USB_RESET_CONFIGURAT(9) USB Core APIs USB_RESET_CONFIGURAT(9)NAMEusb_reset_configuration - lightweight device reset
SYNOPSIS
int usb_reset_configuration(struct usb_device * dev);
ARGUMENTS
dev
the device whose configuration is being reset
DESCRIPTION
This issues a standard SET_CONFIGURATION request to the device using
the current configuration. The effect is to reset most USB-related
state in the device, including interface altsettings (reset to zero),
endpoint halts (cleared), and endpoint state (only for bulk and
interrupt endpoints). Other usbcore state is unchanged, including
bindings of usb device drivers to interfaces.
Because this affects multiple interfaces, avoid using this with
composite (multi-interface) devices. Instead, the driver for each
interface may use usb_set_interface on the interfaces it claims. Be
careful though; some devices don´t support the SET_INTERFACE request,
and others won´t reset all the interface state (notably endpoint
state). Resetting the whole configuration would affect other drivers´
interfaces.
The caller must own the device lock.
Returns zero on success, else a negative error code.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 USB_RESET_CONFIGURAT(9)
