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de28e469da
The usb_get_device_descriptor() routine reads the device descriptor from the udev device and stores it directly in udev->descriptor. This interface is error prone, because the USB subsystem expects in-memory copies of a device's descriptors to be immutable once the device has been initialized. The interface is changed so that the device descriptor is left in a kmalloc-ed buffer, not copied into the usb_device structure. A pointer to the buffer is returned to the caller, who is then responsible for kfree-ing it. The corresponding changes needed in the various callers are fairly small. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/d0111bb6-56c1-4f90-adf2-6cfe152f6561@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
224 lines
7.5 KiB
C
224 lines
7.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Released under the GPLv2 only.
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*/
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#include <linux/pm.h>
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#include <linux/acpi.h>
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struct usb_hub_descriptor;
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struct usb_dev_state;
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/* 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 void 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_update_wireless_status_attr(struct usb_interface *intf);
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extern int usb_create_ep_devs(struct device *parent,
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struct usb_host_endpoint *endpoint,
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struct usb_device *udev);
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extern void usb_remove_ep_devs(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, bool reset_toggle);
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extern void usb_enable_interface(struct usb_device *dev,
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struct usb_interface *intf, bool reset_toggles);
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extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
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bool reset_hardware);
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extern void usb_disable_interface(struct usb_device *dev,
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struct usb_interface *intf, bool reset_hardware);
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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_deauthorize_interface(struct usb_interface *);
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extern void usb_authorize_interface(struct usb_interface *);
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extern void usb_detect_quirks(struct usb_device *udev);
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extern void usb_detect_interface_quirks(struct usb_device *udev);
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extern void usb_release_quirk_list(void);
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extern bool usb_endpoint_is_ignored(struct usb_device *udev,
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struct usb_host_interface *intf,
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struct usb_endpoint_descriptor *epd);
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extern int usb_remove_device(struct usb_device *udev);
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extern struct usb_device_descriptor *usb_get_device_descriptor(
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struct usb_device *udev);
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extern int usb_set_isoch_delay(struct usb_device *dev);
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extern int usb_get_bos_descriptor(struct usb_device *dev);
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extern void usb_release_bos_descriptor(struct usb_device *dev);
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extern int usb_set_configuration(struct usb_device *dev, int configuration);
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extern int usb_choose_configuration(struct usb_device *udev);
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extern int usb_generic_driver_probe(struct usb_device *udev);
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extern void usb_generic_driver_disconnect(struct usb_device *udev);
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extern int usb_generic_driver_suspend(struct usb_device *udev,
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pm_message_t msg);
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extern int usb_generic_driver_resume(struct usb_device *udev,
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pm_message_t msg);
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static inline unsigned usb_get_max_power(struct usb_device *udev,
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struct usb_host_config *c)
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{
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/* SuperSpeed power is in 8 mA units; others are in 2 mA units */
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unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2);
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return c->desc.bMaxPower * mul;
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}
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extern void usb_kick_hub_wq(struct usb_device *dev);
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extern int usb_match_one_id_intf(struct usb_device *dev,
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struct usb_host_interface *intf,
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const struct usb_device_id *id);
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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 const struct usb_device_id *usb_device_match_id(struct usb_device *udev,
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const struct usb_device_id *id);
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extern bool usb_driver_applicable(struct usb_device *udev,
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struct usb_device_driver *udrv);
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extern void usb_forced_unbind_intf(struct usb_interface *intf);
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extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
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extern void usb_hub_release_all_ports(struct usb_device *hdev,
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struct usb_dev_state *owner);
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extern bool usb_device_is_owned(struct usb_device *udev);
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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_device_supports_lpm(struct usb_device *udev);
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extern int usb_port_disable(struct usb_device *udev);
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#ifdef CONFIG_PM
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extern int usb_suspend(struct device *dev, pm_message_t msg);
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extern int usb_resume(struct device *dev, pm_message_t msg);
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extern int usb_resume_complete(struct device *dev);
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extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
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extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
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extern void usb_autosuspend_device(struct usb_device *udev);
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extern int usb_autoresume_device(struct usb_device *udev);
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extern int usb_remote_wakeup(struct usb_device *dev);
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extern int usb_runtime_suspend(struct device *dev);
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extern int usb_runtime_resume(struct device *dev);
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extern int usb_runtime_idle(struct device *dev);
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extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev);
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extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev);
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extern void usbfs_notify_suspend(struct usb_device *udev);
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extern void usbfs_notify_resume(struct usb_device *udev);
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#else
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static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
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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, pm_message_t msg)
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{
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return 0;
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}
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#define usb_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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static inline int usb_enable_usb2_hardware_lpm(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_disable_usb2_hardware_lpm(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 const struct class usbmisc_class;
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extern const struct bus_type usb_bus_type;
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extern struct mutex usb_port_peer_mutex;
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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 device_type usb_ep_device_type;
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extern struct device_type usb_port_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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static inline int is_usb_interface(const struct device *dev)
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{
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return dev->type == &usb_if_device_type;
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}
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static inline int is_usb_endpoint(const struct device *dev)
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{
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return dev->type == &usb_ep_device_type;
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}
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static inline int is_usb_port(const struct device *dev)
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{
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return dev->type == &usb_port_device_type;
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}
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static inline int is_root_hub(struct usb_device *udev)
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{
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return (udev->parent == NULL);
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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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/* for labeling diagnostics */
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extern const char *usbcore_name;
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/* sysfs stuff */
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extern const struct attribute_group *usb_device_groups[];
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extern const struct attribute_group *usb_interface_groups[];
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/* usbfs stuff */
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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 int usb_devio_init(void);
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extern void usb_devio_cleanup(void);
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/*
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* Firmware specific cookie identifying a port's location. '0' == no location
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* data available
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*/
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typedef u32 usb_port_location_t;
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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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extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
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struct usb_hub_descriptor *desc);
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#ifdef CONFIG_ACPI
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extern int usb_acpi_register(void);
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extern void usb_acpi_unregister(void);
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extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
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int port1);
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#else
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static inline int usb_acpi_register(void) { return 0; };
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static inline void usb_acpi_unregister(void) { };
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#endif
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