diff options
| author |   dlg <dlg@openbsd.org> | 2004-08-11 04:23:15 +0000 |
|---|---|---|
| committer | dlg <dlg@openbsd.org> | 2004-08-11 04:23:15 +0000 |
| commit | 1f4a60f9e549f0401a7d6bac4ed9457c2d36367c (patch) | |
| tree | fd0d24cca4a95d358d4259e5611241971e4797d9 /sys/dev/usb/uhci.c | |
| parent | from netbsd, uhci.c revision 1.176 (diff) | |
| download | wireguard-openbsd-1f4a60f9e549f0401a7d6bac4ed9457c2d36367c.tar.xz wireguard-openbsd-1f4a60f9e549f0401a7d6bac4ed9457c2d36367c.zip | |
from netbsd, uhci.c revision 1.178
Interrupt descriptors might become invalid while being processed in
uhci_check_intr - so remember their next pointer before calling it.
Diffstat (limited to 'sys/dev/usb/uhci.c')
| -rw-r--r-- | sys/dev/usb/uhci.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sys/dev/usb/uhci.c b/sys/dev/usb/uhci.c index 2aed4158471..ae7cdd382f2 100644 --- a/sys/dev/usb/uhci.c +++ b/sys/dev/usb/uhci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uhci.c,v 1.33 2004/08/11 04:21:44 dlg Exp $ */ +/* $OpenBSD: uhci.c,v 1.34 2004/08/11 04:23:15 dlg 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 $ */ @@ -1259,7 +1259,7 @@ void uhci_softintr(void *v) { uhci_softc_t *sc = v; - uhci_intr_info_t *ii; + uhci_intr_info_t *ii, *nextii; DPRINTFN(10,("%s: uhci_softintr (%d)\n", USBDEVNAME(sc->sc_bus.bdev), sc->sc_bus.intr_context)); @@ -1277,8 +1277,10 @@ uhci_softintr(void *v) * We scan all interrupt descriptors to see if any have * completed. */ - for (ii = LIST_FIRST(&sc->sc_intrhead); ii; ii = LIST_NEXT(ii, list)) + for (ii = LIST_FIRST(&sc->sc_intrhead); ii; ii = nextii) { + nextii = LIST_NEXT(ii, list); uhci_check_intr(sc, ii); + } #ifdef USB_USE_SOFTINTR if (sc->sc_softwake) { |