usb_hcd_giveback_urb

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

usb_hcd_giveback_urb - return URB from HCD to device driver

SYNOPSIS

void usb_hcd_giveback_urb(struct usb_hcd * hcd, struct urb * urb, int status);

ARGUMENTS

hcd

host controller returning the URB

urb

urb being returned to the USB device driver.

status

completion status code for the URB.

CONTEXT

in_interrupt

DESCRIPTION

This hands the URB from HCD to its USB device driver, using its completion function. The HCD has freed all per-urb resources (and is done using urb->hcpriv). It also released all HCD locks; the device driver won't cause problems if it frees, modifies, or resubmits this URB.

If urb was unlinked, the value of status will be overridden by urb->unlinked. Erroneous short transfers are detected in case the HCD hasn't checked for them.