1USB_HUB_CLEAR_TT_BUF(9)          USB Core APIs         USB_HUB_CLEAR_TT_BUF(9)
2
3
4

NAME

6       usb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub
7

SYNOPSIS

9       int usb_hub_clear_tt_buffer(struct urb * urb);
10

ARGUMENTS

12       urb
13           an URB associated with the failed or incomplete split transaction
14

DESCRIPTION

16       High speed HCDs use this to tell the hub driver that some split control
17       or bulk transaction failed in a way that requires clearing internal
18       state of a transaction translator. This is normally detected (and
19       reported) from interrupt context.
20
21       It may not be possible for that hub to handle additional full (or low)
22       speed transactions until that state is fully cleared out.
23

25Kernel Hackers Manual 2.6.       November 2011         USB_HUB_CLEAR_TT_BUF(9)
Impressum