usb_reset_device (9) - Linux Manuals

usb_reset_device: warn interface drivers and perform a USB port reset

Command to display usb_reset_device manual in Linux: $ man 9 usb_reset_device

NAME

usb_reset_device - warn interface drivers and perform a USB port reset

SYNOPSIS

int usb_reset_device(struct usb_device * udev);

ARGUMENTS

udev

: device to reset (not in SUSPENDED or NOTATTACHED state)

DESCRIPTION

Warns all drivers bound to registered interfaces (using their pre_reset method), performs the port reset, and then lets the drivers know that the reset is over (using their post_reset method).

RETURN

The same as for usb_reset_and_verify_device.

NOTE

The caller must own the device lock. For example, it's safe to use this from a driver probe routine after downloading new firmware. For calls that might not occur during probe, drivers should lock the device using usb_lock_device_for_reset.

If an interface is currently being probed or disconnected, we assume its driver knows how to handle resets. For all other interfaces, if the driver doesn't have pre_reset and post_reset methods then we attempt to unbind it and rebind afterward.