usb_hcd_giveback_urb
Prev Chapter 6. Host Controller APIs Next

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.

Prev Up Next
usb_hcd_unlink_urb_from_ep Home usb_hcd_resume_root_hub