USB_HUB_CLEAR_TT_BUF(9) USB Core APIs USB_HUB_CLEAR_TT_BUF(9)NAMEusb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub
SYNOPSIS
int usb_hub_clear_tt_buffer(struct urb * urb);
ARGUMENTS
urb
an URB associated with the failed or incomplete split transaction
DESCRIPTION
High speed HCDs use this to tell the hub driver that some split control
or bulk transaction failed in a way that requires clearing internal
state of a transaction translator. This is normally detected (and
reported) from interrupt context.
It may not be possible for that hub to handle additional full (or low)
speed transactions until that state is fully cleared out.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 USB_HUB_CLEAR_TT_BUF(9)