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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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93993a0a3e
These USB API functions will do the full authorization/deauthorization to be used for a device. When authorized we effectively allow a configuration to be set. Reverse that when deauthorized. Effectively this means that we have to clean all the configuration descriptors on deauthorize and reload them when we authorized. We could do without throwing them out for wired devices, but for wireless, we can read them only after authenticating, and thus, when authorizing an authenticated device we would need to read them. So to simplify, always release them on deauthorize(), re-read them on authorize(). Also fix leak reported by Ragner Magalhaes; in usb_deauthorize_device(), bNumConfigurations was being set to zero before the for loop, and thus the different raw descriptors where never being freed. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
165 lines
4.9 KiB
C
165 lines
4.9 KiB
C
/* Functions local to drivers/usb/core/ */
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extern int usb_create_sysfs_dev_files (struct usb_device *dev);
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extern void usb_remove_sysfs_dev_files (struct usb_device *dev);
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extern int usb_create_sysfs_intf_files (struct usb_interface *intf);
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extern void usb_remove_sysfs_intf_files (struct usb_interface *intf);
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extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint,
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struct usb_device *udev);
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extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint);
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extern void usb_enable_endpoint(struct usb_device *dev,
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struct usb_host_endpoint *ep);
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extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr);
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extern void usb_disable_interface (struct usb_device *dev,
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struct usb_interface *intf);
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extern void usb_release_interface_cache(struct kref *ref);
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extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
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extern int usb_deauthorize_device (struct usb_device *);
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extern int usb_authorize_device (struct usb_device *);
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extern void usb_detect_quirks(struct usb_device *udev);
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extern int usb_get_device_descriptor(struct usb_device *dev,
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unsigned int size);
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extern char *usb_cache_string(struct usb_device *udev, int index);
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extern int usb_set_configuration(struct usb_device *dev, int configuration);
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extern int choose_configuration(struct usb_device *udev);
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extern void usb_kick_khubd(struct usb_device *dev);
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extern int usb_match_device(struct usb_device *dev,
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const struct usb_device_id *id);
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extern int usb_hub_init(void);
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extern void usb_hub_cleanup(void);
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extern int usb_major_init(void);
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extern void usb_major_cleanup(void);
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extern int usb_host_init(void);
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extern void usb_host_cleanup(void);
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#ifdef CONFIG_PM
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extern void usb_autosuspend_work(struct work_struct *work);
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extern int usb_port_suspend(struct usb_device *dev);
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extern int usb_port_resume(struct usb_device *dev);
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extern int usb_external_suspend_device(struct usb_device *udev,
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pm_message_t msg);
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extern int usb_external_resume_device(struct usb_device *udev);
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static inline void usb_pm_lock(struct usb_device *udev)
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{
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mutex_lock_nested(&udev->pm_mutex, udev->level);
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}
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static inline void usb_pm_unlock(struct usb_device *udev)
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{
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mutex_unlock(&udev->pm_mutex);
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}
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#else
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static inline int usb_port_suspend(struct usb_device *udev)
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{
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return 0;
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}
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static inline int usb_port_resume(struct usb_device *udev)
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{
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return 0;
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}
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static inline void usb_pm_lock(struct usb_device *udev) {}
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static inline void usb_pm_unlock(struct usb_device *udev) {}
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#endif
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#ifdef CONFIG_USB_SUSPEND
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extern void usb_autosuspend_device(struct usb_device *udev);
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extern void usb_try_autosuspend_device(struct usb_device *udev);
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extern int usb_autoresume_device(struct usb_device *udev);
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#else
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#define usb_autosuspend_device(udev) do {} while (0)
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#define usb_try_autosuspend_device(udev) do {} while (0)
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static inline int usb_autoresume_device(struct usb_device *udev)
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{
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return 0;
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}
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#endif
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extern struct workqueue_struct *ksuspend_usb_wq;
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extern struct bus_type usb_bus_type;
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extern struct device_type usb_device_type;
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extern struct device_type usb_if_device_type;
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extern struct usb_device_driver usb_generic_driver;
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static inline int is_usb_device(const struct device *dev)
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{
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return dev->type == &usb_device_type;
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}
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/* Do the same for device drivers and interface drivers. */
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static inline int is_usb_device_driver(struct device_driver *drv)
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{
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return container_of(drv, struct usbdrv_wrap, driver)->
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for_devices;
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}
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/* Interfaces and their "power state" are owned by usbcore */
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static inline void mark_active(struct usb_interface *f)
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{
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f->is_active = 1;
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f->dev.power.power_state.event = PM_EVENT_ON;
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}
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static inline void mark_quiesced(struct usb_interface *f)
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{
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f->is_active = 0;
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f->dev.power.power_state.event = PM_EVENT_SUSPEND;
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}
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static inline int is_active(const struct usb_interface *f)
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{
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return f->is_active;
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}
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/* for labeling diagnostics */
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extern const char *usbcore_name;
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/* usbfs stuff */
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extern struct mutex usbfs_mutex;
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extern struct usb_driver usbfs_driver;
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extern const struct file_operations usbfs_devices_fops;
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extern const struct file_operations usbdev_file_operations;
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extern void usbfs_conn_disc_event(void);
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extern int usb_devio_init(void);
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extern void usb_devio_cleanup(void);
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struct dev_state {
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struct list_head list; /* state list */
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struct usb_device *dev;
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struct file *file;
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spinlock_t lock; /* protects the async urb lists */
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struct list_head async_pending;
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struct list_head async_completed;
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wait_queue_head_t wait; /* wake up if a request completed */
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unsigned int discsignr;
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struct pid *disc_pid;
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uid_t disc_uid, disc_euid;
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void __user *disccontext;
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unsigned long ifclaimed;
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u32 secid;
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};
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/* internal notify stuff */
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extern void usb_notify_add_device(struct usb_device *udev);
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extern void usb_notify_remove_device(struct usb_device *udev);
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extern void usb_notify_add_bus(struct usb_bus *ubus);
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extern void usb_notify_remove_bus(struct usb_bus *ubus);
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