Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6

Documentation/DocBook/usb.tmpl

@@ -291,7 +291,7 @@
 
 !Edrivers/usb/core/hcd.c
 !Edrivers/usb/core/hcd-pci.c
-!Edrivers/usb/core/buffer.c
+!Idrivers/usb/core/buffer.c
     </chapter>
 
     <chapter>

Documentation/input/yealink.txt

@@ -2,7 +2,6 @@ Driver documentation for yealink usb-p1k phones
 
 0. Status
 ~~~~~~~~~
-
 The p1k is a relatively cheap usb 1.1 phone with:
   - keyboard		full support, yealink.ko / input event API
   - LCD			full support, yealink.ko / sysfs API
@@ -17,9 +16,8 @@ For vendor documentation see http://www.yealink.com
 
 1. Compilation (stand alone version)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
 Currently only kernel 2.6.x.y versions are supported.
-In order to build the yealink.ko module do:
+In order to build the yealink.ko module do
 
   make
 
@@ -28,6 +26,21 @@ the Makefile is pointing to the location where your kernel sources
 are located, default /usr/src/linux.
 
 
+1.1 Troubleshooting
+~~~~~~~~~~~~~~~~~~~
+Q: Module yealink compiled and installed without any problem but phone
+   is not initialized and does not react to any actions.
+A: If you see something like:
+   hiddev0: USB HID v1.00 Device [Yealink Network Technology Ltd. VOIP USB Phone
+   in dmesg, it means that the hid driver has grabbed the device first. Try to
+   load module yealink before any other usb hid driver. Please see the
+   instructions provided by your distribution on module configuration.
+
+Q: Phone is working now (displays version and accepts keypad input) but I can't
+   find the sysfs files.
+A: The sysfs files are located on the particular usb endpoint. On most
+   distributions you can do: "find /sys/ -name get_icons" for a hint.
+
 
 2. keyboard features
 ~~~~~~~~~~~~~~~~~~~~

Documentation/kernel-parameters.txt

@@ -1517,8 +1517,6 @@ running once the system is up.
 	uart6850=	[HW,OSS]
 			Format: <io>,<irq>
 
-	usb-handoff	[HW] Enable early USB BIOS -> OS handoff
-
 	usbhid.mousepoll=
 			[USBHID] The interval which mice are to be polled at.
 

MAINTAINERS

@@ -116,12 +116,6 @@ M:	ajk@iehk.rwth-aachen.de
 L:	linux-hams@vger.kernel.org
 S:	Maintained
 
-YEALINK PHONE DRIVER
-P:	Henk Vergonet
-M:	Henk.Vergonet@gmail.com
-L:	usbb2k-api-dev@nongnu.org
-S:	Maintained
-
 8139CP 10/100 FAST ETHERNET DRIVER
 P:	Jeff Garzik
 M:	jgarzik@pobox.com
@@ -2495,14 +2489,6 @@ L:	linux-kernel@vger.kernel.org
 L:	linux-usb-devel@lists.sourceforge.net
 S:	Supported
 
-USB BLUETOOTH TTY CONVERTER DRIVER
-P:	Greg Kroah-Hartman
-M:	greg@kroah.com
-L:	linux-usb-users@lists.sourceforge.net
-L:	linux-usb-devel@lists.sourceforge.net
-S:	Maintained
-W:	http://www.kroah.com/linux-usb/
-
 USB CDC ETHERNET DRIVER
 P:	Greg Kroah-Hartman
 M:	greg@kroah.com
@@ -2863,6 +2849,12 @@ M:	jpr@f6fbb.org
 L:	linux-hams@vger.kernel.org
 S:	Maintained
 
+YEALINK PHONE DRIVER
+P:	Henk Vergonet
+M:	Henk.Vergonet@gmail.com
+L:	usbb2k-api-dev@nongnu.org
+S:	Maintained
+
 YMFPCI YAMAHA PCI SOUND (Use ALSA instead)
 P:	Pete Zaitcev
 M:	zaitcev@yahoo.com

drivers/Makefile

@@ -5,7 +5,7 @@
 # Rewritten to use lists instead of if-statements.
 #
 
-obj-$(CONFIG_PCI)		+= pci/
+obj-$(CONFIG_PCI)		+= pci/ usb/
 obj-$(CONFIG_PARISC)		+= parisc/
 obj-y				+= video/
 obj-$(CONFIG_ACPI)		+= acpi/

drivers/base/power/main.c

@@ -30,23 +30,6 @@ LIST_HEAD(dpm_off_irq);
 DECLARE_MUTEX(dpm_sem);
 DECLARE_MUTEX(dpm_list_sem);
 
-/*
- * PM Reference Counting.
- */
-
-static inline void device_pm_hold(struct device * dev)
-{
-	if (dev)
-		atomic_inc(&dev->power.pm_users);
-}
-
-static inline void device_pm_release(struct device * dev)
-{
-	if (dev)
-		atomic_dec(&dev->power.pm_users);
-}
-
-
 /**
  *	device_pm_set_parent - Specify power dependency.
  *	@dev:		Device who needs power.
@@ -62,10 +45,8 @@ static inline void device_pm_release(struct device * dev)
 
 void device_pm_set_parent(struct device * dev, struct device * parent)
 {
-	struct device * old_parent = dev->power.pm_parent;
-	device_pm_release(old_parent);
-	dev->power.pm_parent = parent;
-	device_pm_hold(parent);
+	put_device(dev->power.pm_parent);
+	dev->power.pm_parent = get_device(parent);
 }
 EXPORT_SYMBOL_GPL(device_pm_set_parent);
 
@@ -75,7 +56,6 @@ int device_pm_add(struct device * dev)
 
 	pr_debug("PM: Adding info for %s:%s\n",
 		 dev->bus ? dev->bus->name : "No Bus", dev->kobj.name);
-	atomic_set(&dev->power.pm_users, 0);
 	down(&dpm_list_sem);
 	list_add_tail(&dev->power.entry, &dpm_active);
 	device_pm_set_parent(dev, dev->parent);
@@ -91,7 +71,7 @@ void device_pm_remove(struct device * dev)
 		 dev->bus ? dev->bus->name : "No Bus", dev->kobj.name);
 	down(&dpm_list_sem);
 	dpm_sysfs_remove(dev);
-	device_pm_release(dev->power.pm_parent);
+	put_device(dev->power.pm_parent);
 	list_del_init(&dev->power.entry);
 	up(&dpm_list_sem);
 }

drivers/base/power/power.h

@@ -67,9 +67,6 @@ extern int suspend_device(struct device *, pm_message_t);
  * runtime.c
  */
 
-extern int dpm_runtime_suspend(struct device *, pm_message_t);
-extern void dpm_runtime_resume(struct device *);
-
 #else /* CONFIG_PM */
 
 
@@ -82,14 +79,4 @@ static inline void device_pm_remove(struct device * dev)
 
 }
 
-static inline int dpm_runtime_suspend(struct device * dev, pm_message_t state)
-{
-	return 0;
-}
-
-static inline void dpm_runtime_resume(struct device * dev)
-{
-
-}
-
 #endif

drivers/base/power/runtime.c

@@ -36,6 +36,7 @@ void dpm_runtime_resume(struct device * dev)
 	runtime_resume(dev);
 	up(&dpm_sem);
 }
+EXPORT_SYMBOL(dpm_runtime_resume);
 
 
 /**

drivers/block/ub.c

@@ -1512,7 +1512,7 @@ static void ub_state_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
 	scmd->nsg = 1;
 	sg = &scmd->sgv[0];
 	sg->page = virt_to_page(sc->top_sense);
-	sg->offset = (unsigned int)sc->top_sense & (PAGE_SIZE-1);
+	sg->offset = (unsigned long)sc->top_sense & (PAGE_SIZE-1);
 	sg->length = UB_SENSE_SIZE;
 	scmd->len = UB_SENSE_SIZE;
 	scmd->lun = cmd->lun;
@@ -1891,7 +1891,7 @@ static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
 	cmd->nsg = 1;
 	sg = &cmd->sgv[0];
 	sg->page = virt_to_page(p);
-	sg->offset = (unsigned int)p & (PAGE_SIZE-1);
+	sg->offset = (unsigned long)p & (PAGE_SIZE-1);
 	sg->length = 8;
 	cmd->len = 8;
 	cmd->lun = lun;

drivers/pci/quirks.c

@@ -7,6 +7,9 @@
  *
  *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
  *
+ *  Init/reset quirks for USB host controllers should be in the
+ *  USB quirks file, where their drivers can access reuse it.
+ *
  *  The bridge optimization stuff has been removed. If you really
  *  have a silly BIOS which is unable to set your host bridge right,
  *  use the PowerTweak utility (see http://powertweak.sourceforge.net).
@@ -644,28 +647,6 @@ static void quirk_via_irq(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
 
-/*
- * PIIX3 USB: We have to disable USB interrupts that are
- * hardwired to PIRQD# and may be shared with an
- * external device.
- *
- * Legacy Support Register (LEGSUP):
- *     bit13:  USB PIRQ Enable (USBPIRQDEN),
- *     bit4:   Trap/SMI On IRQ Enable (USBSMIEN).
- *
- * We mask out all r/wc bits, too.
- */
-static void __devinit quirk_piix3_usb(struct pci_dev *dev)
-{
-	u16 legsup;
-
-	pci_read_config_word(dev, 0xc0, &legsup);
-	legsup &= 0x50ef;
-	pci_write_config_word(dev, 0xc0, legsup);
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82371SB_2,	quirk_piix3_usb );
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82371AB_2,	quirk_piix3_usb );
-
 /*
  * VIA VT82C598 has its device ID settable and many BIOSes
  * set it to the ID of VT82C597 for backward compatibility.
@@ -1039,234 +1020,6 @@ static void __init quirk_sis_96x_smbus(struct pci_dev *dev)
 	pci_read_config_byte(dev, 0x77, &val);
 }
 
-
-#define UHCI_USBLEGSUP		0xc0		/* legacy support */
-#define UHCI_USBCMD		0		/* command register */
-#define UHCI_USBSTS		2		/* status register */
-#define UHCI_USBINTR		4		/* interrupt register */
-#define UHCI_USBLEGSUP_DEFAULT	0x2000		/* only PIRQ enable set */
-#define UHCI_USBCMD_RUN		(1 << 0)	/* RUN/STOP bit */
-#define UHCI_USBCMD_GRESET	(1 << 2)	/* Global reset */
-#define UHCI_USBCMD_CONFIGURE	(1 << 6)	/* config semaphore */
-#define UHCI_USBSTS_HALTED	(1 << 5)	/* HCHalted bit */
-
-#define OHCI_CONTROL		0x04
-#define OHCI_CMDSTATUS		0x08
-#define OHCI_INTRSTATUS		0x0c
-#define OHCI_INTRENABLE		0x10
-#define OHCI_INTRDISABLE	0x14
-#define OHCI_OCR		(1 << 3)	/* ownership change request */
-#define OHCI_CTRL_IR		(1 << 8)	/* interrupt routing */
-#define OHCI_INTR_OC		(1 << 30)	/* ownership change */
-
-#define EHCI_HCC_PARAMS		0x08		/* extended capabilities */
-#define EHCI_USBCMD		0		/* command register */
-#define EHCI_USBCMD_RUN		(1 << 0)	/* RUN/STOP bit */
-#define EHCI_USBSTS		4		/* status register */
-#define EHCI_USBSTS_HALTED	(1 << 12)	/* HCHalted bit */
-#define EHCI_USBINTR		8		/* interrupt register */
-#define EHCI_USBLEGSUP		0		/* legacy support register */
-#define EHCI_USBLEGSUP_BIOS	(1 << 16)	/* BIOS semaphore */
-#define EHCI_USBLEGSUP_OS	(1 << 24)	/* OS semaphore */
-#define EHCI_USBLEGCTLSTS	4		/* legacy control/status */
-#define EHCI_USBLEGCTLSTS_SOOE	(1 << 13)	/* SMI on ownership change */
-
-int usb_early_handoff __devinitdata = 0;
-static int __init usb_handoff_early(char *str)
-{
-	usb_early_handoff = 1;
-	return 0;
-}
-__setup("usb-handoff", usb_handoff_early);
-
-static void __devinit quirk_usb_handoff_uhci(struct pci_dev *pdev)
-{
-	unsigned long base = 0;
-	int wait_time, delta;
-	u16 val, sts;
-	int i;
-
-	for (i = 0; i < PCI_ROM_RESOURCE; i++)
-		if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
-			base = pci_resource_start(pdev, i);
-			break;
-		}
-
-	if (!base)
-		return;
-
-	/*
-	 * stop controller
-	 */
-	sts = inw(base + UHCI_USBSTS);
-	val = inw(base + UHCI_USBCMD);
-	val &= ~(u16)(UHCI_USBCMD_RUN | UHCI_USBCMD_CONFIGURE);
-	outw(val, base + UHCI_USBCMD);
-
-	/*
-	 * wait while it stops if it was running
-	 */
-	if ((sts & UHCI_USBSTS_HALTED) == 0)
-	{
-		wait_time = 1000;
-		delta = 100;
-
-		do {
-			outw(0x1f, base + UHCI_USBSTS);
-			udelay(delta);
-			wait_time -= delta;
-			val = inw(base + UHCI_USBSTS);
-			if (val & UHCI_USBSTS_HALTED)
-				break;
-		} while (wait_time > 0);
-	}
-
-	/*
-	 * disable interrupts & legacy support
-	 */
-	outw(0, base + UHCI_USBINTR);
-	outw(0x1f, base + UHCI_USBSTS);
-	pci_read_config_word(pdev, UHCI_USBLEGSUP, &val);
-	if (val & 0xbf) 
-		pci_write_config_word(pdev, UHCI_USBLEGSUP, UHCI_USBLEGSUP_DEFAULT);
-		
-}
-
-static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
-{
-	void __iomem *base;
-	int wait_time;
-
-	base = ioremap_nocache(pci_resource_start(pdev, 0),
-				     pci_resource_len(pdev, 0));
-	if (base == NULL) return;
-
-	if (readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) {
-		wait_time = 500; /* 0.5 seconds */
-		writel(OHCI_INTR_OC, base + OHCI_INTRENABLE);
-		writel(OHCI_OCR, base + OHCI_CMDSTATUS);
-		while (wait_time > 0 && 
-				readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) {
-			wait_time -= 10;
-			msleep(10);
-		}
-	}
-
-	/*
-	 * disable interrupts
-	 */
-	writel(~(u32)0, base + OHCI_INTRDISABLE);
-	writel(~(u32)0, base + OHCI_INTRSTATUS);
-
-	iounmap(base);
-}
-
-static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
-{
-	int wait_time, delta;
-	void __iomem *base, *op_reg_base;
-	u32 hcc_params, val, temp;
-	u8 cap_length;
-
-	base = ioremap_nocache(pci_resource_start(pdev, 0),
-				pci_resource_len(pdev, 0));
-	if (base == NULL) return;
-
-	cap_length = readb(base);
-	op_reg_base = base + cap_length;
-	hcc_params = readl(base + EHCI_HCC_PARAMS);
-	hcc_params = (hcc_params >> 8) & 0xff;
-	if (hcc_params) {
-		pci_read_config_dword(pdev, 
-					hcc_params + EHCI_USBLEGSUP,
-					&val);
-		if (((val & 0xff) == 1) && (val & EHCI_USBLEGSUP_BIOS)) {
-			/*
-			 * Ok, BIOS is in smm mode, try to hand off...
-			 */
-			pci_read_config_dword(pdev,
-						hcc_params + EHCI_USBLEGCTLSTS,
-						&temp);
-			pci_write_config_dword(pdev,
-						hcc_params + EHCI_USBLEGCTLSTS,
-						temp | EHCI_USBLEGCTLSTS_SOOE);
-			val |= EHCI_USBLEGSUP_OS;
-			pci_write_config_dword(pdev, 
-						hcc_params + EHCI_USBLEGSUP, 
-						val);
-
-			wait_time = 500;
-			do {
-				msleep(10);
-				wait_time -= 10;
-				pci_read_config_dword(pdev,
-						hcc_params + EHCI_USBLEGSUP,
-						&val);
-			} while (wait_time && (val & EHCI_USBLEGSUP_BIOS));
-			if (!wait_time) {
-				/*
-				 * well, possibly buggy BIOS...
-				 */
-				printk(KERN_WARNING "EHCI early BIOS handoff "
-						"failed (BIOS bug ?)\n");
-				pci_write_config_dword(pdev,
-						hcc_params + EHCI_USBLEGSUP,
-						EHCI_USBLEGSUP_OS);
-				pci_write_config_dword(pdev,
-						hcc_params + EHCI_USBLEGCTLSTS,
-						0);
-			}
-		}
-	}
-
-	/*
-	 * halt EHCI & disable its interrupts in any case
-	 */
-	val = readl(op_reg_base + EHCI_USBSTS);
-	if ((val & EHCI_USBSTS_HALTED) == 0) {
-		val = readl(op_reg_base + EHCI_USBCMD);
-		val &= ~EHCI_USBCMD_RUN;
-		writel(val, op_reg_base + EHCI_USBCMD);
-
-		wait_time = 2000;
-		delta = 100;
-		do {
-			writel(0x3f, op_reg_base + EHCI_USBSTS);
-			udelay(delta);
-			wait_time -= delta;
-			val = readl(op_reg_base + EHCI_USBSTS);
-			if ((val == ~(u32)0) || (val & EHCI_USBSTS_HALTED)) {
-				break;
-			}
-		} while (wait_time > 0);
-	}
-	writel(0, op_reg_base + EHCI_USBINTR);
-	writel(0x3f, op_reg_base + EHCI_USBSTS);
-
-	iounmap(base);
-
-	return;
-}
-
-
-
-static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev)
-{
-	if (!usb_early_handoff)
-		return;
-
-	if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x00)) { /* UHCI */
-		quirk_usb_handoff_uhci(pdev);
-	} else if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x10)) { /* OHCI */
-		quirk_usb_handoff_ohci(pdev);
-	} else if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x20)) { /* EHCI */
-		quirk_usb_disable_ehci(pdev);
-	}
-
-	return;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff);
-
 /*
  * ... This is further complicated by the fact that some SiS96x south
  * bridges pretend to be 85C503/5513 instead.  In that case see if we

drivers/usb/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_USB)		+= core/
 
 obj-$(CONFIG_USB_MON)		+= mon/
 
+obj-$(CONFIG_PCI)		+= host/
 obj-$(CONFIG_USB_EHCI_HCD)	+= host/
 obj-$(CONFIG_USB_ISP116X_HCD)	+= host/
 obj-$(CONFIG_USB_OHCI_HCD)	+= host/
@@ -17,7 +18,6 @@ obj-$(CONFIG_ETRAX_USB_HOST)	+= host/
 
 obj-$(CONFIG_USB_ACM)		+= class/
 obj-$(CONFIG_USB_AUDIO)		+= class/
-obj-$(CONFIG_USB_BLUETOOTH_TTY)	+= class/
 obj-$(CONFIG_USB_MIDI)		+= class/
 obj-$(CONFIG_USB_PRINTER)	+= class/
 

drivers/usb/class/Kconfig

@@ -28,29 +28,6 @@ config USB_AUDIO
 	  To compile this driver as a module, choose M here: the
 	  module will be called audio.
 
-comment "USB Bluetooth TTY can only be used with disabled Bluetooth subsystem"
-	depends on USB && BT
-
-config USB_BLUETOOTH_TTY
-	tristate "USB Bluetooth TTY support"
-	depends on USB && BT=n
-	---help---
-	  This driver implements a nonstandard tty interface to a Bluetooth
-	  device that can be used only by specialized Bluetooth HCI software.
-
-	  Say Y here if you want to use OpenBT Bluetooth stack (available
-	  at <http://developer.axis.com/software>), or other TTY based
-	  Bluetooth stacks, and want to connect a USB Bluetooth device
-	  to your computer's USB port.
-
-	  Do *not* enable this driver if you want to use generic Linux
-	  Bluetooth support.
-
-	  If in doubt, say N here.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bluetty.
-
 config USB_MIDI
 	tristate "USB MIDI support"
 	depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER

drivers/usb/class/Makefile

@@ -5,6 +5,5 @@
 
 obj-$(CONFIG_USB_ACM)		+= cdc-acm.o
 obj-$(CONFIG_USB_AUDIO)		+= audio.o
-obj-$(CONFIG_USB_BLUETOOTH_TTY)	+= bluetty.o
 obj-$(CONFIG_USB_MIDI)		+= usb-midi.o
 obj-$(CONFIG_USB_PRINTER)	+= usblp.o

drivers/usb/class/cdc-acm.c

@@ -827,11 +827,10 @@ static int acm_probe (struct usb_interface *intf,
 		return -ENODEV;
 	}
 
-	if (!(acm = kmalloc(sizeof(struct acm), GFP_KERNEL))) {
-		dev_dbg(&intf->dev, "out of memory (acm kmalloc)\n");
+	if (!(acm = kzalloc(sizeof(struct acm), GFP_KERNEL))) {
+		dev_dbg(&intf->dev, "out of memory (acm kzalloc)\n");
 		goto alloc_fail;
 	}
-	memset(acm, 0, sizeof(struct acm));
 
 	ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
 	readsize = le16_to_cpu(epread->wMaxPacketSize);

drivers/usb/class/usblp.c

@@ -844,9 +844,8 @@ static struct file_operations usblp_fops = {
 };
 
 static struct usb_class_driver usblp_class = {
-	.name =		"usb/lp%d",
+	.name =		"lp%d",
 	.fops =		&usblp_fops,
-	.mode =		S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
 	.minor_base =	USBLP_MINOR_BASE,
 };
 

drivers/usb/core/Kconfig

@@ -61,14 +61,17 @@ config USB_DYNAMIC_MINORS
 	  If you are unsure about this, say N here.
 
 config USB_SUSPEND
-	bool "USB suspend/resume (EXPERIMENTAL)"
+	bool "USB selective suspend/resume and wakeup (EXPERIMENTAL)"
 	depends on USB && PM && EXPERIMENTAL
 	help
 	  If you say Y here, you can use driver calls or the sysfs
 	  "power/state" file to suspend or resume individual USB
-	  peripherals.  There are many related features, such as
-	  remote wakeup and driver-specific suspend processing, that
-	  may not yet work as expected.
+	  peripherals.
+
+	  Also, USB "remote wakeup" signaling is supported, whereby some
+	  USB devices (like keyboards and network adapters) can wake up
+	  their parent hub.  That wakeup cascades up the USB tree, and
+	  could wake the system from states like suspend-to-RAM.
 
 	  If you are unsure about this, say N here.
 

drivers/usb/core/Makefile

@@ -3,7 +3,7 @@
 #
 
 usbcore-objs	:= usb.o hub.o hcd.o urb.o message.o \
-			config.o file.o buffer.o sysfs.o devio.o
+			config.o file.o buffer.o sysfs.o devio.o notify.o
 
 ifeq ($(CONFIG_PCI),y)
 	usbcore-objs	+= hcd-pci.o

drivers/usb/core/config.c

@@ -112,8 +112,12 @@ void usb_release_interface_cache(struct kref *ref)
 	struct usb_interface_cache *intfc = ref_to_usb_interface_cache(ref);
 	int j;
 
-	for (j = 0; j < intfc->num_altsetting; j++)
-		kfree(intfc->altsetting[j].endpoint);
+	for (j = 0; j < intfc->num_altsetting; j++) {
+		struct usb_host_interface *alt = &intfc->altsetting[j];
+
+		kfree(alt->endpoint);
+		kfree(alt->string);
+	}
 	kfree(intfc);
 }
 
@@ -188,10 +192,9 @@ static int usb_parse_interface(struct device *ddev, int cfgno,
 	}
 
 	len = sizeof(struct usb_host_endpoint) * num_ep;
-	alt->endpoint = kmalloc(len, GFP_KERNEL);
+	alt->endpoint = kzalloc(len, GFP_KERNEL);
 	if (!alt->endpoint)
 		return -ENOMEM;
-	memset(alt->endpoint, 0, len);
 
 	/* Parse all the endpoint descriptors */
 	n = 0;
@@ -353,10 +356,9 @@ static int usb_parse_configuration(struct device *ddev, int cfgidx,
 		}
 
 		len = sizeof(*intfc) + sizeof(struct usb_host_interface) * j;
-		config->intf_cache[i] = intfc = kmalloc(len, GFP_KERNEL);
+		config->intf_cache[i] = intfc = kzalloc(len, GFP_KERNEL);
 		if (!intfc)
 			return -ENOMEM;
-		memset(intfc, 0, len);
 		kref_init(&intfc->ref);
 	}
 
@@ -422,8 +424,6 @@ void usb_destroy_configuration(struct usb_device *dev)
 		struct usb_host_config *cf = &dev->config[c];
 
 		kfree(cf->string);
-		cf->string = NULL;
-
 		for (i = 0; i < cf->desc.bNumInterfaces; i++) {
 			if (cf->intf_cache[i])
 				kref_put(&cf->intf_cache[i]->ref, 
@@ -459,16 +459,14 @@ int usb_get_configuration(struct usb_device *dev)
 	}
 
 	length = ncfg * sizeof(struct usb_host_config);
-	dev->config = kmalloc(length, GFP_KERNEL);
+	dev->config = kzalloc(length, GFP_KERNEL);
 	if (!dev->config)
 		goto err2;
-	memset(dev->config, 0, length);
 
 	length = ncfg * sizeof(char *);
-	dev->rawdescriptors = kmalloc(length, GFP_KERNEL);
+	dev->rawdescriptors = kzalloc(length, GFP_KERNEL);
 	if (!dev->rawdescriptors)
 		goto err2;
-	memset(dev->rawdescriptors, 0, length);
 
 	buffer = kmalloc(USB_DT_CONFIG_SIZE, GFP_KERNEL);
 	if (!buffer)

drivers/usb/core/file.c

@@ -17,7 +17,6 @@
 
 #include <linux/config.h>
 #include <linux/module.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/spinlock.h>
 #include <linux/errno.h>
 
@@ -88,8 +87,6 @@ int usb_major_init(void)
 		goto out;
 	}
 
-	devfs_mk_dir("usb");
-
 out:
 	return error;
 }
@@ -97,7 +94,6 @@ int usb_major_init(void)
 void usb_major_cleanup(void)
 {
 	class_destroy(usb_class);
-	devfs_remove("usb");
 	unregister_chrdev(USB_MAJOR, "usb");
 }
 
@@ -112,8 +108,7 @@ void usb_major_cleanup(void)
  * enabled, the minor number will be based on the next available free minor,
  * starting at the class_driver->minor_base.
  *
- * This function also creates the devfs file for the usb device, if devfs
- * is enabled, and creates a usb class device in the sysfs tree.
+ * This function also creates a usb class device in the sysfs tree.
  *
  * usb_deregister_dev() must be called when the driver is done with
  * the minor numbers given out by this function.
@@ -162,11 +157,8 @@ int usb_register_dev(struct usb_interface *intf,
 
 	intf->minor = minor;
 
-	/* handle the devfs registration */
-	snprintf(name, BUS_ID_SIZE, class_driver->name, minor - minor_base);
-	devfs_mk_cdev(MKDEV(USB_MAJOR, minor), class_driver->mode, name);
-
 	/* create a usb class device for this usb interface */
+	snprintf(name, BUS_ID_SIZE, class_driver->name, minor - minor_base);
 	temp = strrchr(name, '/');
 	if (temp && (temp[1] != 0x00))
 		++temp;
@@ -179,7 +171,6 @@ int usb_register_dev(struct usb_interface *intf,
 		spin_lock (&minor_lock);
 		usb_minors[intf->minor] = NULL;
 		spin_unlock (&minor_lock);
-		devfs_remove (name);
 		retval = PTR_ERR(intf->class_dev);
 	}
 exit:
@@ -197,8 +188,7 @@ EXPORT_SYMBOL(usb_register_dev);
  * call to usb_register_dev() (usually when the device is disconnected
  * from the system.)
  *
- * This function also cleans up the devfs file for the usb device, if devfs
- * is enabled, and removes the usb class device from the sysfs tree.
+ * This function also removes the usb class device from the sysfs tree.
  *
  * This should be called by all drivers that use the USB major number.
  */
@@ -222,7 +212,6 @@ void usb_deregister_dev(struct usb_interface *intf,
 	spin_unlock (&minor_lock);
 
 	snprintf(name, BUS_ID_SIZE, class_driver->name, intf->minor - minor_base);
-	devfs_remove (name);
 	class_device_destroy(usb_class, MKDEV(USB_MAJOR, intf->minor));
 	intf->class_dev = NULL;
 	intf->minor = -1;

drivers/usb/core/hcd-pci.c

@@ -30,6 +30,8 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <linux/usb.h>
+
+#include "usb.h"
 #include "hcd.h"
 
 
@@ -197,6 +199,26 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
 
 	hcd = pci_get_drvdata(dev);
 
+	/* Root hub suspend should have stopped all downstream traffic,
+	 * and all bus master traffic.  And done so for both the interface
+	 * and the stub usb_device (which we check here).  But maybe it
+	 * didn't; writing sysfs power/state files ignores such rules...
+	 *
+	 * We must ignore the FREEZE vs SUSPEND distinction here, because
+	 * otherwise the swsusp will save (and restore) garbage state.
+	 */
+	if (hcd->self.root_hub->dev.power.power_state.event == PM_EVENT_ON)
+		return -EBUSY;
+
+	if (hcd->driver->suspend) {
+		retval = hcd->driver->suspend(hcd, message);
+		if (retval) {
+			dev_dbg (&dev->dev, "PCI pre-suspend fail, %d\n",
+				retval);
+			goto done;
+		}
+	}
+
 	/* FIXME until the generic PM interfaces change a lot more, this
 	 * can't use PCI D1 and D2 states.  For example, the confusion
 	 * between messages and states will need to vanish, and messages
@@ -215,31 +237,13 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
 	 */
 	has_pci_pm = pci_find_capability(dev, PCI_CAP_ID_PM);
 
-	switch (hcd->state) {
-
-	/* entry if root hub wasn't yet suspended ... from sysfs,
-	 * without autosuspend, or if USB_SUSPEND isn't configured.
+	/* Downstream ports from this root hub should already be quiesced, so
+	 * there will be no DMA activity.  Now we can shut down the upstream
+	 * link (except maybe for PME# resume signaling) and enter some PCI
+	 * low power state, if the hardware allows.
 	 */
-	case HC_STATE_RUNNING:
-		hcd->state = HC_STATE_QUIESCING;
-		retval = hcd->driver->suspend (hcd, message);
-		if (retval) {
-			dev_dbg (hcd->self.controller, 
-					"suspend fail, retval %d\n",
-					retval);
-			break;
-		}
-		hcd->state = HC_STATE_SUSPENDED;
-		/* FALLTHROUGH */
+	if (hcd->state == HC_STATE_SUSPENDED) {
 
-	/* entry with CONFIG_USB_SUSPEND, or hcds that autosuspend: the
-	 * controller and/or root hub will already have been suspended,
-	 * but it won't be ready for a PCI resume call.
-	 *
-	 * FIXME only CONFIG_USB_SUSPEND guarantees hub_suspend() will
-	 * have been called, otherwise root hub timers still run ...
-	 */
-	case HC_STATE_SUSPENDED:
 		/* no DMA or IRQs except when HC is active */
 		if (dev->current_state == PCI_D0) {
 			pci_save_state (dev);
@@ -248,7 +252,7 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
 
 		if (!has_pci_pm) {
 			dev_dbg (hcd->self.controller, "--> PCI D0/legacy\n");
-			break;
+			goto done;
 		}
 
 		/* NOTE:  dev->current_state becomes nonzero only here, and
@@ -259,28 +263,29 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
 		retval = pci_set_power_state (dev, PCI_D3hot);
 		if (retval == 0) {
 			dev_dbg (hcd->self.controller, "--> PCI D3\n");
-			retval = pci_enable_wake (dev, PCI_D3hot, hcd->remote_wakeup);
-			if (retval)
-				break;
-			retval = pci_enable_wake (dev, PCI_D3cold, hcd->remote_wakeup);
-		} else if (retval < 0) {
+
+			/* Ignore these return values.  We rely on pci code to
+			 * reject requests the hardware can't implement, rather
+			 * than coding the same thing.
+			 */
+			(void) pci_enable_wake (dev, PCI_D3hot, hcd->remote_wakeup);
+			(void) pci_enable_wake (dev, PCI_D3cold, hcd->remote_wakeup);
+		} else {
 			dev_dbg (&dev->dev, "PCI D3 suspend fail, %d\n",
 					retval);
 			(void) usb_hcd_pci_resume (dev);
-			break;
 		}
-		break;
-	default:
+
+	} else {
 		dev_dbg (hcd->self.controller, "hcd state %d; not suspended\n",
 			hcd->state);
 		WARN_ON(1);
 		retval = -EINVAL;
-		break;
 	}
 
-	/* update power_state **ONLY** to make sysfs happier */
+done:
 	if (retval == 0)
-		dev->dev.power.power_state = message;
+		dev->dev.power.power_state = PMSG_SUSPEND;
 	return retval;
 }
 EXPORT_SYMBOL (usb_hcd_pci_suspend);
@@ -336,20 +341,9 @@ int usb_hcd_pci_resume (struct pci_dev *dev)
 				dev->current_state);
 		}
 #endif
-		retval = pci_enable_wake (dev, dev->current_state, 0);
-		if (retval) {
-			dev_err(hcd->self.controller,
-				"can't enable_wake to %d, %d!\n",
-				dev->current_state, retval);
-			return retval;
-		}
-		retval = pci_enable_wake (dev, PCI_D3cold, 0);
-		if (retval) {
-			dev_err(hcd->self.controller,
-				"can't enable_wake to %d, %d!\n",
-				PCI_D3cold, retval);
-			return retval;
-		}
+		/* yes, ignore these results too... */
+		(void) pci_enable_wake (dev, dev->current_state, 0);
+		(void) pci_enable_wake (dev, PCI_D3cold, 0);
 	} else {
 		/* Same basic cases: clean (powered/not), dirty */
 		dev_dbg(hcd->self.controller, "PCI legacy resume\n");
@@ -371,17 +365,17 @@ int usb_hcd_pci_resume (struct pci_dev *dev)
 
 	dev->dev.power.power_state = PMSG_ON;
 
-	hcd->state = HC_STATE_RESUMING;
 	hcd->saw_irq = 0;
 
-	retval = hcd->driver->resume (hcd);
-	if (!HC_IS_RUNNING (hcd->state)) {
-		dev_dbg (hcd->self.controller, 
-				"resume fail, retval %d\n", retval);
+	if (hcd->driver->resume) {
+		retval = hcd->driver->resume(hcd);
+		if (retval) {
+			dev_err (hcd->self.controller,
+				"PCI post-resume error %d!\n", retval);
 			usb_hc_died (hcd);
 		}
+	}
 
-	retval = pci_enable_device(dev);
 	return retval;
 }
 EXPORT_SYMBOL (usb_hcd_pci_resume);

drivers/usb/core/hcd.c

@@ -130,7 +130,7 @@ static const u8 usb2_rh_dev_descriptor [18] = {
 	0x09,	    /*  __u8  bDeviceClass; HUB_CLASSCODE */
 	0x00,	    /*  __u8  bDeviceSubClass; */
 	0x01,       /*  __u8  bDeviceProtocol; [ usb 2.0 single TT ]*/
-	0x08,       /*  __u8  bMaxPacketSize0; 8 Bytes */
+	0x40,       /*  __u8  bMaxPacketSize0; 64 Bytes */
 
 	0x00, 0x00, /*  __le16 idVendor; */
  	0x00, 0x00, /*  __le16 idProduct; */
@@ -153,7 +153,7 @@ static const u8 usb11_rh_dev_descriptor [18] = {
 	0x09,	    /*  __u8  bDeviceClass; HUB_CLASSCODE */
 	0x00,	    /*  __u8  bDeviceSubClass; */
 	0x00,       /*  __u8  bDeviceProtocol; [ low/full speeds only ] */
-	0x08,       /*  __u8  bMaxPacketSize0; 8 Bytes */
+	0x40,       /*  __u8  bMaxPacketSize0; 64 Bytes */
 
 	0x00, 0x00, /*  __le16 idVendor; */
  	0x00, 0x00, /*  __le16 idProduct; */
@@ -458,9 +458,6 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
 
 	default:
 		/* non-generic request */
-		if (HC_IS_SUSPENDED (hcd->state))
-			status = -EAGAIN;
-		else {
 		switch (typeReq) {
 		case GetHubStatus:
 		case GetPortStatus:
@@ -473,7 +470,6 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
 		status = hcd->driver->hub_control (hcd,
 			typeReq, wValue, wIndex,
 			tbuf, wLength);
-		}
 		break;
 error:
 		/* "protocol stall" on error */
@@ -487,7 +483,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
 				"CTRL: TypeReq=0x%x val=0x%x "
 				"idx=0x%x len=%d ==> %d\n",
 				typeReq, wValue, wIndex,
-				wLength, urb->status);
+				wLength, status);
 		}
 	}
 	if (len) {
@@ -748,10 +744,9 @@ struct usb_bus *usb_alloc_bus (struct usb_operations *op)
 {
 	struct usb_bus *bus;
 
-	bus = kmalloc (sizeof *bus, GFP_KERNEL);
+	bus = kzalloc (sizeof *bus, GFP_KERNEL);
 	if (!bus)
 		return NULL;
-	memset(bus, 0, sizeof(struct usb_bus));
 	usb_bus_init (bus);
 	bus->op = op;
 	return bus;
@@ -796,8 +791,7 @@ static int usb_register_bus(struct usb_bus *bus)
 	list_add (&bus->bus_list, &usb_bus_list);
 	up (&usb_bus_list_lock);
 
-	usbfs_add_bus (bus);
-	usbmon_notify_bus_add (bus);
+	usb_notify_add_bus(bus);
 
 	dev_info (bus->controller, "new USB bus registered, assigned bus number %d\n", bus->busnum);
 	return 0;
@@ -824,8 +818,7 @@ static void usb_deregister_bus (struct usb_bus *bus)
 	list_del (&bus->bus_list);
 	up (&usb_bus_list_lock);
 
-	usbmon_notify_bus_remove (bus);
-	usbfs_remove_bus (bus);
+	usb_notify_remove_bus(bus);
 
 	clear_bit (bus->busnum, busmap.busmap);
 
@@ -1143,10 +1136,20 @@ static int hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
 	else switch (hcd->state) {
 	case HC_STATE_RUNNING:
 	case HC_STATE_RESUMING:
+doit:
 		usb_get_dev (urb->dev);
 		list_add_tail (&urb->urb_list, &ep->urb_list);
 		status = 0;
 		break;
+	case HC_STATE_SUSPENDED:
+		/* HC upstream links (register access, wakeup signaling) can work
+		 * even when the downstream links (and DMA etc) are quiesced; let
+		 * usbcore talk to the root hub.
+		 */
+		if (hcd->self.controller->power.power_state.event == PM_EVENT_ON
+				&& urb->dev->parent == NULL)
+			goto doit;
+		/* FALL THROUGH */
 	default:
 		status = -ESHUTDOWN;
 		break;
@@ -1294,12 +1297,6 @@ static int hcd_unlink_urb (struct urb *urb, int status)
 		goto done;
 	}
 
-	/* running ~= hc unlink handshake works (irq, timer, etc)
-	 * halted ~= no unlink handshake is needed
-	 * suspended, resuming == should never happen
-	 */
-	WARN_ON (!HC_IS_RUNNING (hcd->state) && hcd->state != HC_STATE_HALT);
-
 	/* insist the urb is still queued */
 	list_for_each(tmp, &ep->urb_list) {
 		if (tmp == &urb->urb_list)
@@ -1431,28 +1428,92 @@ hcd_endpoint_disable (struct usb_device *udev, struct usb_host_endpoint *ep)
 
 /*-------------------------------------------------------------------------*/
 
-#ifdef	CONFIG_USB_SUSPEND
+#ifdef	CONFIG_PM
 
-static int hcd_hub_suspend (struct usb_bus *bus)
+int hcd_bus_suspend (struct usb_bus *bus)
 {
 	struct usb_hcd		*hcd;
+	int			status;
 
 	hcd = container_of (bus, struct usb_hcd, self);
-	if (hcd->driver->hub_suspend)
-		return hcd->driver->hub_suspend (hcd);
-	return 0;
+	if (!hcd->driver->bus_suspend)
+		return -ENOENT;
+	hcd->state = HC_STATE_QUIESCING;
+	status = hcd->driver->bus_suspend (hcd);
+	if (status == 0)
+		hcd->state = HC_STATE_SUSPENDED;
+	else
+		dev_dbg(&bus->root_hub->dev, "%s fail, err %d\n",
+				"suspend", status);
+	return status;
 }
 
-static int hcd_hub_resume (struct usb_bus *bus)
+int hcd_bus_resume (struct usb_bus *bus)
 {
 	struct usb_hcd		*hcd;
+	int			status;
 
 	hcd = container_of (bus, struct usb_hcd, self);
-	if (hcd->driver->hub_resume)
-		return hcd->driver->hub_resume (hcd);
+	if (!hcd->driver->bus_resume)
+		return -ENOENT;
+	if (hcd->state == HC_STATE_RUNNING)
 		return 0;
+	hcd->state = HC_STATE_RESUMING;
+	status = hcd->driver->bus_resume (hcd);
+	if (status == 0)
+		hcd->state = HC_STATE_RUNNING;
+	else {
+		dev_dbg(&bus->root_hub->dev, "%s fail, err %d\n",
+				"resume", status);
+		usb_hc_died(hcd);
+	}
+	return status;
 }
 
+/*
+ * usb_hcd_suspend_root_hub - HCD autosuspends downstream ports
+ * @hcd: host controller for this root hub
+ *
+ * This call arranges that usb_hcd_resume_root_hub() is safe to call later;
+ * that the HCD's root hub polling is deactivated; and that the root's hub
+ * driver is suspended.  HCDs may call this to autosuspend when their root
+ * hub's downstream ports are all inactive:  unpowered, disconnected,
+ * disabled, or suspended.
+ *
+ * The HCD will autoresume on device connect change detection (using SRP
+ * or a D+/D- pullup).  The HCD also autoresumes on remote wakeup signaling
+ * from any ports that are suspended (if that is enabled).  In most cases,
+ * overcurrent signaling (on powered ports) will also start autoresume.
+ *
+ * Always called with IRQs blocked.
+ */
+void usb_hcd_suspend_root_hub (struct usb_hcd *hcd)
+{
+	struct urb	*urb;
+
+	spin_lock (&hcd_root_hub_lock);
+	usb_suspend_root_hub (hcd->self.root_hub);
+
+	/* force status urb to complete/unlink while suspended */
+	if (hcd->status_urb) {
+		urb = hcd->status_urb;
+		urb->status = -ECONNRESET;
+		urb->hcpriv = NULL;
+		urb->actual_length = 0;
+
+		del_timer (&hcd->rh_timer);
+		hcd->poll_pending = 0;
+		hcd->status_urb = NULL;
+	} else
+		urb = NULL;
+	spin_unlock (&hcd_root_hub_lock);
+	hcd->state = HC_STATE_SUSPENDED;
+
+	if (urb)
+		usb_hcd_giveback_urb (hcd, urb, NULL);
+}
+EXPORT_SYMBOL_GPL(usb_hcd_suspend_root_hub);
+
 /**
  * usb_hcd_resume_root_hub - called by HCD to resume its root hub 
  * @hcd: host controller for this root hub
@@ -1460,7 +1521,7 @@ static int hcd_hub_resume (struct usb_bus *bus)
  * The USB host controller calls this function when its root hub is
  * suspended (with the remote wakeup feature enabled) and a remote
  * wakeup request is received.  It queues a request for khubd to
- * resume the root hub.
+ * resume the root hub (that is, manage its downstream ports again).
  */
 void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
 {
@@ -1471,13 +1532,9 @@ void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
 		usb_resume_root_hub (hcd->self.root_hub);
 	spin_unlock_irqrestore (&hcd_root_hub_lock, flags);
 }
+EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
 
-#else
-void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
-{
-}
 #endif
-EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
 
 /*-------------------------------------------------------------------------*/
 
@@ -1530,10 +1587,6 @@ static struct usb_operations usb_hcd_operations = {
 	.buffer_alloc =		hcd_buffer_alloc,
 	.buffer_free =		hcd_buffer_free,
 	.disable =		hcd_endpoint_disable,
-#ifdef	CONFIG_USB_SUSPEND
-	.hub_suspend =		hcd_hub_suspend,
-	.hub_resume =		hcd_hub_resume,
-#endif
 };
 
 /*-------------------------------------------------------------------------*/

drivers/usb/core/hcd.h

@@ -154,10 +154,6 @@ struct usb_operations {
 
 	void (*disable)(struct usb_device *udev,
 			struct usb_host_endpoint *ep);
-
-	/* global suspend/resume of bus */
-	int (*hub_suspend)(struct usb_bus *);
-	int (*hub_resume)(struct usb_bus *);
 };
 
 /* each driver provides one of these, and hardware init support */
@@ -182,12 +178,12 @@ struct hc_driver {
 	int	(*start) (struct usb_hcd *hcd);
 
 	/* NOTE:  these suspend/resume calls relate to the HC as
-	 * a whole, not just the root hub; they're for bus glue.
+	 * a whole, not just the root hub; they're for PCI bus glue.
 	 */
-	/* called after all devices were suspended */
+	/* called after suspending the hub, before entering D3 etc */
 	int	(*suspend) (struct usb_hcd *hcd, pm_message_t message);
 
-	/* called before any devices get resumed */
+	/* called after entering D0 (etc), before resuming the hub */
 	int	(*resume) (struct usb_hcd *hcd);
 
 	/* cleanly make HCD stop writing memory and doing I/O */
@@ -212,8 +208,8 @@ struct hc_driver {
 	int		(*hub_control) (struct usb_hcd *hcd,
 				u16 typeReq, u16 wValue, u16 wIndex,
 				char *buf, u16 wLength);
-	int		(*hub_suspend)(struct usb_hcd *);
-	int		(*hub_resume)(struct usb_hcd *);
+	int		(*bus_suspend)(struct usb_hcd *);
+	int		(*bus_resume)(struct usb_hcd *);
 	int		(*start_port_reset)(struct usb_hcd *, unsigned port_num);
 	void		(*hub_irq_enable)(struct usb_hcd *);
 		/* Needed only if port-change IRQs are level-triggered */
@@ -355,8 +351,6 @@ extern long usb_calc_bus_time (int speed, int is_input,
 
 extern struct usb_bus *usb_alloc_bus (struct usb_operations *);
 
-extern void usb_hcd_resume_root_hub (struct usb_hcd *hcd);
-
 extern void usb_set_device_state(struct usb_device *udev,
 		enum usb_device_state new_state);
 
@@ -378,6 +372,33 @@ extern int usb_find_interface_driver (struct usb_device *dev,
 
 #define usb_endpoint_out(ep_dir)	(!((ep_dir) & USB_DIR_IN))
 
+#ifdef CONFIG_PM
+extern void usb_hcd_suspend_root_hub (struct usb_hcd *hcd);
+extern void usb_hcd_resume_root_hub (struct usb_hcd *hcd);
+extern int hcd_bus_suspend (struct usb_bus *bus);
+extern int hcd_bus_resume (struct usb_bus *bus);
+#else
+static inline void usb_hcd_suspend_root_hub(struct usb_hcd *hcd)
+{
+	return;
+}
+
+static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
+{
+	return;
+}
+
+static inline int hcd_bus_suspend(struct usb_bus *bus)
+{
+	return 0;
+}
+
+static inline int hcd_bus_resume (struct usb_bus *bus)
+{
+	return 0;
+}
+#endif /* CONFIG_PM */
+
 /*
  * USB device fs stuff
  */
@@ -388,23 +409,13 @@ extern int usb_find_interface_driver (struct usb_device *dev,
  * these are expected to be called from the USB core/hub thread
  * with the kernel lock held
  */
-extern void usbfs_add_bus(struct usb_bus *bus);
-extern void usbfs_remove_bus(struct usb_bus *bus);
-extern void usbfs_add_device(struct usb_device *dev);
-extern void usbfs_remove_device(struct usb_device *dev);
 extern void usbfs_update_special (void);
-
 extern int usbfs_init(void);
 extern void usbfs_cleanup(void);
 
 #else /* CONFIG_USB_DEVICEFS */
 
-static inline void usbfs_add_bus(struct usb_bus *bus) {}
-static inline void usbfs_remove_bus(struct usb_bus *bus) {}
-static inline void usbfs_add_device(struct usb_device *dev) {}
-static inline void usbfs_remove_device(struct usb_device *dev) {}
 static inline void usbfs_update_special (void) {}
-
 static inline int usbfs_init(void) { return 0; }
 static inline void usbfs_cleanup(void) { }
 
@@ -419,8 +430,6 @@ struct usb_mon_operations {
 	void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err);
 	void (*urb_complete)(struct usb_bus *bus, struct urb *urb);
 	/* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */
-	void (*bus_add)(struct usb_bus *bus);
-	void (*bus_remove)(struct usb_bus *bus);
 };
 
 extern struct usb_mon_operations *mon_ops;
@@ -444,18 +453,6 @@ static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb)
 		(*mon_ops->urb_complete)(bus, urb);
 }
 
-static inline void usbmon_notify_bus_add(struct usb_bus *bus)
-{
-	if (mon_ops)
-		(*mon_ops->bus_add)(bus);
-}
-
-static inline void usbmon_notify_bus_remove(struct usb_bus *bus)
-{
-	if (mon_ops)
-		(*mon_ops->bus_remove)(bus);
-}
-
 int usb_mon_register(struct usb_mon_operations *ops);
 void usb_mon_deregister(void);
 
@@ -465,8 +462,6 @@ static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {}
 static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
     int error) {}
 static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb) {}
-static inline void usbmon_notify_bus_add(struct usb_bus *bus) {}
-static inline void usbmon_notify_bus_remove(struct usb_bus *bus) {}
 
 #endif /* CONFIG_USB_MON */
 

drivers/usb/core/hub.h

@@ -131,7 +131,7 @@ struct usb_hub_descriptor {
 	__u8  bDescLength;
 	__u8  bDescriptorType;
 	__u8  bNbrPorts;
-	__u16 wHubCharacteristics;
+	__le16 wHubCharacteristics;
 	__u8  bPwrOn2PwrGood;
 	__u8  bHubContrCurrent;
 	    	/* add 1 bit for hub status change; round to bytes */

drivers/usb/core/inode.c

@@ -39,6 +39,7 @@
 #include <linux/usbdevice_fs.h>
 #include <linux/smp_lock.h>
 #include <linux/parser.h>
+#include <linux/notifier.h>
 #include <asm/byteorder.h>
 #include "usb.h"
 #include "hcd.h"
@@ -619,7 +620,7 @@ void usbfs_update_special (void)
 	}
 }
 
-void usbfs_add_bus(struct usb_bus *bus)
+static void usbfs_add_bus(struct usb_bus *bus)
 {
 	struct dentry *parent;
 	char name[8];
@@ -642,12 +643,9 @@ void usbfs_add_bus(struct usb_bus *bus)
 		err ("error creating usbfs bus entry");
 		return;
 	}
-
-	usbfs_update_special();
-	usbfs_conn_disc_event();
 }
 
-void usbfs_remove_bus(struct usb_bus *bus)
+static void usbfs_remove_bus(struct usb_bus *bus)
 {
 	if (bus->usbfs_dentry) {
 		fs_remove_file (bus->usbfs_dentry);
@@ -659,12 +657,9 @@ void usbfs_remove_bus(struct usb_bus *bus)
 		remove_special_files();
 		num_buses = 0;
 	}
-
-	usbfs_update_special();
-	usbfs_conn_disc_event();
 }
 
-void usbfs_add_device(struct usb_device *dev)
+static void usbfs_add_device(struct usb_device *dev)
 {
 	char name[8];
 	int i;
@@ -690,12 +685,9 @@ void usbfs_add_device(struct usb_device *dev)
 	}
 	if (dev->usbfs_dentry->d_inode)
 		dev->usbfs_dentry->d_inode->i_size = i_size;
-
-	usbfs_update_special();
-	usbfs_conn_disc_event();
 }
 
-void usbfs_remove_device(struct usb_device *dev)
+static void usbfs_remove_device(struct usb_device *dev)
 {
 	struct dev_state *ds;
 	struct siginfo sinfo;
@@ -716,10 +708,33 @@ void usbfs_remove_device(struct usb_device *dev)
 			kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid);
 		}
 	}
+}
+
+static int usbfs_notify(struct notifier_block *self, unsigned long action, void *dev)
+{
+	switch (action) {
+	case USB_DEVICE_ADD:
+		usbfs_add_device(dev);
+		break;
+	case USB_DEVICE_REMOVE:
+		usbfs_remove_device(dev);
+		break;
+	case USB_BUS_ADD:
+		usbfs_add_bus(dev);
+		break;
+	case USB_BUS_REMOVE:
+		usbfs_remove_bus(dev);
+	}
+
 	usbfs_update_special();
 	usbfs_conn_disc_event();
+	return NOTIFY_OK;
 }
 
+static struct notifier_block usbfs_nb = {
+	.notifier_call = 	usbfs_notify,
+};
+
 /* --------------------------------------------------------------------- */
 
 static struct proc_dir_entry *usbdir = NULL;
@@ -732,6 +747,8 @@ int __init usbfs_init(void)
 	if (retval)
 		return retval;
 
+	usb_register_notify(&usbfs_nb);
+
 	/* create mount point for usbfs */
 	usbdir = proc_mkdir("usb", proc_bus);
 
@@ -740,6 +757,7 @@ int __init usbfs_init(void)
 
 void usbfs_cleanup(void)
 {
+	usb_unregister_notify(&usbfs_nb);
 	unregister_filesystem(&usb_fs_type);
 	if (usbdir)
 		remove_proc_entry("usb", proc_bus);

drivers/usb/core/message.c

@@ -187,19 +187,35 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u
  *      If a thread in your driver uses this call, make sure your disconnect()
  *      method can wait for it to complete.  Since you don't have a handle on
  *      the URB used, you can't cancel the request.
+ *
+ *	Because there is no usb_interrupt_msg() and no USBDEVFS_INTERRUPT
+ *	ioctl, users are forced to abuse this routine by using it to submit
+ *	URBs for interrupt endpoints.  We will take the liberty of creating
+ *	an interrupt URB (with the default interval) if the target is an
+ *	interrupt endpoint.
  */
 int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe, 
 			void *data, int len, int *actual_length, int timeout)
 {
 	struct urb *urb;
+	struct usb_host_endpoint *ep;
 
-	if (len < 0)
+	ep = (usb_pipein(pipe) ? usb_dev->ep_in : usb_dev->ep_out)
+			[usb_pipeendpoint(pipe)];
+	if (!ep || len < 0)
 		return -EINVAL;
 
-	urb=usb_alloc_urb(0, GFP_KERNEL);
+	urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!urb)
 		return -ENOMEM;
 
+	if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
+			USB_ENDPOINT_XFER_INT) {
+		pipe = (pipe & ~(3 << 30)) | (PIPE_INTERRUPT << 30);
+		usb_fill_int_urb(urb, usb_dev, pipe, data, len,
+				usb_api_blocking_completion, NULL,
+				ep->desc.bInterval);
+	} else
 		usb_fill_bulk_urb(urb, usb_dev, pipe, data, len,
 				usb_api_blocking_completion, NULL);
 
@@ -771,6 +787,31 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
 	return err;
 }
 
+/**
+ * usb_cache_string - read a string descriptor and cache it for later use
+ * @udev: the device whose string descriptor is being read
+ * @index: the descriptor index
+ *
+ * Returns a pointer to a kmalloc'ed buffer containing the descriptor string,
+ * or NULL if the index is 0 or the string could not be read.
+ */
+char *usb_cache_string(struct usb_device *udev, int index)
+{
+	char *buf;
+	char *smallbuf = NULL;
+	int len;
+
+	if (index > 0 && (buf = kmalloc(256, GFP_KERNEL)) != NULL) {
+		if ((len = usb_string(udev, index, buf, 256)) > 0) {
+			if ((smallbuf = kmalloc(++len, GFP_KERNEL)) == NULL)
+				return buf;
+			memcpy(smallbuf, buf, len);
+		}
+		kfree(buf);
+	}
+	return smallbuf;
+}
+
 /*
  * usb_get_device_descriptor - (re)reads the device descriptor (usbcore)
  * @dev: the device whose device descriptor is being updated
@@ -992,8 +1033,6 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0)
 			dev_dbg (&dev->dev, "unregistering interface %s\n",
 				interface->dev.bus_id);
 			usb_remove_sysfs_intf_files(interface);
-			kfree(interface->cur_altsetting->string);
-			interface->cur_altsetting->string = NULL;
 			device_del (&interface->dev);
 		}
 
@@ -1133,6 +1172,8 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
 	 */
 
 	/* prevent submissions using previous endpoint settings */
+	if (device_is_registered(&iface->dev))
+		usb_remove_sysfs_intf_files(iface);
 	usb_disable_interface(dev, iface);
 
 	iface->cur_altsetting = alt;
@@ -1168,6 +1209,8 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
 	 * (Likewise, EP0 never "halts" on well designed devices.)
 	 */
 	usb_enable_interface(dev, iface);
+	if (device_is_registered(&iface->dev))
+		usb_create_sysfs_intf_files(iface);
 
 	return 0;
 }
@@ -1217,10 +1260,8 @@ int usb_reset_configuration(struct usb_device *dev)
 			USB_REQ_SET_CONFIGURATION, 0,
 			config->desc.bConfigurationValue, 0,
 			NULL, 0, USB_CTRL_SET_TIMEOUT);
-	if (retval < 0) {
-		usb_set_device_state(dev, USB_STATE_ADDRESS);
+	if (retval < 0)
 		return retval;
-	}
 
 	dev->toggle[0] = dev->toggle[1] = 0;
 
@@ -1229,6 +1270,8 @@ int usb_reset_configuration(struct usb_device *dev)
 		struct usb_interface *intf = config->interface[i];
 		struct usb_host_interface *alt;
 
+		if (device_is_registered(&intf->dev))
+			usb_remove_sysfs_intf_files(intf);
 		alt = usb_altnum_to_altsetting(intf, 0);
 
 		/* No altsetting 0?  We'll assume the first altsetting.
@@ -1241,6 +1284,8 @@ int usb_reset_configuration(struct usb_device *dev)
 
 		intf->cur_altsetting = alt;
 		usb_enable_interface(dev, intf);
+		if (device_is_registered(&intf->dev))
+			usb_create_sysfs_intf_files(intf);
 	}
 	return 0;
 }
@@ -1328,7 +1373,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 		}
 
 		for (; n < nintf; ++n) {
-			new_interfaces[n] = kmalloc(
+			new_interfaces[n] = kzalloc(
 					sizeof(struct usb_interface),
 					GFP_KERNEL);
 			if (!new_interfaces[n]) {
@@ -1369,7 +1414,6 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 			struct usb_host_interface *alt;
 
 			cp->interface[i] = intf = new_interfaces[i];
-			memset(intf, 0, sizeof(*intf));
 			intfc = cp->intf_cache[i];
 			intf->altsetting = intfc->altsetting;
 			intf->num_altsetting = intfc->num_altsetting;
@@ -1393,6 +1437,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 			intf->dev.dma_mask = dev->dev.dma_mask;
 			intf->dev.release = release_interface;
 			device_initialize (&intf->dev);
+			mark_quiesced(intf);
 			sprintf (&intf->dev.bus_id[0], "%d-%s:%d.%d",
 				 dev->bus->busnum, dev->devpath,
 				 configuration,
@@ -1400,12 +1445,9 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 		}
 		kfree(new_interfaces);
 
-		if ((cp->desc.iConfiguration) &&
-		    (cp->string == NULL)) {
-			cp->string = kmalloc(256, GFP_KERNEL);
-			if (cp->string)
-				usb_string(dev, cp->desc.iConfiguration, cp->string, 256);
-		}
+		if (cp->string == NULL)
+			cp->string = usb_cache_string(dev,
+					cp->desc.iConfiguration);
 
 		/* Now that all the interfaces are set up, register them
 		 * to trigger binding of drivers to interfaces.  probe()
@@ -1415,13 +1457,12 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 		 */
 		for (i = 0; i < nintf; ++i) {
 			struct usb_interface *intf = cp->interface[i];
-			struct usb_interface_descriptor *desc;
+			struct usb_host_interface *alt = intf->cur_altsetting;
 
-			desc = &intf->altsetting [0].desc;
 			dev_dbg (&dev->dev,
 				"adding %s (config #%d, interface %d)\n",
 				intf->dev.bus_id, configuration,
-				desc->bInterfaceNumber);
+				alt->desc.bInterfaceNumber);
 			ret = device_add (&intf->dev);
 			if (ret != 0) {
 				dev_err(&dev->dev,
@@ -1430,13 +1471,6 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 					ret);
 				continue;
 			}
-			if ((intf->cur_altsetting->desc.iInterface) &&
-			    (intf->cur_altsetting->string == NULL)) {
-				intf->cur_altsetting->string = kmalloc(256, GFP_KERNEL);
-				if (intf->cur_altsetting->string)
-					usb_string(dev, intf->cur_altsetting->desc.iInterface,
-						   intf->cur_altsetting->string, 256);
-			}
 			usb_create_sysfs_intf_files (intf);
 		}
 	}

drivers/usb/core/notify.c

+/*
+ * All the USB notify logic
+ *
+ * (C) Copyright 2005 Greg Kroah-Hartman <gregkh@suse.de>
+ *
+ * notifier functions originally based on those in kernel/sys.c
+ * but fixed up to not be so broken.
+ *
+ */
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/notifier.h>
+#ifdef CONFIG_USB_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+#include <linux/usb.h>
+
+#include "usb.h"
+
+
+static struct notifier_block *usb_notifier_list;
+static DECLARE_MUTEX(usb_notifier_lock);
+
+static void usb_notifier_chain_register(struct notifier_block **list,
+					struct notifier_block *n)
+{
+	down(&usb_notifier_lock);
+	while (*list) {
+		if (n->priority > (*list)->priority)
+			break;
+		list = &((*list)->next);
+	}
+	n->next = *list;
+	*list = n;
+	up(&usb_notifier_lock);
+}
+
+static void usb_notifier_chain_unregister(struct notifier_block **nl,
+				   struct notifier_block *n)
+{
+	down(&usb_notifier_lock);
+	while ((*nl)!=NULL) {
+		if ((*nl)==n) {
+			*nl = n->next;
+			goto exit;
+		}
+		nl=&((*nl)->next);
+	}
+exit:
+	up(&usb_notifier_lock);
+}
+
+static int usb_notifier_call_chain(struct notifier_block **n,
+				   unsigned long val, void *v)
+{
+	int ret=NOTIFY_DONE;
+	struct notifier_block *nb = *n;
+
+	down(&usb_notifier_lock);
+	while (nb) {
+		ret = nb->notifier_call(nb,val,v);
+		if (ret&NOTIFY_STOP_MASK) {
+			goto exit;
+		}
+		nb = nb->next;
+	}
+exit:
+	up(&usb_notifier_lock);
+	return ret;
+}
+
+/**
+ * usb_register_notify - register a notifier callback whenever a usb change happens
+ * @nb: pointer to the notifier block for the callback events.
+ *
+ * These changes are either USB devices or busses being added or removed.
+ */
+void usb_register_notify(struct notifier_block *nb)
+{
+	usb_notifier_chain_register(&usb_notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(usb_register_notify);
+
+/**
+ * usb_unregister_notify - unregister a notifier callback
+ * @nb: pointer to the notifier block for the callback events.
+ *
+ * usb_register_notifier() must have been previously called for this function
+ * to work properly.
+ */
+void usb_unregister_notify(struct notifier_block *nb)
+{
+	usb_notifier_chain_unregister(&usb_notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(usb_unregister_notify);
+
+
+void usb_notify_add_device(struct usb_device *udev)
+{
+	usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev);
+}
+
+void usb_notify_remove_device(struct usb_device *udev)
+{
+	usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_REMOVE, udev);
+}
+
+void usb_notify_add_bus(struct usb_bus *ubus)
+{
+	usb_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus);
+}
+
+void usb_notify_remove_bus(struct usb_bus *ubus)
+{
+	usb_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus);
+}

drivers/usb/core/urb.c

@@ -237,7 +237,8 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 	    (dev->state < USB_STATE_DEFAULT) ||
 	    (!dev->bus) || (dev->devnum <= 0))
 		return -ENODEV;
-	if (dev->state == USB_STATE_SUSPENDED)
+	if (dev->bus->controller->power.power_state.event != PM_EVENT_ON
+			|| dev->state == USB_STATE_SUSPENDED)
 		return -EHOSTUNREACH;
 	if (!(op = dev->bus->op) || !op->submit_urb)
 		return -ENODEV;

drivers/usb/core/usb.c

@@ -107,10 +107,19 @@ static int usb_probe_interface(struct device *dev)
 	id = usb_match_id (intf, driver->id_table);
 	if (id) {
 		dev_dbg (dev, "%s - got id\n", __FUNCTION__);
+
+		/* Interface "power state" doesn't correspond to any hardware
+		 * state whatsoever.  We use it to record when it's bound to
+		 * a driver that may start I/0:  it's not frozen/quiesced.
+		 */
+		mark_active(intf);
 		intf->condition = USB_INTERFACE_BINDING;
 		error = driver->probe (intf, id);
-		intf->condition = error ? USB_INTERFACE_UNBOUND :
-				USB_INTERFACE_BOUND;
+		if (error) {
+			mark_quiesced(intf);
+			intf->condition = USB_INTERFACE_UNBOUND;
+		} else
+			intf->condition = USB_INTERFACE_BOUND;
 	}
 
 	return error;
@@ -136,6 +145,7 @@ static int usb_unbind_interface(struct device *dev)
 			0);
 	usb_set_intfdata(intf, NULL);
 	intf->condition = USB_INTERFACE_UNBOUND;
+	mark_quiesced(intf);
 
 	return 0;
 }
@@ -299,6 +309,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
 	dev->driver = &driver->driver;
 	usb_set_intfdata(iface, priv);
 	iface->condition = USB_INTERFACE_BOUND;
+	mark_active(iface);
 
 	/* if interface was already added, bind now; else let
 	 * the future device_add() bind it, bypassing probe()
@@ -345,6 +356,7 @@ void usb_driver_release_interface(struct usb_driver *driver,
 	dev->driver = NULL;
 	usb_set_intfdata(iface, NULL);
 	iface->condition = USB_INTERFACE_UNBOUND;
+	mark_quiesced(iface);
 }
 
 /**
@@ -557,6 +569,7 @@ static int usb_hotplug (struct device *dev, char **envp, int num_envp,
 {
 	struct usb_interface *intf;
 	struct usb_device *usb_dev;
+	struct usb_host_interface *alt;
 	int i = 0;
 	int length = 0;
 
@@ -573,6 +586,7 @@ static int usb_hotplug (struct device *dev, char **envp, int num_envp,
 
 	intf = to_usb_interface(dev);
 	usb_dev = interface_to_usbdev (intf);
+	alt = intf->cur_altsetting;
 
 	if (usb_dev->devnum < 0) {
 		pr_debug ("usb %s: already deleted?\n", dev->bus_id);
@@ -615,13 +629,6 @@ static int usb_hotplug (struct device *dev, char **envp, int num_envp,
 				usb_dev->descriptor.bDeviceProtocol))
 		return -ENOMEM;
 
-	if (usb_dev->descriptor.bDeviceClass == 0) {
-		struct usb_host_interface *alt = intf->cur_altsetting;
-
-		/* 2.4 only exposed interface zero.  in 2.5, hotplug
-		 * agents are called for all interfaces, and can use
-		 * $DEVPATH/bInterfaceNumber if necessary.
-		 */
 	if (add_hotplug_env_var(envp, num_envp, &i,
 				buffer, buffer_size, &length,
 				"INTERFACE=%d/%d/%d",
@@ -643,18 +650,6 @@ static int usb_hotplug (struct device *dev, char **envp, int num_envp,
 				alt->desc.bInterfaceSubClass,
 				alt->desc.bInterfaceProtocol))
 		return -ENOMEM;
- 	} else {
-		if (add_hotplug_env_var(envp, num_envp, &i,
-					buffer, buffer_size, &length,
-					"MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic*isc*ip*",
-					le16_to_cpu(usb_dev->descriptor.idVendor),
-					le16_to_cpu(usb_dev->descriptor.idProduct),
-					le16_to_cpu(usb_dev->descriptor.bcdDevice),
-					usb_dev->descriptor.bDeviceClass,
-					usb_dev->descriptor.bDeviceSubClass,
-					usb_dev->descriptor.bDeviceProtocol))
-			return -ENOMEM;
-	}
 
 	envp[i] = NULL;
 
@@ -709,12 +704,10 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1)
 {
 	struct usb_device *dev;
 
-	dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev)
 		return NULL;
 
-	memset(dev, 0, sizeof(*dev));
-
 	bus = usb_bus_get(bus);
 	if (!bus) {
 		kfree(dev);
@@ -1402,13 +1395,30 @@ void usb_buffer_unmap_sg (struct usb_device *dev, unsigned pipe,
 			usb_pipein (pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
 }
 
+static int verify_suspended(struct device *dev, void *unused)
+{
+	return (dev->power.power_state.event == PM_EVENT_ON) ? -EBUSY : 0;
+}
+
 static int usb_generic_suspend(struct device *dev, pm_message_t message)
 {
 	struct usb_interface	*intf;
 	struct usb_driver	*driver;
+	int			status;
 
-	if (dev->driver == &usb_generic_driver)
-		return usb_suspend_device (to_usb_device(dev), message);
+	/* USB devices enter SUSPEND state through their hubs, but can be
+	 * marked for FREEZE as soon as their children are already idled.
+	 * But those semantics are useless, so we equate the two (sigh).
+	 */
+	if (dev->driver == &usb_generic_driver) {
+		if (dev->power.power_state.event == message.event)
+			return 0;
+		/* we need to rule out bogus requests through sysfs */
+		status = device_for_each_child(dev, NULL, verify_suspended);
+		if (status)
+			return status;
+ 		return usb_suspend_device (to_usb_device(dev));
+	}
 
 	if ((dev->driver == NULL) ||
 	    (dev->driver_data == &usb_generic_driver_data))
@@ -1417,23 +1427,44 @@ static int usb_generic_suspend(struct device *dev, pm_message_t message)
 	intf = to_usb_interface(dev);
 	driver = to_usb_driver(dev->driver);
 
-	/* there's only one USB suspend state */
-	if (intf->dev.power.power_state.event)
+	/* with no hardware, USB interfaces only use FREEZE and ON states */
+	if (!is_active(intf))
 		return 0;
 
-	if (driver->suspend)
-		return driver->suspend(intf, message);
-	return 0;
+	if (driver->suspend && driver->resume) {
+		status = driver->suspend(intf, message);
+		if (status)
+			dev_err(dev, "%s error %d\n", "suspend", status);
+		else
+			mark_quiesced(intf);
+	} else {
+		// FIXME else if there's no suspend method, disconnect...
+		dev_warn(dev, "no %s?\n", "suspend");
+		status = 0;
+	}
+	return status;
 }
 
 static int usb_generic_resume(struct device *dev)
 {
 	struct usb_interface	*intf;
 	struct usb_driver	*driver;
+	struct usb_device	*udev;
+	int			status;
 
-	/* devices resume through their hub */
-	if (dev->driver == &usb_generic_driver)
+	if (dev->power.power_state.event == PM_EVENT_ON)
+		return 0;
+
+	/* mark things as "on" immediately, no matter what errors crop up */
+	dev->power.power_state.event = PM_EVENT_ON;
+
+	/* devices resume through their hubs */
+	if (dev->driver == &usb_generic_driver) {
+		udev = to_usb_device(dev);
+		if (udev->state == USB_STATE_NOTATTACHED)
+			return 0;
 		return usb_resume_device (to_usb_device(dev));
+	}
 
 	if ((dev->driver == NULL) ||
 	    (dev->driver_data == &usb_generic_driver_data))
@@ -1442,8 +1473,22 @@ static int usb_generic_resume(struct device *dev)
 	intf = to_usb_interface(dev);
 	driver = to_usb_driver(dev->driver);
 
-	if (driver->resume)
-		return driver->resume(intf);
+	udev = interface_to_usbdev(intf);
+	if (udev->state == USB_STATE_NOTATTACHED)
+		return 0;
+
+	/* if driver was suspended, it has a resume method;
+	 * however, sysfs can wrongly mark things as suspended
+	 * (on the "no suspend method" FIXME path above)
+	 */
+	if (driver->resume) {
+		status = driver->resume(intf);
+		if (status) {
+			dev_err(dev, "%s error %d\n", "resume", status);
+			mark_quiesced(intf);
+		}
+	} else
+		dev_warn(dev, "no %s?\n", "resume");
 	return 0;
 }
 

drivers/usb/core/usb.h

@@ -13,12 +13,14 @@ extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
 
 extern int usb_get_device_descriptor(struct usb_device *dev,
 		unsigned int size);
+extern char *usb_cache_string(struct usb_device *udev, int index);
 extern int usb_set_configuration(struct usb_device *dev, int configuration);
 
 extern void usb_lock_all_devices(void);
 extern void usb_unlock_all_devices(void);
 
 extern void usb_kick_khubd(struct usb_device *dev);
+extern void usb_suspend_root_hub(struct usb_device *hdev);
 extern void usb_resume_root_hub(struct usb_device *dev);
 
 extern int  usb_hub_init(void);
@@ -28,6 +30,28 @@ extern void usb_major_cleanup(void);
 extern int usb_host_init(void);
 extern void usb_host_cleanup(void);
 
+extern int usb_suspend_device(struct usb_device *dev);
+extern int usb_resume_device(struct usb_device *dev);
+
+
+/* Interfaces and their "power state" are owned by usbcore */
+
+static inline void mark_active(struct usb_interface *f)
+{
+	f->dev.power.power_state.event = PM_EVENT_ON;
+}
+
+static inline void mark_quiesced(struct usb_interface *f)
+{
+	f->dev.power.power_state.event = PM_EVENT_FREEZE;
+}
+
+static inline int is_active(struct usb_interface *f)
+{
+	return f->dev.power.power_state.event == PM_EVENT_ON;
+}
+
+
 /* for labeling diagnostics */
 extern const char *usbcore_name;
 
@@ -39,9 +63,6 @@ extern void usbfs_conn_disc_event(void);
 
 extern int usbdev_init(void);
 extern void usbdev_cleanup(void);
-extern void usbdev_add(struct usb_device *dev);
-extern void usbdev_remove(struct usb_device *dev);
-extern struct usb_device *usbdev_lookup_minor(int minor);
 
 struct dev_state {
 	struct list_head list;      /* state list */
@@ -58,3 +79,9 @@ struct dev_state {
 	unsigned long ifclaimed;
 };
 
+/* internal notify stuff */
+extern void usb_notify_add_device(struct usb_device *udev);
+extern void usb_notify_remove_device(struct usb_device *udev);
+extern void usb_notify_add_bus(struct usb_bus *ubus);
+extern void usb_notify_remove_bus(struct usb_bus *ubus);
+

drivers/usb/gadget/dummy_hcd.c

@@ -967,6 +967,7 @@ static int dummy_udc_resume (struct device *dev)
 
 static struct device_driver dummy_udc_driver = {
 	.name		= (char *) gadget_name,
+	.owner		= THIS_MODULE,
 	.bus		= &platform_bus_type,
 	.probe		= dummy_udc_probe,
 	.remove		= dummy_udc_remove,
@@ -1751,7 +1752,7 @@ static int dummy_hub_control (
 	return retval;
 }
 
-static int dummy_hub_suspend (struct usb_hcd *hcd)
+static int dummy_bus_suspend (struct usb_hcd *hcd)
 {
 	struct dummy *dum = hcd_to_dummy (hcd);
 
@@ -1762,7 +1763,7 @@ static int dummy_hub_suspend (struct usb_hcd *hcd)
 	return 0;
 }
 
-static int dummy_hub_resume (struct usb_hcd *hcd)
+static int dummy_bus_resume (struct usb_hcd *hcd)
 {
 	struct dummy *dum = hcd_to_dummy (hcd);
 
@@ -1894,8 +1895,8 @@ static const struct hc_driver dummy_hcd = {
 
 	.hub_status_data = 	dummy_hub_status,
 	.hub_control = 		dummy_hub_control,
-	.hub_suspend =		dummy_hub_suspend,
-	.hub_resume =		dummy_hub_resume,
+	.bus_suspend =		dummy_bus_suspend,
+	.bus_resume =		dummy_bus_resume,
 };
 
 static int dummy_hcd_probe (struct device *dev)
@@ -1936,13 +1937,6 @@ static int dummy_hcd_suspend (struct device *dev, pm_message_t state)
 	dev_dbg (dev, "%s\n", __FUNCTION__);
 	hcd = dev_get_drvdata (dev);
 
-#ifndef CONFIG_USB_SUSPEND
-	/* Otherwise this would never happen */
-	usb_lock_device (hcd->self.root_hub);
-	dummy_hub_suspend (hcd);
-	usb_unlock_device (hcd->self.root_hub);
-#endif
-
 	hcd->state = HC_STATE_SUSPENDED;
 	return 0;
 }
@@ -1955,19 +1949,13 @@ static int dummy_hcd_resume (struct device *dev)
 	hcd = dev_get_drvdata (dev);
 	hcd->state = HC_STATE_RUNNING;
 
-#ifndef CONFIG_USB_SUSPEND
-	/* Otherwise this would never happen */
-	usb_lock_device (hcd->self.root_hub);
-	dummy_hub_resume (hcd);
-	usb_unlock_device (hcd->self.root_hub);
-#endif
-
 	usb_hcd_poll_rh_status (hcd);
 	return 0;
 }
 
 static struct device_driver dummy_hcd_driver = {
 	.name		= (char *) driver_name,
+	.owner		= THIS_MODULE,
 	.bus		= &platform_bus_type,
 	.probe		= dummy_hcd_probe,
 	.remove		= dummy_hcd_remove,

drivers/usb/gadget/ether.c

@@ -2533,6 +2533,7 @@ static struct usb_gadget_driver eth_driver = {
 
 	.driver 	= {
 		.name		= (char *) shortname,
+		.owner		= THIS_MODULE,
 		// .shutdown = ...
 		// .suspend = ...
 		// .resume = ...

drivers/usb/gadget/file_storage.c

@@ -224,6 +224,7 @@
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/kthread.h>
 #include <linux/limits.h>
 #include <linux/list.h>
 #include <linux/module.h>
@@ -669,7 +670,6 @@ struct fsg_dev {
 	wait_queue_head_t	thread_wqh;
 	int			thread_wakeup_needed;
 	struct completion	thread_notifier;
-	int			thread_pid;
 	struct task_struct	*thread_task;
 	sigset_t		thread_signal_mask;
 
@@ -1084,7 +1084,6 @@ static void wakeup_thread(struct fsg_dev *fsg)
 static void raise_exception(struct fsg_dev *fsg, enum fsg_state new_state)
 {
 	unsigned long		flags;
-	struct task_struct	*thread_task;
 
 	/* Do nothing if a higher-priority exception is already in progress.
 	 * If a lower-or-equal priority exception is in progress, preempt it
@@ -1093,9 +1092,9 @@ static void raise_exception(struct fsg_dev *fsg, enum fsg_state new_state)
 	if (fsg->state <= new_state) {
 		fsg->exception_req_tag = fsg->ep0_req_tag;
 		fsg->state = new_state;
-		thread_task = fsg->thread_task;
-		if (thread_task)
-			send_sig_info(SIGUSR1, SEND_SIG_FORCED, thread_task);
+		if (fsg->thread_task)
+			send_sig_info(SIGUSR1, SEND_SIG_FORCED,
+					fsg->thread_task);
 	}
 	spin_unlock_irqrestore(&fsg->lock, flags);
 }
@@ -3383,11 +3382,6 @@ static int fsg_main_thread(void *fsg_)
 {
 	struct fsg_dev		*fsg = (struct fsg_dev *) fsg_;
 
-	fsg->thread_task = current;
-
-	/* Release all our userspace resources */
-	daemonize("file-storage-gadget");
-
 	/* Allow the thread to be killed by a signal, but set the signal mask
 	 * to block everything but INT, TERM, KILL, and USR1. */
 	siginitsetinv(&fsg->thread_signal_mask, sigmask(SIGINT) |
@@ -3400,9 +3394,6 @@ static int fsg_main_thread(void *fsg_)
 	 * that expects a __user pointer and it will work okay. */
 	set_fs(get_ds());
 
-	/* Wait for the gadget registration to finish up */
-	wait_for_completion(&fsg->thread_notifier);
-
 	/* The main loop */
 	while (fsg->state != FSG_STATE_TERMINATED) {
 		if (exception_in_progress(fsg) || signal_pending(current)) {
@@ -3440,8 +3431,9 @@ static int fsg_main_thread(void *fsg_)
 		spin_unlock_irq(&fsg->lock);
 		}
 
+	spin_lock_irq(&fsg->lock);
 	fsg->thread_task = NULL;
-	flush_signals(current);
+	spin_unlock_irq(&fsg->lock);
 
 	/* In case we are exiting because of a signal, unregister the
 	 * gadget driver and close the backing file. */
@@ -3831,12 +3823,11 @@ static int __init fsg_bind(struct usb_gadget *gadget)
 
 	/* Create the LUNs, open their backing files, and register the
 	 * LUN devices in sysfs. */
-	fsg->luns = kmalloc(i * sizeof(struct lun), GFP_KERNEL);
+	fsg->luns = kzalloc(i * sizeof(struct lun), GFP_KERNEL);
 	if (!fsg->luns) {
 		rc = -ENOMEM;
 		goto out;
 	}
-	memset(fsg->luns, 0, i * sizeof(struct lun));
 	fsg->nluns = i;
 
 	for (i = 0; i < fsg->nluns; ++i) {
@@ -3959,10 +3950,12 @@ static int __init fsg_bind(struct usb_gadget *gadget)
 		sprintf(&serial[i], "%02X", c);
 	}
 
-	if ((rc = kernel_thread(fsg_main_thread, fsg, (CLONE_VM | CLONE_FS |
-			CLONE_FILES))) < 0)
+	fsg->thread_task = kthread_create(fsg_main_thread, fsg,
+			"file-storage-gadget");
+	if (IS_ERR(fsg->thread_task)) {
+		rc = PTR_ERR(fsg->thread_task);
 		goto out;
-	fsg->thread_pid = rc;
+	}
 
 	INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
 	INFO(fsg, "Number of LUNs=%d\n", fsg->nluns);
@@ -3994,7 +3987,12 @@ static int __init fsg_bind(struct usb_gadget *gadget)
 	DBG(fsg, "removable=%d, stall=%d, buflen=%u\n",
 			mod_data.removable, mod_data.can_stall,
 			mod_data.buflen);
-	DBG(fsg, "I/O thread pid: %d\n", fsg->thread_pid);
+	DBG(fsg, "I/O thread pid: %d\n", fsg->thread_task->pid);
+
+	set_bit(REGISTERED, &fsg->atomic_bitflags);
+
+	/* Tell the thread to start working */
+	wake_up_process(fsg->thread_task);
 	return 0;
 
 autoconf_fail:
@@ -4046,6 +4044,7 @@ static struct usb_gadget_driver		fsg_driver = {
 
 	.driver		= {
 		.name		= (char *) shortname,
+		.owner		= THIS_MODULE,
 		// .release = ...
 		// .suspend = ...
 		// .resume = ...
@@ -4057,10 +4056,9 @@ static int __init fsg_alloc(void)
 {
 	struct fsg_dev		*fsg;
 
-	fsg = kmalloc(sizeof *fsg, GFP_KERNEL);
+	fsg = kzalloc(sizeof *fsg, GFP_KERNEL);
 	if (!fsg)
 		return -ENOMEM;
-	memset(fsg, 0, sizeof *fsg);
 	spin_lock_init(&fsg->lock);
 	init_rwsem(&fsg->filesem);
 	init_waitqueue_head(&fsg->thread_wqh);
@@ -4086,15 +4084,9 @@ static int __init fsg_init(void)
 	if ((rc = fsg_alloc()) != 0)
 		return rc;
 	fsg = the_fsg;
-	if ((rc = usb_gadget_register_driver(&fsg_driver)) != 0) {
+	if ((rc = usb_gadget_register_driver(&fsg_driver)) != 0)
 		fsg_free(fsg);
 	return rc;
-	}
-	set_bit(REGISTERED, &fsg->atomic_bitflags);
-
-	/* Tell the thread to start working */
-	complete(&fsg->thread_notifier);
-	return 0;
 }
 module_init(fsg_init);
 

drivers/usb/gadget/goku_udc.c

@@ -1970,6 +1970,7 @@ MODULE_DEVICE_TABLE (pci, pci_ids);
 static struct pci_driver goku_pci_driver = {
 	.name =		(char *) driver_name,
 	.id_table =	pci_ids,
+	.owner =	THIS_MODULE,
 
 	.probe =	goku_probe,
 	.remove =	goku_remove,

drivers/usb/gadget/lh7a40x_udc.c

@@ -2140,6 +2140,7 @@ static int lh7a40x_udc_remove(struct device *_dev)
 
 static struct device_driver udc_driver = {
 	.name = (char *)driver_name,
+	.owner = THIS_MODULE,
 	.bus = &platform_bus_type,
 	.probe = lh7a40x_udc_probe,
 	.remove = lh7a40x_udc_remove

drivers/usb/gadget/net2280.c

@@ -2948,6 +2948,7 @@ MODULE_DEVICE_TABLE (pci, pci_ids);
 static struct pci_driver net2280_pci_driver = {
 	.name =		(char *) driver_name,
 	.id_table =	pci_ids,
+	.owner =	THIS_MODULE,
 
 	.probe =	net2280_probe,
 	.remove =	net2280_remove,

drivers/usb/gadget/pxa2xx_udc.c

@@ -2631,6 +2631,7 @@ static int pxa2xx_udc_resume(struct device *dev)
 
 static struct device_driver udc_driver = {
 	.name		= "pxa2xx-udc",
+	.owner		= THIS_MODULE,
 	.bus		= &platform_bus_type,
 	.probe		= pxa2xx_udc_probe,
 	.shutdown	= pxa2xx_udc_shutdown,

drivers/usb/gadget/zero.c

@@ -1302,6 +1302,7 @@ static struct usb_gadget_driver zero_driver = {
 
 	.driver 	= {
 		.name		= (char *) shortname,
+		.owner		= THIS_MODULE,
 		// .shutdown = ...
 		// .suspend = ...
 		// .resume = ...

drivers/usb/host/Makefile

 #
-# Makefile for USB Host Controller Driver
-# framework and drivers
+# Makefile for USB Host Controller Drivers
 #
 
+obj-$(CONFIG_PCI)		+= pci-quirks.o
+
 obj-$(CONFIG_USB_EHCI_HCD)	+= ehci-hcd.o
 obj-$(CONFIG_USB_ISP116X_HCD)	+= isp116x-hcd.o
 obj-$(CONFIG_USB_OHCI_HCD)	+= ohci-hcd.o

drivers/usb/host/ehci.h

@@ -97,6 +97,7 @@ struct ehci_hcd {			/* one per controller */
 #else
 #	define COUNT(x) do {} while (0)
 #endif
+	u8			sbrn;		/* packed release number */
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */ 

drivers/usb/host/isp116x.h

@@ -253,7 +253,6 @@ static const int cc_to_error[16] = {
 
 struct isp116x {
 	spinlock_t lock;
-	struct work_struct rh_resume;
 
 	void __iomem *addr_reg;
 	void __iomem *data_reg;