ready = 0;
 	qh->reclaim = NULL;
 
 	qh_completions (ehci, qh, regs);
@@ -1031,7 +1030,7 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 			timer_action_done (ehci, TIMER_ASYNC_OFF);
 		}
 		return;
-	} 
+	}
 
 	qh->qh_state = QH_STATE_UNLINK;
 	ehci->reclaim = qh = qh_get (qh);
@@ -1046,17 +1045,16 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
 	if (unlikely (ehci_to_hcd(ehci)->state == HC_STATE_HALT)) {
 		/* if (unlikely (qh->reclaim != 0))
-		 * 	this will recurse, probably not much
+		 *	this will recur