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usb_hcd_giveback_urb
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
usb_hcd_giveback_urb - return URB from HCD to device driverSYNOPSIS
- 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.
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