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| author | smpatel <smpatel@FreeBSD.org> | 1996-04-08 19:40:57 +0000 |
|---|---|---|
| committer | smpatel <smpatel@FreeBSD.org> | 1996-04-08 19:40:57 +0000 |
| commit | 9739208301bc36d96e6ef8313564ffab2b3f9672 (patch) | |
| tree | 04abd4e981231946f91239e5c13892fc0164eae0 /sys/i386/isa/wt.c | |
| parent | 6b740ac6e985dfbea2d7e3601a151a088b4bb8c0 (diff) | |
| download | FreeBSD-src-9739208301bc36d96e6ef8313564ffab2b3f9672.zip FreeBSD-src-9739208301bc36d96e6ef8313564ffab2b3f9672.tar.gz | |
Update drivers to use isa_dma_acquire() and isa_dma_release()
Reviewed by: bde
Diffstat (limited to 'sys/i386/isa/wt.c')
| -rw-r--r-- | sys/i386/isa/wt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/i386/isa/wt.c b/sys/i386/isa/wt.c index 26b3af6..dc4e6c9 100644 --- a/sys/i386/isa/wt.c +++ b/sys/i386/isa/wt.c @@ -20,7 +20,7 @@ * the original CMU copyright notice. * * Version 1.3, Thu Nov 11 12:09:13 MSK 1993 - * $Id: wt.c,v 1.30 1996/02/22 00:31:48 joerg Exp $ + * $Id: wt.c,v 1.31 1996/03/28 14:28:55 scrappy Exp $ * */ @@ -392,6 +392,9 @@ wtopen (dev_t dev, int flag, int fmt, struct proc *p) if (! t->buf) return (EAGAIN); + if (isa_dma_acquire(t->chan)) + return(EBUSY); + t->flags = TPINUSE; kdc_wt[u].kdc_state = DC_BUSY; @@ -445,6 +448,7 @@ done: t->flags &= TPREW | TPRMARK | TPSTART | TPTIMER; kdc_wt[u].kdc_state = DC_IDLE; free (t->buf, M_TEMP); + isa_dma_release(t->chan); return (0); } |
