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

73 files changed, 7032 insertions, 3904 deletions

diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 8e184e2641c..79861ee12a2 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -715,13 +715,11 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
 			usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
 			instance->rcv_buf, PAGE_SIZE,
 			cxacru_blocking_completion, &instance->rcv_done, 1);
-	instance->rcv_urb->transfer_flags |= URB_ASYNC_UNLINK;
 
 	usb_fill_int_urb(instance->snd_urb,
 			usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
 			instance->snd_buf, PAGE_SIZE,
 			cxacru_blocking_completion, &instance->snd_done, 4);
-	instance->snd_urb->transfer_flags |= URB_ASYNC_UNLINK;
 
 	init_MUTEX(&instance->cm_serialize);
 
diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig
index 0561d0234f2..333e39bb105 100644
--- a/drivers/usb/class/Kconfig
+++ b/drivers/usb/class/Kconfig
@@ -4,9 +4,22 @@
 comment "USB Device Class drivers"
 	depends on USB
 
+config OBSOLETE_OSS_USB_DRIVER
+	bool "Obsolete OSS USB drivers"
+	depends on USB && SOUND
+	help
+	  This option enables support for the obsolete USB Audio and Midi
+	  drivers that are scheduled for removal in the near future since
+	  there are ALSA drivers for the same hardware.
+
+	  Please contact Adrian Bunk <bunk@stusta.de> if you had to
+	  say Y here because of missing support in the ALSA drivers.
+
+	  If unsure, say N.
+
 config USB_AUDIO
 	tristate "USB Audio support"
-	depends on USB && SOUND
+	depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
 	help
 	  Say Y here if you want to connect USB audio equipment such as
 	  speakers to your computer's USB port. You only need this if you use
@@ -40,10 +53,12 @@ config USB_BLUETOOTH_TTY
 
 config USB_MIDI
 	tristate "USB MIDI support"
-	depends on USB && SOUND
+	depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
 	---help---
 	  Say Y here if you want to connect a USB MIDI device to your
-	  computer's USB port. This driver is for devices that comply with
+	  computer's USB port.  You only need this if you use the OSS
+	  sound system; USB MIDI devices are supported by ALSA's USB
+	  audio driver. This driver is for devices that comply with
 	  'Universal Serial Bus Device Class Definition for MIDI Device'.
 
 	  The following devices are known to work:
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index 7ce43fb8118..e195709c9c7 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -310,8 +310,9 @@ static int usblp_check_status(struct usblp *usblp, int err)
 
 	error = usblp_read_status (usblp, usblp->statusbuf);
 	if (error < 0) {
-		err("usblp%d: error %d reading printer status",
-			usblp->minor, error);
+		if (printk_ratelimit())
+			err("usblp%d: error %d reading printer status",
+				usblp->minor, error);
 		return 0;
 	}
 
@@ -604,7 +605,9 @@ static int usblp_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
 			case LPGETSTATUS:
 				if (usblp_read_status(usblp, usblp->statusbuf)) {
-					err("usblp%d: failed reading printer status", usblp->minor);
+					if (printk_ratelimit())
+						err("usblp%d: failed reading printer status",
+							usblp->minor);
 					retval = -EIO;
 					goto done;
 				}
diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile
index 9e8c377b816..d5503cf0bf7 100644
--- a/drivers/usb/core/Makefile
+++ b/drivers/usb/core/Makefile
@@ -3,14 +3,14 @@
 #
 
 usbcore-objs	:= usb.o hub.o hcd.o urb.o message.o \
-			config.o file.o buffer.o sysfs.o
+			config.o file.o buffer.o sysfs.o devio.o
 
 ifeq ($(CONFIG_PCI),y)
 	usbcore-objs	+= hcd-pci.o
 endif
 
 ifeq ($(CONFIG_USB_DEVICEFS),y)
-	usbcore-objs	+= devio.o inode.o devices.o
+	usbcore-objs	+= inode.o devices.o
 endif
 
 obj-$(CONFIG_USB)	+= usbcore.o
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index f86bf1454e2..b4265aa7d45 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -43,6 +43,7 @@
 #include <linux/module.h>
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
+#include <linux/cdev.h>
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
 #include <linux/moduleparam.h>
@@ -50,6 +51,10 @@
 #include "hcd.h"	/* for usbcore internals */
 #include "usb.h"
 
+#define USB_MAXBUS			64
+#define USB_DEVICE_MAX			USB_MAXBUS * 128
+static struct class *usb_device_class;
+
 struct async {
 	struct list_head asynclist;
 	struct dev_state *ps;
@@ -71,6 +76,8 @@ MODULE_PARM_DESC (usbfs_snoop, "true to log all usbfs traffic");
 			dev_info( dev , format , ## arg);	\
 	} while (0)
 
+#define USB_DEVICE_DEV		MKDEV(USB_DEVICE_MAJOR, 0)
+
 
 #define	MAX_USBFS_BUFFER_SIZE	16384
 
@@ -487,7 +494,7 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, unsig
  */
 static int usbdev_open(struct inode *inode, struct file *file)
 {
-	struct usb_device *dev;
+	struct usb_device *dev = NULL;
 	struct dev_state *ps;
 	int ret;
 
@@ -501,11 +508,16 @@ static int usbdev_open(struct inode *inode, struct file *file)
 
 	lock_kernel();
 	ret = -ENOENT;
-	dev = usb_get_dev(inode->u.generic_ip);
+	/* check if we are called from a real node or usbfs */
+	if (imajor(inode) == USB_DEVICE_MAJOR)
+		dev = usbdev_lookup_minor(iminor(inode));
+	if (!dev)
+		dev = inode->u.generic_ip;
 	if (!dev) {
 		kfree(ps);
 		goto out;
 	}
+	usb_get_dev(dev);
 	ret = 0;
 	ps->dev = dev;
 	ps->file = file;
@@ -1226,7 +1238,6 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
 	int			retval = 0;
 	struct usb_interface    *intf = NULL;
 	struct usb_driver       *driver = NULL;
-	int			i;
 
 	/* get input parameters and alloc buffer */
 	if (copy_from_user(&ctrl, arg, sizeof (ctrl)))
@@ -1258,15 +1269,6 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
 	/* disconnect kernel driver from interface */
 	case USBDEVFS_DISCONNECT:
 
-		/* don't allow the user to unbind the hub driver from
-		 * a hub with children to manage */
-		for (i = 0; i < ps->dev->maxchild; ++i) {
-			if (ps->dev->children[i])
-				retval = -EBUSY;
-		}
-		if (retval)
-			break;
-
 		down_write(&usb_bus_type.subsys.rwsem);
 		if (intf->dev.driver) {
 			driver = to_usb_driver(intf->dev.driver);
@@ -1477,3 +1479,79 @@ struct file_operations usbfs_device_file_operations = {
 	.open =		usbdev_open,
 	.release =	usbdev_release,
 };
+
+struct usb_device *usbdev_lookup_minor(int minor)
+{
+	struct class_device *class_dev;
+	struct usb_device *dev = NULL;
+
+	down(&usb_device_class->sem);
+	list_for_each_entry(class_dev, &usb_device_class->children, node) {
+		if (class_dev->devt == MKDEV(USB_DEVICE_MAJOR, minor)) {
+			dev = class_dev->class_data;
+			break;
+		}
+	}
+	up(&usb_device_class->sem);
+
+	return dev;
+};
+
+void usbdev_add(struct usb_device *dev)
+{
+	int minor = ((dev->bus->busnum-1) * 128) + (dev->devnum-1);
+
+	dev->class_dev = class_device_create(usb_device_class,
+				MKDEV(USB_DEVICE_MAJOR, minor), &dev->dev,
+				"usbdev%d.%d", dev->bus->busnum, dev->devnum);
+
+	dev->class_dev->class_data = dev;
+}
+
+void usbdev_remove(struct usb_device *dev)
+{
+	class_device_unregister(dev->class_dev);
+}
+
+static struct cdev usb_device_cdev = {
+	.kobj   = {.name = "usb_device", },
+	.owner  = THIS_MODULE,
+};
+
+int __init usbdev_init(void)
+{
+	int retval;
+
+	retval = register_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX,
+			"usb_device");
+	if (retval) {
+		err("unable to register minors for usb_device");
+		goto out;
+	}
+	cdev_init(&usb_device_cdev, &usbfs_device_file_operations);
+	retval = cdev_add(&usb_device_cdev, USB_DEVICE_DEV, USB_DEVICE_MAX);
+	if (retval) {
+		err("unable to get usb_device major %d", USB_DEVICE_MAJOR);
+		unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX);
+		goto out;
+	}
+	usb_device_class = class_create(THIS_MODULE, "usb_device");
+	if (IS_ERR(usb_device_class)) {
+		err("unable to register usb_device class");
+		retval = PTR_ERR(usb_device_class);
+		usb_device_class = NULL;
+		cdev_del(&usb_device_cdev);
+		unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX);
+	}
+
+out:
+	return retval;
+}
+
+void usbdev_cleanup(void)
+{
+	class_destroy(usb_device_class);
+	cdev_del(&usb_device_cdev);
+	unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX);
+}
+
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 28055f95645..ac451fa7e4d 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -339,11 +339,11 @@ extern int usb_check_bandwidth (struct usb_device *dev, struct urb *urb);
  * to preallocate bandwidth)
  */
 #define USB2_HOST_DELAY	5	/* nsec, guess */
-#define HS_NSECS(bytes) ( ((55 * 8 * 2083)/1000) \
-	+ ((2083UL * (3167 + BitTime (bytes)))/1000) \
+#define HS_NSECS(bytes) ( ((55 * 8 * 2083) \
+	+ (2083UL * (3 + BitTime(bytes))))/1000 \
 	+ USB2_HOST_DELAY)
-#define HS_NSECS_ISO(bytes) ( ((38 * 8 * 2083)/1000) \
-	+ ((2083UL * (3167 + BitTime (bytes)))/1000) \
+#define HS_NSECS_ISO(bytes) ( ((38 * 8 * 2083) \
+	+ (2083UL * (3 + BitTime(bytes))))/1000 \
 	+ USB2_HOST_DELAY)
 #define HS_USECS(bytes) NS_TO_US (HS_NSECS(bytes))
 #define HS_USECS_ISO(bytes) NS_TO_US (HS_NSECS_ISO(bytes))
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index c9412daff68..758c7f0ed15 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -492,6 +492,23 @@ static int hub_hub_status(struct usb_hub *hub,
 	return ret;
 }
 
+static int hub_port_disable(struct usb_hub *hub, int port1, int set_state)
+{
+	struct usb_device *hdev = hub->hdev;
+	int ret;
+
+	if (hdev->children[port1-1] && set_state) {
+		usb_set_device_state(hdev->children[port1-1],
+				USB_STATE_NOTATTACHED);
+	}
+	ret = clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE);
+	if (ret)
+		dev_err(hub->intfdev, "cannot disable port %d (err = %d)\n",
+			port1, ret);
+
+	return ret;
+}
+
 static int hub_configure(struct usb_hub *hub,
 	struct usb_endpoint_descriptor *endpoint)
 {
@@ -610,19 +627,33 @@ static int hub_configure(struct usb_hub *hub,
 			break;
 	}
 
+	/* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
 	switch (hub->descriptor->wHubCharacteristics & HUB_CHAR_TTTT) {
-		case 0x00:
-			if (hdev->descriptor.bDeviceProtocol != 0)
-				dev_dbg(hub_dev, "TT requires at most 8 FS bit times\n");
+		case HUB_TTTT_8_BITS:
+			if (hdev->descriptor.bDeviceProtocol != 0) {
+				hub->tt.think_time = 666;
+				dev_dbg(hub_dev, "TT requires at most %d "
+						"FS bit times (%d ns)\n",
+					8, hub->tt.think_time);
+			}
 			break;
-		case 0x20:
-			dev_dbg(hub_dev, "TT requires at most 16 FS bit times\n");
+		case HUB_TTTT_16_BITS:
+			hub->tt.think_time = 666 * 2;
+			dev_dbg(hub_dev, "TT requires at most %d "
+					"FS bit times (%d ns)\n",
+				16, hub->tt.think_time);
 			break;
-		case 0x40:
-			dev_dbg(hub_dev, "TT requires at most 24 FS bit times\n");
+		case HUB_TTTT_24_BITS:
+			hub->tt.think_time = 666 * 3;
+			dev_dbg(hub_dev, "TT requires at most %d "
+					"FS bit times (%d ns)\n",
+				24, hub->tt.think_time);
 			break;
-		case 0x60:
-			dev_dbg(hub_dev, "TT requires at most 32 FS bit times\n");
+		case HUB_TTTT_32_BITS:
+			hub->tt.think_time = 666 * 4;
+			dev_dbg(hub_dev, "TT requires at most %d "
+					"FS bit times (%d ns)\n",
+				32, hub->tt.think_time);
 			break;
 	}
 
@@ -712,20 +743,36 @@ fail:
 
 static unsigned highspeed_hubs;
 
+/* Called after the hub driver is unbound from a hub with children */
+static void hub_remove_children_work(void *__hub)
+{
+	struct usb_hub		*hub = __hub;
+	struct usb_device	*hdev = hub->hdev;
+	int			i;
+
+	kfree(hub);
+
+	usb_lock_device(hdev);
+	for (i = 0; i < hdev->maxchild; ++i) {
+		if (hdev->children[i])
+			usb_disconnect(&hdev->children[i]);
+	}
+	usb_unlock_device(hdev);
+	usb_put_dev(hdev);
+}
+
 static void hub_disconnect(struct usb_interface *intf)
 {
 	struct usb_hub *hub = usb_get_intfdata (intf);
 	struct usb_device *hdev;
+	int n, port1;
 
-	if (!hub)
-		return;
+	usb_set_intfdata (intf, NULL);
 	hdev = hub->hdev;
 
 	if (hdev->speed == USB_SPEED_HIGH)
 		highspeed_hubs--;
 
-	usb_set_intfdata (intf, NULL);
-
 	hub_quiesce(hub);
 	usb_free_urb(hub->urb);
 	hub->urb = NULL;
@@ -746,8 +793,27 @@ static void hub_disconnect(struct usb_interface *intf)
 		hub->buffer = NULL;
 	}
 
-	/* Free the memory */
-	kfree(hub);
+	/* If there are any children then this is an unbind only, not a
+	 * physical disconnection.  The active ports must be disabled
+	 * and later on we must call usb_disconnect().  We can't call
+	 * it now because we may not hold the hub's device lock.
+	 */
+	n = 0;
+	for (port1 = 1; port1 <= hdev->maxchild; ++port1) {
+		if (hdev->children[port1 - 1]) {
+			++n;
+			hub_port_disable(hub, port1, 1);
+		}
+	}
+
+	if (n == 0)
+		kfree(hub);
+	else {
+		/* Reuse the hub->leds work_struct for our own purposes */
+		INIT_WORK(&hub->leds, hub_remove_children_work, hub);
+		schedule_work(&hub->leds);
+		usb_get_dev(hdev);
+	}
 }
 
 static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
@@ -1051,6 +1117,7 @@ void usb_disconnect(struct usb_device **pdev)
 	dev_dbg (&udev->dev, "unregistering device\n");
 	release_address(udev);
 	usbfs_remove_device(udev);
+	usbdev_remove(udev);
 	usb_remove_sysfs_dev_files(udev);
 
 	/* Avoid races with recursively_mark_NOTATTACHED() */
@@ -1290,6 +1357,7 @@ int usb_new_device(struct usb_device *udev)
 	/* USB device state == configured ... usable */
 
 	/* add a /proc/bus/usb entry */
+	usbdev_add(udev);
 	usbfs_add_device(udev);
 	return 0;
 
@@ -1428,23 +1496,6 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 	return status;
 }
 
-static int hub_port_disable(struct usb_hub *hub, int port1, int set_state)
-{
-	struct usb_device *hdev = hub->hdev;
-	int ret;
-
-	if (hdev->children[port1-1] && set_state) {
-		usb_set_device_state(hdev->children[port1-1],
-				USB_STATE_NOTATTACHED);
-	}
-	ret = clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE);
-	if (ret)
-		dev_err(hub->intfdev, "cannot disable port %d (err = %d)\n",
-			port1, ret);
-
-	return ret;
-}
-
 /*
  * Disable a port and mark a logical connnect-change event, so that some
  * time later khubd will disconnect() any existing usb_device on the port
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index 53bf5649621..e7fa9b5a521 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -157,6 +157,12 @@ enum hub_led_mode {
 
 struct usb_device;
 
+/* Transaction Translator Think Times, in bits */
+#define HUB_TTTT_8_BITS		0x00
+#define HUB_TTTT_16_BITS	0x20
+#define HUB_TTTT_24_BITS	0x40
+#define HUB_TTTT_32_BITS	0x60
+
 /*
  * As of USB 2.0, full/low speed devices are segregated into trees.
  * One type grows from USB 1.1 host controllers (OHCI, UHCI etc).
@@ -170,6 +176,7 @@ struct usb_device;
 struct usb_tt {
 	struct usb_device	*hub;	/* upstream highspeed hub */
 	int			multi;	/* true means one TT per port */
+	unsigned		think_time;	/* think time in ns */
 
 	/* for control/bulk error recovery (CLEAR_TT_BUFFER) */