diff options
| author | Marcus Glocker <mglocker@cvs.openbsd.org> | 2020-12-24 14:11:39 +0000 |
|---|---|---|
| committer | Marcus Glocker <mglocker@cvs.openbsd.org> | 2020-12-24 14:11:39 +0000 |
| commit | f9799f5bcfdecb0bb8b977e1fb6d611ca0146472 (patch) | |
| tree | 32d2aba42898f5e0619b0d5a1b0361f5468839e7 /sys/dev/usb/xhcivar.h | |
| parent | 2d4daa46fbbbee2808b6881d3a96f45eb2249f26 (diff) | |
Do proper accounting of zero length TDs. Currently a specific number
of zero length TDs can cause our free TRBs to run out, causing xhci(4)
to return USBD_NOMEM to the USB stack.
The issue was reported by
Jonathon Fletcher <jonathon.fletcher () gmail ! com> -- Thanks!
Reviewed/suggestions by patrick@.
ok mpi@
Diffstat (limited to 'sys/dev/usb/xhcivar.h')
| -rw-r--r-- | sys/dev/usb/xhcivar.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/usb/xhcivar.h b/sys/dev/usb/xhcivar.h index dc2e86da335..533032ae9c7 100644 --- a/sys/dev/usb/xhcivar.h +++ b/sys/dev/usb/xhcivar.h @@ -1,4 +1,4 @@ -/* $OpenBSD: xhcivar.h,v 1.11 2019/10/06 17:30:00 mpi Exp $ */ +/* $OpenBSD: xhcivar.h,v 1.12 2020/12/24 14:11:38 mglocker Exp $ */ /* * Copyright (c) 2014 Martin Pieuchot @@ -40,6 +40,7 @@ struct xhci_xfer { struct usbd_xfer xfer; int index; /* Index of the last TRB */ size_t ntrb; /* Number of associated TRBs */ + size_t zerotd; /* Is zero len TD required? */ }; struct xhci_ring { |