usb/core/message.c

649  * configuration or interface alt setting is selected.
771  * Device (USB_DT_DEVICE) and configuration descriptors (USB_DT_CONFIG)
825  * Strings may be referenced in device, configuration, interface, or other
1499  * Within any given configuration, each interface may have several
1511  * allocate bandwidth early, when a configuration is chosen.
1669  * @dev: the device whose configuration is being reset
1672  * the current configuration.  The effect is to reset most USB-related
1683  * configuration would affect other drivers' interfaces.
1711 	/* Disable LPM, and re-enable it once the configuration is reset, so
1952  * @dev: the device whose configuration is being updated
1953  * @configuration: the configuration being chosen.
1959  * configuration.
1961  * @configuration is the value of the configuration to be installed.
1962  * According to the USB spec (e.g. section 9.1.1.5), configuration values
1965  * configuration values.  To help manage such devices, this routine will
1966  * accept @configuration = -1 as indicating the device should be put in
1971  * the default configuration is limited to using 100mA of bus power,
1974  * non-default device configuration.  Other device modes may also be
1975  * reflected as configuration options, such as whether two ISDN
1992  * in the original device configuration has been destroyed, and each one
1993  * in the new configuration has been probed by all relevant usb device
1996 int usb_set_configuration(struct usb_device *dev, int configuration)
2004 	if (dev->authorized == 0 || configuration == -1)
2005 		configuration = 0;
2009 					configuration) {
2015 	if ((!cp && configuration != 0))
2018 	/* The USB spec says configuration 0 means unconfigured.
2019 	 * But if a device includes a configuration numbered 0,
2023 	if (cp && configuration == 0)
2054 					configuration, -i);
2072 	 * configuration.  Remove endpoints from the schedule if we're dropping
2073 	 * this configuration to set configuration 0.  After this point, the
2078 	/* Disable LPM, and re-enable it once the new configuration is
2133 					configuration, ifnum);
2146 				dev->devpath, configuration, ifnum);
2152 				   configuration, 0, NULL, 0,
2207 			dev_name(&intf->dev), configuration,
2253 /* Cancel pending Set-Config requests for a device whose configuration
2270  * @udev: the device whose configuration is being updated
2271  * @config: the configuration being chosen.