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Revert change on advice of author.

Browse Source 
Submitted by:	Sujal Patel <smpatel@wam.umd.edu>
This commit is contained in:
Jordan K. Hubbard 1995-03-05 04:01:29 +00:00
parent 21a3970b05
commit 7a31e4deeb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=6900
1 changed files with 28 additions and 4 deletions
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32
sys/i386/isa/sound/soundcard.c
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* soundcard.c,v 1.20 1994/10/01 02:17:14 swallace Exp
* $Id: soundcard.c,v 1.21 1995/02/13 22:49:06 jkh Exp $
*/
#include "sound_config.h"
@ -54,6 +54,7 @@ static int soundcards_installed = 0; /* Number of installed
static int soundcard_configured = 0;
static struct fileinfo files[SND_NDEVS];
struct selinfo selinfo[SND_NDEVS >> 4];
int sndprobe (struct isa_device *dev);
int sndattach (struct isa_device *dev);
@ -62,7 +63,7 @@ int sndclose (dev_t dev, int flags);
int sndioctl (dev_t dev, int cmd, caddr_t arg, int mode);
int sndread (int dev, struct uio *uio);
int sndwrite (int dev, struct uio *uio);
int sndselect (int dev, int rw);
int sndselect (int dev, int rw, struct proc *p);
static void sound_mem_init(void);
unsigned
@ -122,6 +123,9 @@ sndopen (dev_t dev, int flags)
else if (flags & FWRITE)
files[dev].mode = OPEN_WRITE;
selinfo[dev >> 4].si_pid = 0;
selinfo[dev >> 4].si_flags = 0;
FIX_RETURN(sound_open_sw (dev, &files[dev]));
}
@ -144,13 +148,33 @@ sndioctl (dev_t dev, int cmd, caddr_t arg, int mode)
}
int
sndselect (int dev, int rw)
sndselect (int dev, int rw, struct proc *p)
{
int r,s;
dev = minor (dev);
DEB (printk ("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
FIX_RETURN (0);
r = 0;
DISABLE_INTR(s);
switch (rw) {
case FREAD: /* record */
if(DMAbuf_input_ready(dev >> 4))
r = 1;
else
selrecord(p, &selinfo[dev >> 4]);
break;
case FWRITE: /* play */
if(DMAbuf_output_ready(dev >> 4))
r = 1;
else
selrecord(p, &selinfo[dev >> 4]);
break;
}
RESTORE_INTR(s);
return r;
}
static unsigned short