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When a recording interrupt happened in the middle of audio_read(), 

changes to cb->used by audio_rint() could be overwritten by audio_read().
This commit is contained in:
gson 2002-07-10 02:25:49 +00:00
parent 17162d7b0f
commit 94addcb364
1 changed files with 3 additions and 4 deletions
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7
sys/dev/audio.c
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@ -1,4 +1,4 @@
/* $NetBSD: audio.c,v 1.158 2002/06/23 01:36:07 gmcgarry Exp $ */
/* $NetBSD: audio.c,v 1.159 2002/07/10 02:25:49 gson Exp $ */
/*
* Copyright (c) 1991-1993 Regents of the University of California.
@ -61,7 +61,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.158 2002/06/23 01:36:07 gmcgarry Exp $");
__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.159 2002/07/10 02:25:49 gson Exp $");
#include "audio.h"
#if NAUDIO > 0
@ -1263,13 +1263,12 @@ audio_read(struct audio_softc *sc, struct uio *uio, int ioflag)
* The format of data in sc_rconvbuffer is
* [sample_rate, hw_encoding, hw_precision, channels]
*/
used -= cc;
outp += cc;
if (outp >= cb->end)
outp -= cb->end - cb->start;
s = splaudio();
cb->outp = outp;
cb->used = used;
cb->used -= cc;
cb->copying = 0;
splx(s);