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usb_reset_configuration(9) - phpMan

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USB_RESET_CONFIGURAT(9)                   USB Core APIs                   USB_RESET_CONFIGURAT(9)

       usb_reset_configuration - lightweight device reset

       int usb_reset_configuration(struct usb_device * dev);

           the device whose configuration is being reset

       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.

       Zero on success, else a negative error code.

Kernel Hackers Manual 4.8.                 January 2017                   USB_RESET_CONFIGURAT(9)

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