Merge upstream kernel changes into 'C/H/S support' branch of libata.

5 files changed, 111 insertions, 74 deletions

diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index ef0b35731ff..83e815d3cd5 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -239,7 +239,7 @@ static char *usb_dump_interface_descriptor(char *start, char *end,
 	int setno)
 {
 	const struct usb_interface_descriptor *desc = &intfc->altsetting[setno].desc;
-	char *driver_name = "";
+	const char *driver_name = "";
 
 	if (start > end)
 		return start;
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 38ed2220c9f..65ca131cc44 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -68,7 +68,7 @@ static struct file_operations usb_fops = {
 	.open =		usb_open,
 };
 
-static struct class_simple *usb_class;
+static struct class *usb_class;
 
 int usb_major_init(void)
 {
@@ -80,9 +80,10 @@ int usb_major_init(void)
 		goto out;
 	}
 
-	usb_class = class_simple_create(THIS_MODULE, "usb");
+	usb_class = class_create(THIS_MODULE, "usb");
 	if (IS_ERR(usb_class)) {
-		err("class_simple_create failed for usb devices");
+		error = PTR_ERR(usb_class);
+		err("class_create failed for usb devices");
 		unregister_chrdev(USB_MAJOR, "usb");
 		goto out;
 	}
@@ -95,7 +96,7 @@ out:
 
 void usb_major_cleanup(void)
 {
-	class_simple_destroy(usb_class);
+	class_destroy(usb_class);
 	devfs_remove("usb");
 	unregister_chrdev(USB_MAJOR, "usb");
 }
@@ -171,7 +172,7 @@ int usb_register_dev(struct usb_interface *intf,
 		++temp;
 	else
 		temp = name;
-	intf->class_dev = class_simple_device_add(usb_class, MKDEV(USB_MAJOR, minor), &intf->dev, "%s", temp);
+	intf->class_dev = class_device_create(usb_class, MKDEV(USB_MAJOR, minor), &intf->dev, "%s", temp);
 	if (IS_ERR(intf->class_dev)) {
 		spin_lock (&minor_lock);
 		usb_minors[intf->minor] = NULL;
@@ -220,7 +221,7 @@ void usb_deregister_dev(struct usb_interface *intf,
 
 	snprintf(name, BUS_ID_SIZE, class_driver->name, intf->minor - minor_base);
 	devfs_remove (name);
-	class_simple_device_remove(MKDEV(USB_MAJOR, intf->minor));
+	class_device_destroy(usb_class, MKDEV(USB_MAJOR, intf->minor));
 	intf->class_dev = NULL;
 	intf->minor = -1;
 }
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 266e9e06a9f..d041782e0c8 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -651,50 +651,45 @@ static int usb_rh_urb_dequeue (struct usb_hcd *hcd, struct urb *urb)
 /*-------------------------------------------------------------------------*/
 
 /* exported only within usbcore */
-struct usb_bus *usb_bus_get (struct usb_bus *bus)
+struct usb_bus *usb_bus_get(struct usb_bus *bus)
 {
-	struct class_device *tmp;
+	if (bus)
+		kref_get(&bus->kref);
+	return bus;
+}
 
-	if (!bus)
-		return NULL;
+static void usb_host_release(struct kref *kref)
+{
+	struct usb_bus *bus = container_of(kref, struct usb_bus, kref);
 
-	tmp = class_device_get(&bus->class_dev);
-	if (tmp)        
-		return to_usb_bus(tmp);
-	else
-		return NULL;
+	if (bus->release)
+		bus->release(bus);
 }
 
 /* exported only within usbcore */
-void usb_bus_put (struct usb_bus *bus)
+void usb_bus_put(struct usb_bus *bus)
 {
 	if (bus)
-		class_device_put(&bus->class_dev);
+		kref_put(&bus->kref, usb_host_release);
 }
 
 /*-------------------------------------------------------------------------*/
 
-static void usb_host_release(struct class_device *class_dev)
-{
-	struct usb_bus *bus = to_usb_bus(class_dev);
-
-	if (bus->release)
-		bus->release(bus);
-}
-
-static struct class usb_host_class = {
-	.name		= "usb_host",
-	.release	= &usb_host_release,
-};
+static struct class *usb_host_class;
 
 int usb_host_init(void)
 {
-	return class_register(&usb_host_class);
+	int retval = 0;
+
+	usb_host_class = class_create(THIS_MODULE, "usb_host");
+	if (IS_ERR(usb_host_class))
+		retval = PTR_ERR(usb_host_class);
+	return retval;
 }
 
 void usb_host_cleanup(void)
 {
-	class_unregister(&usb_host_class);
+	class_destroy(usb_host_class);
 }
 
 /**
@@ -719,8 +714,7 @@ static void usb_bus_init (struct usb_bus *bus)
 
 	INIT_LIST_HEAD (&bus->bus_list);
 
-	class_device_initialize(&bus->class_dev);
-	bus->class_dev.class = &usb_host_class;
+	kref_init(&bus->kref);
 }
 
 /**
@@ -761,7 +755,6 @@ struct usb_bus *usb_alloc_bus (struct usb_operations *op)
 static int usb_register_bus(struct usb_bus *bus)
 {
 	int busnum;
-	int retval;
 
 	down (&usb_bus_list_lock);
 	busnum = find_next_zero_bit (busmap.busmap, USB_MAXBUS, 1);
@@ -774,15 +767,15 @@ static int usb_register_bus(struct usb_bus *bus)
 		return -E2BIG;
 	}
 
-	snprintf(bus->class_dev.class_id, BUS_ID_SIZE, "usb%d", busnum);
-	bus->class_dev.dev = bus->controller;
-	retval = class_device_add(&bus->class_dev);
-	if (retval) {
+	bus->class_dev = class_device_create(usb_host_class, MKDEV(0,0), bus->controller, "usb%d", busnum);
+	if (IS_ERR(bus->class_dev)) {
 		clear_bit(busnum, busmap.busmap);
 		up(&usb_bus_list_lock);
-		return retval;
+		return PTR_ERR(bus->class_dev);
 	}
 
+	class_set_devdata(bus->class_dev, bus);
+
 	/* Add it to the local list of buses */
 	list_add (&bus->bus_list, &usb_bus_list);
 	up (&usb_bus_list_lock);
@@ -820,7 +813,7 @@ static void usb_deregister_bus (struct usb_bus *bus)
 
 	clear_bit (bus->busnum, busmap.busmap);
 
-	class_device_del(&bus->class_dev);
+	class_device_unregister(bus->class_dev);
 }
 
 /**
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index ec9b3bde8ae..740cb4c668d 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -24,7 +24,7 @@
 
 /* Active configuration fields */
 #define usb_actconfig_show(field, multiplier, format_string)		\
-static ssize_t  show_##field (struct device *dev, char *buf)		\
+static ssize_t  show_##field (struct device *dev, struct device_attribute *attr, char *buf)		\
 {									\
 	struct usb_device *udev;					\
 	struct usb_host_config *actconfig;				\
@@ -46,7 +46,7 @@ usb_actconfig_attr (bNumInterfaces, 1, "%2d\n")
 usb_actconfig_attr (bmAttributes, 1, "%2x\n")
 usb_actconfig_attr (bMaxPower, 2, "%3dmA\n")
 
-static ssize_t show_configuration_string(struct device *dev, char *buf)
+static ssize_t show_configuration_string(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_device *udev;
 	struct usb_host_config *actconfig;
@@ -69,7 +69,7 @@ static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL);
 usb_actconfig_show(bConfigurationValue, 1, "%u\n");
 
 static ssize_t
-set_bConfigurationValue (struct device *dev, const char *buf, size_t count)
+set_bConfigurationValue (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
 	struct usb_device	*udev = udev = to_usb_device (dev);
 	int			config, value;
@@ -87,7 +87,7 @@ static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR,
 
 /* String fields */
 #define usb_string_attr(name)						\
-static ssize_t  show_##name(struct device *dev, char *buf)		\
+static ssize_t  show_##name(struct device *dev, struct device_attribute *attr, char *buf)		\
 {									\
 	struct usb_device *udev;					\
 	int len;							\
@@ -107,7 +107,7 @@ usb_string_attr(manufacturer);
 usb_string_attr(serial);
 
 static ssize_t
-show_speed (struct device *dev, char *buf)
+show_speed (struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_device *udev;
 	char *speed;
@@ -133,7 +133,7 @@ show_speed (struct device *dev, char *buf)
 static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
 
 static ssize_t
-show_devnum (struct device *dev, char *buf)
+show_devnum (struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_device *udev;
 
@@ -143,7 +143,7 @@ show_devnum (struct device *dev, char *buf)
 static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);
 
 static ssize_t
-show_version (struct device *dev, char *buf)
+show_version (struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_device *udev;
 	u16 bcdUSB;
@@ -155,7 +155,7 @@ show_version (struct device *dev, char *buf)
 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 
 static ssize_t
-show_maxchild (struct device *dev, char *buf)
+show_maxchild (struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_device *udev;
 
@@ -167,7 +167,7 @@ static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);
 /* Descriptor fields */
 #define usb_descriptor_attr_le16(field, format_string)			\
 static ssize_t								\
-show_##field (struct device *dev, char *buf)				\
+show_##field (struct device *dev, struct device_attribute *attr, char *buf)				\
 {									\
 	struct usb_device *udev;					\
 									\
@@ -183,7 +183,7 @@ usb_descriptor_attr_le16(bcdDevice, "%04x\n")
 
 #define usb_descriptor_attr(field, format_string)			\
 static ssize_t								\
-show_##field (struct device *dev, char *buf)				\
+show_##field (struct device *dev, struct device_attribute *attr, char *buf)				\
 {									\
 	struct usb_device *udev;					\
 									\
@@ -254,7 +254,7 @@ void usb_remove_sysfs_dev_files (struct usb_device *udev)
 /* Interface fields */
 #define usb_intf_attr(field, format_string)				\
 static ssize_t								\
-show_##field (struct device *dev, char *buf)				\
+show_##field (struct device *dev, struct device_attribute *attr, char *buf)				\
 {									\
 	struct usb_interface *intf = to_usb_interface (dev);		\
 									\
@@ -269,7 +269,7 @@ usb_intf_attr (bInterfaceClass, "%02x\n")
 usb_intf_attr (bInterfaceSubClass, "%02x\n")
 usb_intf_attr (bInterfaceProtocol, "%02x\n")
 
-static ssize_t show_interface_string(struct device *dev, char *buf)
+static ssize_t show_interface_string(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_interface *intf;
 	struct usb_device *udev;
@@ -286,6 +286,37 @@ static ssize_t show_interface_string(struct device *dev, char *buf)
 }
 static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL);
 
+static ssize_t show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct usb_interface *intf;
+	struct usb_device *udev;
+	int len;
+
+	intf = to_usb_interface(dev);
+	udev = interface_to_usbdev(intf);
+
+	len = sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic",
+			       le16_to_cpu(udev->descriptor.idVendor),
+			       le16_to_cpu(udev->descriptor.idProduct),
+			       le16_to_cpu(udev->descriptor.bcdDevice),
+			       udev->descriptor.bDeviceClass,
+			       udev->descriptor.bDeviceSubClass,
+			       udev->descriptor.bDeviceProtocol);
+	buf += len;
+
+	if (udev->descriptor.bDeviceClass == 0) {
+		struct usb_host_interface *alt = intf->cur_altsetting;
+
+		return len + sprintf(buf, "%02Xisc%02Xip%02X\n",
+			       alt->desc.bInterfaceClass,
+			       alt->desc.bInterfaceSubClass,
+			       alt->desc.bInterfaceProtocol);
+ 	} else {
+		return len + sprintf(buf, "*isc*ip*\n");
+	}
+}
+static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
+
 static struct attribute *intf_attrs[] = {
 	&dev_attr_bInterfaceNumber.attr,
 	&dev_attr_bAlternateSetting.attr,
@@ -293,6 +324,7 @@ static struct attribute *intf_attrs[] = {
 	&dev_attr_bInterfaceClass.attr,
 	&dev_attr_bInterfaceSubClass.attr,
 	&dev_attr_bInterfaceProtocol.attr,
+	&dev_attr_modalias.attr,
 	NULL,
 };
 static struct attribute_group intf_attr_grp = {
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 25cf7e9eccf..a3c42203213 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -293,7 +293,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
 	/* if interface was already added, bind now; else let
 	 * the future device_add() bind it, bypassing probe()
 	 */
-	if (!list_empty (&dev->bus_list))
+	if (klist_node_attached(&dev->knode_bus))
 		device_bind_driver(dev);
 
 	return 0;
@@ -322,9 +322,15 @@ void usb_driver_release_interface(struct usb_driver *driver,
 	if (!dev->driver || dev->driver != &driver->driver)
 		return;
 
-	/* don't disconnect from disconnect(), or before dev_add() */
-	if (!list_empty (&dev->driver_list) && !list_empty (&dev->bus_list))
+	/* don't release from within disconnect() */
+	if (iface->condition != USB_INTERFACE_BOUND)
+		return;
+
+	/* release only after device_add() */
+	if (klist_node_attached(&dev->knode_bus)) {
+		iface->condition = USB_INTERFACE_UNBINDING;
 		device_release_driver(dev);
+	}
 
 	dev->driver = NULL;
 	usb_set_intfdata(iface, NULL);
@@ -462,6 +468,25 @@ usb_match_id(struct usb_interface *interface, const struct usb_device_id *id)
 	return NULL;
 }
 
+
+static int __find_interface(struct device * dev, void * data)
+{
+	struct usb_interface ** ret = (struct usb_interface **)data;
+	struct usb_interface * intf = *ret;
+	int *minor = (int *)data;
+
+	/* can't look at usb devices, only interfaces */
+	if (dev->driver == &usb_generic_driver)
+		return 0;
+
+	intf = to_usb_interface(dev);
+	if (intf->minor != -1 && intf->minor == *minor) {
+		*ret = intf;
+		return 1;
+	}
+	return 0;
+}
+
 /**
  * usb_find_interface - find usb_interface pointer for driver and device
  * @drv: the driver whose current configuration is considered
@@ -473,26 +498,12 @@ usb_match_id(struct usb_interface *interface, const struct usb_device_id *id)
  */
 struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor)
 {
-	struct list_head *entry;
-	struct device *dev;
-	struct usb_interface *intf;
+	struct usb_interface *intf = (struct usb_interface *)(long)minor;
+	int ret;
 
-	list_for_each(entry, &drv->driver.devices) {
-		dev = container_of(entry, struct device, driver_list);
-
-		/* can't look at usb devices, only interfaces */
-		if (dev->driver == &usb_generic_driver)
-			continue;
-
-		intf = to_usb_interface(dev);
-		if (intf->minor == -1)
-			continue;
-		if (intf->minor == minor)
-			return intf;
-	}
+	ret = driver_for_each_device(&drv->driver, NULL, &intf, __find_interface);
 
-	/* no device found that matches */
-	return NULL;	
+	return ret ? intf : NULL;
 }
 
 static int usb_device_match (struct device *dev, struct device_driver *drv)