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Make sure we clean up any DMA maps if the open fails.

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This commit is contained in:
mycroft 1999-03-22 14:38:02 +00:00
parent 41d5307e95
commit 9e4bd01bff
1 changed files with 10 additions and 2 deletions
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12
sys/dev/isa/sbdsp.c
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@ -1,4 +1,4 @@
/* $NetBSD: sbdsp.c,v 1.97 1999/03/22 07:37:35 mycroft Exp $ */
/* $NetBSD: sbdsp.c,v 1.98 1999/03/22 14:38:02 mycroft Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -867,7 +867,7 @@ sbdsp_open(addr, flags)
int flags;
{
struct sbdsp_softc *sc = addr;
int error;
int error, state;
DPRINTF(("sbdsp_open: sc=%p\n", sc));
@ -875,6 +875,7 @@ sbdsp_open(addr, flags)
return (EBUSY);
sc->sc_open = SB_OPEN_AUDIO;
sc->sc_openflags = flags;
state = 0;
if (sc->sc_drq8 != -1) {
error = isa_dmamap_create(sc->sc_ic, sc->sc_drq8,
@ -884,6 +885,7 @@ sbdsp_open(addr, flags)
sc->sc_dev.dv_xname, sc->sc_drq8);
goto bad;
}
state |= 1;
}
if (sc->sc_drq16 != -1 && sc->sc_drq16 != sc->sc_drq8) {
error = isa_dmamap_create(sc->sc_ic, sc->sc_drq16,
@ -893,6 +895,7 @@ sbdsp_open(addr, flags)
sc->sc_dev.dv_xname, sc->sc_drq16);
goto bad;
}
state |= 2;
}
if (sbdsp_reset(sc) != 0) {
@ -917,6 +920,11 @@ sbdsp_open(addr, flags)
return (0);
bad:
if (state & 1)
isa_dmamap_destroy(sc->sc_ic, sc->sc_drq8);
if (state & 2)
isa_dmamap_destroy(sc->sc_ic, sc->sc_drq16);
sc->sc_open = SB_CLOSED;
return (error);
}