diff options
| author | Brad Smith <brad@cvs.openbsd.org> | 2006-05-21 02:11:55 +0000 |
|---|---|---|
| committer | Brad Smith <brad@cvs.openbsd.org> | 2006-05-21 02:11:55 +0000 |
| commit | cbefdc5e9c5ee5cdf995b97f60bb72017472b9c9 (patch) | |
| tree | 1a9d8244cb427ad1b1d03600bb8db6be824bd2f4 /sys/arch/alpha | |
| parent | 51915a3be1a95b34cde12d2e71dd601b28bad87d (diff) | |
Check for stale flags in the DMA map.
From thorpej NetBSD
Diffstat (limited to 'sys/arch/alpha')
| -rw-r--r-- | sys/arch/alpha/dev/bus_dma.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/arch/alpha/dev/bus_dma.c b/sys/arch/alpha/dev/bus_dma.c index 989d3b6ddf6..ee28123fb59 100644 --- a/sys/arch/alpha/dev/bus_dma.c +++ b/sys/arch/alpha/dev/bus_dma.c @@ -1,4 +1,4 @@ -/* $OpenBSD: bus_dma.c,v 1.20 2006/05/21 02:00:08 brad Exp $ */ +/* $OpenBSD: bus_dma.c,v 1.21 2006/05/21 02:11:54 brad Exp $ */ /* $NetBSD: bus_dma.c,v 1.40 2000/07/17 04:47:56 thorpej Exp $ */ /*- @@ -259,6 +259,7 @@ _bus_dmamap_load_direct(t, map, buf, buflen, p, flags) */ map->dm_mapsize = 0; map->dm_nsegs = 0; + KASSERT((map->_dm_flags & (BUS_DMA_READ|BUS_DMA_WRITE)) == 0); if (buflen > map->_dm_size) return (EINVAL); @@ -299,6 +300,7 @@ _bus_dmamap_load_mbuf_direct(t, map, m0, flags) */ map->dm_mapsize = 0; map->dm_nsegs = 0; + KASSERT((map->_dm_flags & (BUS_DMA_READ|BUS_DMA_WRITE)) == 0); #ifdef DIAGNOSTIC if ((m0->m_flags & M_PKTHDR) == 0) @@ -353,6 +355,7 @@ _bus_dmamap_load_uio_direct(t, map, uio, flags) */ map->dm_mapsize = 0; map->dm_nsegs = 0; + KASSERT((map->_dm_flags & (BUS_DMA_READ|BUS_DMA_WRITE)) == 0); resid = uio->uio_resid; iov = uio->uio_iov; @@ -429,6 +432,7 @@ _bus_dmamap_unload(t, map) map->dm_mapsize = 0; map->dm_nsegs = 0; map->_dm_window = NULL; + map->_dm_flags &= ~(BUS_DMA_READ|BUS_DMA_WRITE); } /* |