1USB_HUB_CLEAR_TT_BUF(9)          USB Core APIs         USB_HUB_CLEAR_TT_BUF(9)
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NAME

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

9       int usb_hub_clear_tt_buffer(struct urb * urb);
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ARGUMENTS

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

25       0 if successful. A negative error code otherwise.
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28Kernel Hackers Manual 3.10         June 2019           USB_HUB_CLEAR_TT_BUF(9)
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