diff options
| author | Alexandre Ratchov <ratchov@cvs.openbsd.org> | 2019-03-12 08:13:51 +0000 |
|---|---|---|
| committer | Alexandre Ratchov <ratchov@cvs.openbsd.org> | 2019-03-12 08:13:51 +0000 |
| commit | 5b97b2ae6b54a314dd963e917b33b49f7f9f7b9b (patch) | |
| tree | cc674c8534fc057cfd9795b1abc8663341d3790f /sys | |
| parent | 7e0ec59dce1a06e439673a64c6b4cc908f10c5d1 (diff) | |
uhci: Fix delayed completions for isochronous transfers.
When an isochronous transfer of n frames is scheduled, the last frame
i.e. frame number (n - 1) must be set to generate an interrupt.
ok mpi
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/usb/uhci.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/dev/usb/uhci.c b/sys/dev/usb/uhci.c index 89a8c301ef1..b4f43044561 100644 --- a/sys/dev/usb/uhci.c +++ b/sys/dev/usb/uhci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uhci.c,v 1.146 2019/03/11 17:50:09 mpi Exp $ */ +/* $OpenBSD: uhci.c,v 1.147 2019/03/12 08:13:50 ratchov Exp $ */ /* $NetBSD: uhci.c,v 1.172 2003/02/23 04:19:26 simonb Exp $ */ /* $FreeBSD: src/sys/dev/usb/uhci.c,v 1.33 1999/11/17 22:33:41 n_hibma Exp $ */ @@ -2188,7 +2188,7 @@ uhci_device_isoc_start(struct usbd_xfer *xfer) #endif /* Find the last TD */ - i = ux->curframe + xfer->nframes; + i = ux->curframe + (xfer->nframes - 1); if (i >= UHCI_VFRAMELIST_COUNT) i -= UHCI_VFRAMELIST_COUNT; end = upipe->u.iso.stds[i]; |