1USB_RESET_CONFIGURAT(9)          USB Core APIs         USB_RESET_CONFIGURAT(9)
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NAME

6       usb_reset_configuration - lightweight device reset
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SYNOPSIS

9       int usb_reset_configuration(struct usb_device * dev);
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ARGUMENTS

12       dev
13           the device whose configuration is being reset
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DESCRIPTION

16       This issues a standard SET_CONFIGURATION request to the device using
17       the current configuration. The effect is to reset most USB-related
18       state in the device, including interface altsettings (reset to zero),
19       endpoint halts (cleared), and endpoint state (only for bulk and
20       interrupt endpoints). Other usbcore state is unchanged, including
21       bindings of usb device drivers to interfaces.
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23       Because this affects multiple interfaces, avoid using this with
24       composite (multi-interface) devices. Instead, the driver for each
25       interface may use usb_set_interface on the interfaces it claims. Be
26       careful though; some devices don't support the SET_INTERFACE request,
27       and others won't reset all the interface state (notably endpoint
28       state). Resetting the whole configuration would affect other drivers'
29       interfaces.
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31       The caller must own the device lock.
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RETURN

34       Zero on success, else a negative error code.
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37Kernel Hackers Manual 3.10         June 2019           USB_RESET_CONFIGURAT(9)
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