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Subject2.4.0-test11: es1371 mixer problems
2.4.0-test11 introduced a problem with the mixer device of my SB128
soundcard (es1371 driver). When I start a mixer application like
xmixer or aumix, only a small subset of the mixer devices are available.
With 2.4.0-test10, using the same .config, all devices are available.

I've looked through the test11 patch and noticed that it contains
a lot of changes like:

_IOC_DIR --> _SIOC_DIR
_IOC_READ --> _SIOC_READ
_IOC_WRITE --> _SIOC_WRITE
_IOC_SIZE --> _SIOC_SIZE

These changes are not yet applied to ac97.c and ac97_codec.c, but that
does not seem to be the problem, because after making these changes
(see patch below), the problem persists.

--
Dick Streefland //// TASKING Software BV
dick.streefland@tasking.com (@ @) http://www.tasking.com
--------------------------------oOO--(_)--OOo---------------------------
--- linux-2.4.0-test11/drivers/sound/ac97.c.orig Fri Jan 7 00:01:56 2000
+++ linux-2.4.0-test11/drivers/sound/ac97.c Thu Nov 23 00:02:31 2000
@@ -407,19 +407,19 @@
/* Read or write request. */
ret = -EINVAL;
if (_IOC_TYPE (cmd) == 'M') {
- int dir = _IOC_DIR (cmd);
+ int dir = _SIOC_DIR (cmd);
int channel = _IOC_NR (cmd);

if (channel >= 0 && channel < SOUND_MIXER_NRDEVICES) {
ret = 0;
- if (dir & _IOC_WRITE) {
+ if (dir & _SIOC_WRITE) {
int val;
if (get_user (val, (int *) arg) == 0)
ret = ac97_set_mixer (dev, channel, val);
else
ret = -EFAULT;
}
- if (ret >= 0 && (dir & _IOC_READ)) {
+ if (ret >= 0 && (dir & _SIOC_READ)) {
if (dev->last_written_OSS_values[channel]
== AC97_REGVAL_UNKNOWN)
dev->last_written_OSS_values[channel]
--- linux-2.4.0-test11/drivers/sound/ac97_codec.c.orig Tue Nov 21 21:41:02 2000
+++ linux-2.4.0-test11/drivers/sound/ac97_codec.c Thu Nov 23 00:02:45 2000
@@ -405,13 +405,13 @@
return 0;
}

- if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int))
+ if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
return -EINVAL;

if (cmd == OSS_GETVERSION)
return put_user(SOUND_VERSION, (int *)arg);

- if (_IOC_DIR(cmd) == _IOC_READ) {
+ if (_SIOC_DIR(cmd) == _SIOC_READ) {
switch (_IOC_NR(cmd)) {
case SOUND_MIXER_RECSRC: /* give them the current record source */
if (!codec->recmask_io) {
@@ -451,7 +451,7 @@
return put_user(val, (int *)arg);
}

- if (_IOC_DIR(cmd) == (_IOC_WRITE|_IOC_READ)) {
+ if (_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) {
codec->modcnt++;
if (get_user(val, (int *)arg))
return -EFAULT;
-
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