Don't mix BUS_DMASYNC_PREREAD and BUS_DMASYNC_POSTWRITE.
Suggested by <bouyer>, fixes PR kern/42662
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@ -1,4 +1,4 @@
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/* $NetBSD: iop.c,v 1.77 2009/10/21 21:12:05 rmind Exp $ */
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/* $NetBSD: iop.c,v 1.78 2010/02/19 12:36:15 asau Exp $ */
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/*-
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* Copyright (c) 2000, 2001, 2002, 2007 The NetBSD Foundation, Inc.
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@ -34,7 +34,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: iop.c,v 1.77 2009/10/21 21:12:05 rmind Exp $");
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__KERNEL_RCSID(0, "$NetBSD: iop.c,v 1.78 2010/02/19 12:36:15 asau Exp $");
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#include "iop.h"
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@ -928,7 +928,7 @@ iop_status_get(struct iop_softc *sc, int nosleep)
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BUS_DMASYNC_PREWRITE);
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memset(st, 0, sizeof(*st));
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bus_dmamap_sync(sc->sc_dmat, sc->sc_scr_dmamap, 0, sizeof(*st),
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BUS_DMASYNC_PREREAD|BUS_DMASYNC_POSTWRITE);
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BUS_DMASYNC_POSTWRITE);
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if ((rv = iop_post(sc, (u_int32_t *)&mf)) != 0)
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return (rv);
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@ -993,7 +993,7 @@ iop_ofifo_init(struct iop_softc *sc)
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BUS_DMASYNC_PREWRITE);
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*sw = 0;
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bus_dmamap_sync(sc->sc_dmat, sc->sc_scr_dmamap, 0, sizeof(*sw),
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BUS_DMASYNC_PREREAD|BUS_DMASYNC_POSTWRITE);
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BUS_DMASYNC_POSTWRITE);
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if ((rv = iop_post(sc, mb)) != 0)
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return (rv);
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