#include <linux/spinlock.h>
#include <linux/errno.h>
#include <linux/usb.h>
+#include <linux/usb/hcd.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
+#include <linux/debugfs.h>
#include <asm/io.h>
#include <linux/scatterlist.h>
#include <linux/mm.h>
#include <linux/dma-mapping.h>
-#include "hcd.h"
#include "usb.h"
static int nousb; /* Disable USB when built into kernel image */
-/* Workqueue for autosuspend and for remote wakeup of root hubs */
-struct workqueue_struct *ksuspend_usb_wq;
-
#ifdef CONFIG_USB_SUSPEND
static int usb_autosuspend_delay = 2; /* Default delay value,
* in seconds */
/**
+ * usb_find_alt_setting() - Given a configuration, find the alternate setting
+ * for the given interface.
+ * @config: the configuration to search (not necessarily the current config).
+ * @iface_num: interface number to search in
+ * @alt_num: alternate interface setting number to search for.
+ *
+ * Search the configuration's interface cache for the given alt setting.
+ */
+struct usb_host_interface *usb_find_alt_setting(
+ struct usb_host_config *config,
+ unsigned int iface_num,
+ unsigned int alt_num)
+{
+ struct usb_interface_cache *intf_cache = NULL;
+ int i;
+
+ for (i = 0; i < config->desc.bNumInterfaces; i++) {
+ if (config->intf_cache[i]->altsetting[0].desc.bInterfaceNumber
+ == iface_num) {
+ intf_cache = config->intf_cache[i];
+ break;
+ }
+ }
+ if (!intf_cache)
+ return NULL;
+ for (i = 0; i < intf_cache->num_altsetting; i++)
+ if (intf_cache->altsetting[i].desc.bAlternateSetting == alt_num)
+ return &intf_cache->altsetting[i];
+
+ printk(KERN_DEBUG "Did not find alt setting %u for intf %u, "
+ "config %u\n", alt_num, iface_num,
+ config->desc.bConfigurationValue);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(usb_find_alt_setting);
+
+/**
* usb_ifnum_to_if - get the interface object with a given interface number
* @dev: the device whose current configuration is considered
* @ifnum: the desired interface
return NULL;
}
+EXPORT_SYMBOL_GPL(usb_ifnum_to_if);
/**
- * usb_altnum_to_altsetting - get the altsetting structure with a given
- * alternate setting number.
+ * usb_altnum_to_altsetting - get the altsetting structure with a given alternate setting number.
* @intf: the interface containing the altsetting in question
* @altnum: the desired alternate setting number
*
* Don't call this function unless you are bound to the intf interface
* or you have locked the device!
*/
-struct usb_host_interface *usb_altnum_to_altsetting(const struct usb_interface *intf,
- unsigned int altnum)
+struct usb_host_interface *usb_altnum_to_altsetting(
+ const struct usb_interface *intf,
+ unsigned int altnum)
{
int i;
}
return NULL;
}
+EXPORT_SYMBOL_GPL(usb_altnum_to_altsetting);
struct find_interface_arg {
int minor;
- struct usb_interface *interface;
+ struct device_driver *drv;
};
-static int __find_interface(struct device * dev, void * data)
+static int __find_interface(struct device *dev, void *data)
{
struct find_interface_arg *arg = data;
struct usb_interface *intf;
- /* can't look at usb devices, only interfaces */
- if (is_usb_device(dev))
+ if (!is_usb_interface(dev))
return 0;
+ if (dev->driver != arg->drv)
+ return 0;
intf = to_usb_interface(dev);
- if (intf->minor != -1 && intf->minor == arg->minor) {
- arg->interface = intf;
- return 1;
- }
- return 0;
+ return intf->minor == arg->minor;
}
/**
* @drv: the driver whose current configuration is considered
* @minor: the minor number of the desired device
*
- * This walks the driver device list and returns a pointer to the interface
- * with the matching minor. Note, this only works for devices that share the
- * USB major number.
+ * This walks the bus device list and returns a pointer to the interface
+ * with the matching minor and driver. Note, this only works for devices
+ * that share the USB major number.
*/
struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor)
{
struct find_interface_arg argb;
- int retval;
+ struct device *dev;
argb.minor = minor;
- argb.interface = NULL;
- /* eat the error, it will be in argb.interface */
- retval = driver_for_each_device(&drv->drvwrap.driver, NULL, &argb,
- __find_interface);
- return argb.interface;
+ argb.drv = &drv->drvwrap.driver;
+
+ dev = bus_find_device(&usb_bus_type, NULL, &argb, __find_interface);
+
+ /* Drop reference count from bus_find_device */
+ put_device(dev);
+
+ return dev ? to_usb_interface(dev) : NULL;
}
+EXPORT_SYMBOL_GPL(usb_find_interface);
/**
* usb_release_dev - free a usb device structure when all users of it are finished.
static void usb_release_dev(struct device *dev)
{
struct usb_device *udev;
+ struct usb_hcd *hcd;
udev = to_usb_device(dev);
+ hcd = bus_to_hcd(udev->bus);
usb_destroy_configuration(udev);
- usb_put_hcd(bus_to_hcd(udev->bus));
+ usb_put_hcd(hcd);
kfree(udev->product);
kfree(udev->manufacturer);
kfree(udev->serial);
}
#endif /* CONFIG_HOTPLUG */
-struct device_type usb_device_type = {
- .name = "usb_device",
- .release = usb_release_dev,
- .uevent = usb_dev_uevent,
-};
-
#ifdef CONFIG_PM
-static int ksuspend_usb_init(void)
+/* USB device Power-Management thunks.
+ * There's no need to distinguish here between quiescing a USB device
+ * and powering it down; the generic_suspend() routine takes care of
+ * it by skipping the usb_port_suspend() call for a quiesce. And for
+ * USB interfaces there's no difference at all.
+ */
+
+static int usb_dev_prepare(struct device *dev)
{
- /* This workqueue is supposed to be both freezable and
- * singlethreaded. Its job doesn't justify running on more
- * than one CPU.
- */
- ksuspend_usb_wq = create_freezeable_workqueue("ksuspend_usbd");
- if (!ksuspend_usb_wq)
- return -ENOMEM;
- return 0;
+ return 0; /* Implement eventually? */
}
-static void ksuspend_usb_cleanup(void)
+static void usb_dev_complete(struct device *dev)
{
- destroy_workqueue(ksuspend_usb_wq);
+ /* Currently used only for rebinding interfaces */
+ usb_resume(dev, PMSG_ON); /* FIXME: change to PMSG_COMPLETE */
}
+static int usb_dev_suspend(struct device *dev)
+{
+ return usb_suspend(dev, PMSG_SUSPEND);
+}
+
+static int usb_dev_resume(struct device *dev)
+{
+ return usb_resume(dev, PMSG_RESUME);
+}
+
+static int usb_dev_freeze(struct device *dev)
+{
+ return usb_suspend(dev, PMSG_FREEZE);
+}
+
+static int usb_dev_thaw(struct device *dev)
+{
+ return usb_resume(dev, PMSG_THAW);
+}
+
+static int usb_dev_poweroff(struct device *dev)
+{
+ return usb_suspend(dev, PMSG_HIBERNATE);
+}
+
+static int usb_dev_restore(struct device *dev)
+{
+ return usb_resume(dev, PMSG_RESTORE);
+}
+
+static const struct dev_pm_ops usb_device_pm_ops = {
+ .prepare = usb_dev_prepare,
+ .complete = usb_dev_complete,
+ .suspend = usb_dev_suspend,
+ .resume = usb_dev_resume,
+ .freeze = usb_dev_freeze,
+ .thaw = usb_dev_thaw,
+ .poweroff = usb_dev_poweroff,
+ .restore = usb_dev_restore,
+};
+
#else
-#define ksuspend_usb_init() 0
-#define ksuspend_usb_cleanup() do {} while (0)
+#define usb_device_pm_ops (*(struct dev_pm_ops *) NULL)
#endif /* CONFIG_PM */
+static char *usb_devnode(struct device *dev, mode_t *mode)
+{
+ struct usb_device *usb_dev;
+
+ usb_dev = to_usb_device(dev);
+ return kasprintf(GFP_KERNEL, "bus/usb/%03d/%03d",
+ usb_dev->bus->busnum, usb_dev->devnum);
+}
+
+struct device_type usb_device_type = {
+ .name = "usb_device",
+ .release = usb_release_dev,
+ .uevent = usb_dev_uevent,
+ .devnode = usb_devnode,
+ .pm = &usb_device_pm_ops,
+};
+
+
/* Returns 1 if @usb_bus is WUSB, 0 otherwise */
static unsigned usb_bus_is_wusb(struct usb_bus *bus)
{
*
* This call may not be used in a non-sleeping context.
*/
-struct usb_device *
-usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1)
+struct usb_device *usb_alloc_dev(struct usb_device *parent,
+ struct usb_bus *bus, unsigned port1)
{
struct usb_device *dev;
struct usb_hcd *usb_hcd = container_of(bus, struct usb_hcd, self);
kfree(dev);
return NULL;
}
+ /* Root hubs aren't true devices, so don't allocate HCD resources */
+ if (usb_hcd->driver->alloc_dev && parent &&
+ !usb_hcd->driver->alloc_dev(usb_hcd, dev)) {
+ usb_put_hcd(bus_to_hcd(bus));
+ kfree(dev);
+ return NULL;
+ }
device_initialize(&dev->dev);
dev->dev.bus = &usb_bus_type;
dev->dev.type = &usb_device_type;
+ dev->dev.groups = usb_device_groups;
dev->dev.dma_mask = bus->controller->dma_mask;
set_dev_node(&dev->dev, dev_to_node(bus->controller));
dev->state = USB_STATE_ATTACHED;
dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
dev->ep0.desc.bDescriptorType = USB_DT_ENDPOINT;
/* ep0 maxpacket comes later, from device descriptor */
- usb_enable_endpoint(dev, &dev->ep0);
+ usb_enable_endpoint(dev, &dev->ep0, false);
dev->can_submit = 1;
/* Save readable and stable topology id, distinguishing devices
* by location for diagnostics, tools, driver model, etc. The
* string is a path along hub ports, from the root. Each device's
* dev->devpath will be stable until USB is re-cabled, and hubs
- * are often labeled with these port numbers. The bus_id isn't
+ * are often labeled with these port numbers. The name isn't
* as stable: bus->busnum changes easily from modprobe order,
* cardbus or pci hotplugging, and so on.
*/
if (unlikely(!parent)) {
dev->devpath[0] = '0';
+ dev->route = 0;
dev->dev.parent = bus->controller;
- sprintf(&dev->dev.bus_id[0], "usb%d", bus->busnum);
+ dev_set_name(&dev->dev, "usb%d", bus->busnum);
root_hub = 1;
} else {
/* match any labeling on the hubs; it's one-based */
- if (parent->devpath[0] == '0')
+ if (parent->devpath[0] == '0') {
snprintf(dev->devpath, sizeof dev->devpath,
"%d", port1);
- else
+ /* Root ports are not counted in route string */
+ dev->route = 0;
+ } else {
snprintf(dev->devpath, sizeof dev->devpath,
"%s.%d", parent->devpath, port1);
+ /* Route string assumes hubs have less than 16 ports */
+ if (port1 < 15)
+ dev->route = parent->route +
+ (port1 << ((parent->level - 1)*4));
+ else
+ dev->route = parent->route +
+ (15 << ((parent->level - 1)*4));
+ }
dev->dev.parent = &parent->dev;
- sprintf(&dev->dev.bus_id[0], "%d-%s",
- bus->busnum, dev->devpath);
+ dev_set_name(&dev->dev, "%d-%s", bus->busnum, dev->devpath);
/* hub driver sets up TT records */
}
INIT_LIST_HEAD(&dev->filelist);
#ifdef CONFIG_PM
- mutex_init(&dev->pm_mutex);
- INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work);
dev->autosuspend_delay = usb_autosuspend_delay * HZ;
+ dev->connect_time = jiffies;
+ dev->active_duration = -jiffies;
#endif
if (root_hub) /* Root hub always ok [and always wired] */
dev->authorized = 1;
get_device(&dev->dev);
return dev;
}
+EXPORT_SYMBOL_GPL(usb_get_dev);
/**
* usb_put_dev - release a use of the usb device structure
if (dev)
put_device(&dev->dev);
}
+EXPORT_SYMBOL_GPL(usb_put_dev);
/**
* usb_get_intf - increments the reference count of the usb interface structure
get_device(&intf->dev);
return intf;
}
+EXPORT_SYMBOL_GPL(usb_get_intf);
/**
* usb_put_intf - release a use of the usb interface structure
if (intf)
put_device(&intf->dev);
}
-
+EXPORT_SYMBOL_GPL(usb_put_intf);
/* USB device locking
*
*/
/**
- * usb_lock_device_for_reset - cautiously acquire the lock for a
- * usb device structure
+ * usb_lock_device_for_reset - cautiously acquire the lock for a usb device structure
* @udev: device that's being locked
* @iface: interface bound to the driver making the request (optional)
*
* disconnect; in some drivers (such as usb-storage) the disconnect()
* or suspend() method will block waiting for a device reset to complete.
*
- * Returns a negative error code for failure, otherwise 1 or 0 to indicate
- * that the device will or will not have to be unlocked. (0 can be
- * returned when an interface is given and is BINDING, because in that
- * case the driver already owns the device lock.)
+ * Returns a negative error code for failure, otherwise 0.
*/
int usb_lock_device_for_reset(struct usb_device *udev,
const struct usb_interface *iface)
return -ENODEV;
if (udev->state == USB_STATE_SUSPENDED)
return -EHOSTUNREACH;
- if (iface) {
- switch (iface->condition) {
- case USB_INTERFACE_BINDING:
- return 0;
- case USB_INTERFACE_BOUND:
- break;
- default:
- return -EINTR;
- }
- }
+ if (iface && (iface->condition == USB_INTERFACE_UNBINDING ||
+ iface->condition == USB_INTERFACE_UNBOUND))
+ return -EINTR;
while (usb_trylock_device(udev) != 0) {
return -ENODEV;
if (udev->state == USB_STATE_SUSPENDED)
return -EHOSTUNREACH;
- if (iface && iface->condition != USB_INTERFACE_BOUND)
+ if (iface && (iface->condition == USB_INTERFACE_UNBINDING ||
+ iface->condition == USB_INTERFACE_UNBOUND))
return -EINTR;
}
- return 1;
+ return 0;
}
-
+EXPORT_SYMBOL_GPL(usb_lock_device_for_reset);
static struct usb_device *match_device(struct usb_device *dev,
u16 vendor_id, u16 product_id)
struct list_head *buslist;
struct usb_bus *bus;
struct usb_device *dev = NULL;
-
+
mutex_lock(&usb_bus_list_lock);
for (buslist = usb_bus_list.next;
- buslist != &usb_bus_list;
+ buslist != &usb_bus_list;
buslist = buslist->next) {
bus = container_of(buslist, struct usb_bus, bus_list);
if (!bus->root_hub)
{
return usb_hcd_get_frame_number(dev);
}
+EXPORT_SYMBOL_GPL(usb_get_current_frame_number);
/*-------------------------------------------------------------------*/
/*
*/
int __usb_get_extra_descriptor(char *buffer, unsigned size,
- unsigned char type, void **ptr)
+ unsigned char type, void **ptr)
{
struct usb_descriptor_header *header;
printk(KERN_ERR
"%s: bogus descriptor, type %d length %d\n",
usbcore_name,
- header->bDescriptorType,
+ header->bDescriptorType,
header->bLength);
return -1;
}
}
return -1;
}
+EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor);
/**
- * usb_buffer_alloc - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
+ * usb_alloc_coherent - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
* @dev: device the buffer will be used with
* @size: requested buffer size
* @mem_flags: affect whether allocation may block
* architectures where CPU caches are not DMA-coherent. On systems without
* bus-snooping caches, these buffers are uncached.
*
- * When the buffer is no longer used, free it with usb_buffer_free().
+ * When the buffer is no longer used, free it with usb_free_coherent().
*/
-void *usb_buffer_alloc(
- struct usb_device *dev,
- size_t size,
- gfp_t mem_flags,
- dma_addr_t *dma
-)
+void *usb_alloc_coherent(struct usb_device *dev, size_t size, gfp_t mem_flags,
+ dma_addr_t *dma)
{
if (!dev || !dev->bus)
return NULL;
return hcd_buffer_alloc(dev->bus, size, mem_flags, dma);
}
+EXPORT_SYMBOL_GPL(usb_alloc_coherent);
/**
- * usb_buffer_free - free memory allocated with usb_buffer_alloc()
+ * usb_free_coherent - free memory allocated with usb_alloc_coherent()
* @dev: device the buffer was used with
* @size: requested buffer size
* @addr: CPU address of buffer
* @dma: DMA address of buffer
*
* This reclaims an I/O buffer, letting it be reused. The memory must have
- * been allocated using usb_buffer_alloc(), and the parameters must match
+ * been allocated using usb_alloc_coherent(), and the parameters must match
* those provided in that allocation request.
*/
-void usb_buffer_free(
- struct usb_device *dev,
- size_t size,
- void *addr,
- dma_addr_t dma
-)
+void usb_free_coherent(struct usb_device *dev, size_t size, void *addr,
+ dma_addr_t dma)
{
if (!dev || !dev->bus)
return;
return;
hcd_buffer_free(dev->bus, size, addr, dma);
}
+EXPORT_SYMBOL_GPL(usb_free_coherent);
/**
* usb_buffer_map - create DMA mapping(s) for an urb
* @urb: urb whose transfer_buffer/setup_packet will be mapped
*
* Return value is either null (indicating no buffer could be mapped), or
- * the parameter. URB_NO_TRANSFER_DMA_MAP and URB_NO_SETUP_DMA_MAP are
+ * the parameter. URB_NO_TRANSFER_DMA_MAP is
* added to urb->transfer_flags if the operation succeeds. If the device
* is connected to this system through a non-DMA controller, this operation
* always succeeds.
urb->transfer_buffer, urb->transfer_buffer_length,
usb_pipein(urb->pipe)
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- if (usb_pipecontrol(urb->pipe))
- urb->setup_dma = dma_map_single(controller,
- urb->setup_packet,
- sizeof(struct usb_ctrlrequest),
- DMA_TO_DEVICE);
- // FIXME generic api broken like pci, can't report errors
- // if (urb->transfer_dma == DMA_ADDR_INVALID) return 0;
+ /* FIXME generic api broken like pci, can't report errors */
+ /* if (urb->transfer_dma == DMA_ADDR_INVALID) return 0; */
} else
urb->transfer_dma = ~0;
- urb->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP
- | URB_NO_SETUP_DMA_MAP);
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
return urb;
}
+EXPORT_SYMBOL_GPL(usb_buffer_map);
#endif /* 0 */
/* XXX DISABLED, no users currently. If you wish to re-enable this
return;
if (controller->dma_mask) {
- dma_sync_single(controller,
+ dma_sync_single_for_cpu(controller,
urb->transfer_dma, urb->transfer_buffer_length,
usb_pipein(urb->pipe)
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
if (usb_pipecontrol(urb->pipe))
- dma_sync_single(controller,
+ dma_sync_single_for_cpu(controller,
urb->setup_dma,
sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
}
}
+EXPORT_SYMBOL_GPL(usb_buffer_dmasync);
#endif
/**
urb->transfer_dma, urb->transfer_buffer_length,
usb_pipein(urb->pipe)
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- if (usb_pipecontrol(urb->pipe))
- dma_unmap_single(controller,
- urb->setup_dma,
- sizeof(struct usb_ctrlrequest),
- DMA_TO_DEVICE);
}
- urb->transfer_flags &= ~(URB_NO_TRANSFER_DMA_MAP
- | URB_NO_SETUP_DMA_MAP);
+ urb->transfer_flags &= ~URB_NO_TRANSFER_DMA_MAP;
}
+EXPORT_SYMBOL_GPL(usb_buffer_unmap);
#endif /* 0 */
/**
|| !(bus = dev->bus)
|| !(controller = bus->controller)
|| !controller->dma_mask)
- return -1;
+ return -EINVAL;
- // FIXME generic api broken like pci, can't report errors
+ /* FIXME generic api broken like pci, can't report errors */
return dma_map_sg(controller, sg, nents,
- is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE) ? : -ENOMEM;
}
+EXPORT_SYMBOL_GPL(usb_buffer_map_sg);
/* XXX DISABLED, no users currently. If you wish to re-enable this
* XXX please determine whether the sync is to transfer ownership of
|| !controller->dma_mask)
return;
- dma_sync_sg(controller, sg, n_hw_ents,
- is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ dma_sync_sg_for_cpu(controller, sg, n_hw_ents,
+ is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
+EXPORT_SYMBOL_GPL(usb_buffer_dmasync_sg);
#endif
/**
dma_unmap_sg(controller, sg, n_hw_ents,
is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
+EXPORT_SYMBOL_GPL(usb_buffer_unmap_sg);
-/* format to disable USB on kernel command line is: nousb */
-__module_param_call("", nousb, param_set_bool, param_get_bool, &nousb, 0444);
+/* To disable USB, kernel command line is 'nousb' not 'usbcore.nousb' */
+#ifdef MODULE
+module_param(nousb, bool, 0444);
+#else
+core_param(nousb, nousb, bool, 0444);
+#endif
/*
* for external read access to <nousb>
{
return nousb;
}
+EXPORT_SYMBOL_GPL(usb_disabled);
+
+/*
+ * Notifications of device and interface registration
+ */
+static int usb_bus_notify(struct notifier_block *nb, unsigned long action,
+ void *data)
+{
+ struct device *dev = data;
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ if (dev->type == &usb_device_type)
+ (void) usb_create_sysfs_dev_files(to_usb_device(dev));
+ else if (dev->type == &usb_if_device_type)
+ (void) usb_create_sysfs_intf_files(
+ to_usb_interface(dev));
+ break;
+
+ case BUS_NOTIFY_DEL_DEVICE:
+ if (dev->type == &usb_device_type)
+ usb_remove_sysfs_dev_files(to_usb_device(dev));
+ else if (dev->type == &usb_if_device_type)
+ usb_remove_sysfs_intf_files(to_usb_interface(dev));
+ break;
+ }
+ return 0;
+}
+
+static struct notifier_block usb_bus_nb = {
+ .notifier_call = usb_bus_notify,
+};
+
+struct dentry *usb_debug_root;
+EXPORT_SYMBOL_GPL(usb_debug_root);
+
+static struct dentry *usb_debug_devices;
+
+static int usb_debugfs_init(void)
+{
+ usb_debug_root = debugfs_create_dir("usb", NULL);
+ if (!usb_debug_root)
+ return -ENOENT;
+
+ usb_debug_devices = debugfs_create_file("devices", 0444,
+ usb_debug_root, NULL,
+ &usbfs_devices_fops);
+ if (!usb_debug_devices) {
+ debugfs_remove(usb_debug_root);
+ usb_debug_root = NULL;
+ return -ENOENT;
+ }
+
+ return 0;
+}
+
+static void usb_debugfs_cleanup(void)
+{
+ debugfs_remove(usb_debug_devices);
+ debugfs_remove(usb_debug_root);
+}
/*
* Init
return 0;
}
- retval = ksuspend_usb_init();
+ retval = usb_debugfs_init();
if (retval)
goto out;
+
retval = bus_register(&usb_bus_type);
- if (retval)
+ if (retval)
goto bus_register_failed;
- retval = usb_host_init();
+ retval = bus_register_notifier(&usb_bus_type, &usb_bus_nb);
if (retval)
- goto host_init_failed;
+ goto bus_notifier_failed;
retval = usb_major_init();
if (retval)
goto major_init_failed;
driver_register_failed:
usb_major_cleanup();
major_init_failed:
- usb_host_cleanup();
-host_init_failed:
+ bus_unregister_notifier(&usb_bus_type, &usb_bus_nb);
+bus_notifier_failed:
bus_unregister(&usb_bus_type);
bus_register_failed:
- ksuspend_usb_cleanup();
+ usb_debugfs_cleanup();
out:
return retval;
}
usb_deregister(&usbfs_driver);
usb_devio_cleanup();
usb_hub_cleanup();
- usb_host_cleanup();
+ bus_unregister_notifier(&usb_bus_type, &usb_bus_nb);
bus_unregister(&usb_bus_type);
- ksuspend_usb_cleanup();
+ usb_debugfs_cleanup();
}
subsys_initcall(usb_init);
module_exit(usb_exit);
-
-/*
- * USB may be built into the kernel or be built as modules.
- * These symbols are exported for device (or host controller)
- * driver modules to use.
- */
-
-EXPORT_SYMBOL(usb_disabled);
-
-EXPORT_SYMBOL_GPL(usb_get_intf);
-EXPORT_SYMBOL_GPL(usb_put_intf);
-
-EXPORT_SYMBOL(usb_put_dev);
-EXPORT_SYMBOL(usb_get_dev);
-EXPORT_SYMBOL(usb_hub_tt_clear_buffer);
-
-EXPORT_SYMBOL(usb_lock_device_for_reset);
-
-EXPORT_SYMBOL(usb_find_interface);
-EXPORT_SYMBOL(usb_ifnum_to_if);
-EXPORT_SYMBOL(usb_altnum_to_altsetting);
-
-EXPORT_SYMBOL(__usb_get_extra_descriptor);
-
-EXPORT_SYMBOL(usb_get_current_frame_number);
-
-EXPORT_SYMBOL(usb_buffer_alloc);
-EXPORT_SYMBOL(usb_buffer_free);
-
-#if 0
-EXPORT_SYMBOL(usb_buffer_map);
-EXPORT_SYMBOL(usb_buffer_dmasync);
-EXPORT_SYMBOL(usb_buffer_unmap);
-#endif
-
-EXPORT_SYMBOL(usb_buffer_map_sg);
-#if 0
-EXPORT_SYMBOL(usb_buffer_dmasync_sg);
-#endif
-EXPORT_SYMBOL(usb_buffer_unmap_sg);
-
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff