Hi Jaroslav!

here we go:
I added some printk's to these routines:
----------------------------------------------------------------------
int snd_ctl_add(snd_card_t * card, snd_kcontrol_t * kcontrol)
{
       snd_ctl_elem_id_t id;
       unsigned int idx;
       unsigned int dummy;

       printk ("_snd_ctl_add called (/sound/core/control.c)\n");
       snd_runtime_check(card != NULL && kcontrol != NULL, return -EINVAL);
       snd_assert(kcontrol->info != NULL, return -EINVAL);
       id = kcontrol->id;
       printk ("_snd_ctl_add:: kcontrol->id == %d\n",id);
   down_write(&card->controls_rwsem);
       if (_ctl_find_id(card, &id)) {
         printk ("bug here id=%d %d\n",id,-EBUSY);
               up_write(&card->controls_rwsem);
       snd_ctl_free_one(kcontrol);
               return -EBUSY;
               }
       if (card->last_numid > 0x80000000 && card->last_numid +
kcontrol->count < 0x80000000) {
               up_write(&card->controls_rwsem);
               snd_ctl_free_one(kcontrol);
               return -ENOMEM; /* FIXME: find a hole */
       }
       list_add_tail(&kcontrol->list, &card->controls);
          card->controls_count += kcontrol->count;
       kcontrol->id.numid = card->last_numid + 1;
       card->last_numid += kcontrol->count;
       up_write(&card->controls_rwsem);
       for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++)
               snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id);
   return 0;
}
----------------------------------------------------------------------
static snd_kcontrol_t *_ctl_find_id(snd_card_t * card, snd_ctl_elem_id_t
*id)
{
       struct list_head *list;
       snd_kcontrol_t *kctl;

       printk ("_ctl_find_id called (/sound/core/control.c)\n");
       snd_runtime_check(card != NULL && id != NULL, return NULL);
       if (id->numid != 0) {
         printk ("return _ctl_find_numid, id->numid != 0 , but
id->numid is = %X\n",id->numid);
               return _ctl_find_numid(card, id->numid);
       }
       list_for_each(list, &card->controls) {
         printk ("list_for_each(list, &card->controls)-loop start\n");
               kctl = snd_kcontrol(list);
               printk ("kctl->id.face = %X, id->iface =
%X\n",kctl->id.iface,id->iface);
               if (kctl->id.iface != id->iface) {
                       continue;
               }
               printk ("kctl->id.device = %X id->device=
%X\n",kctl->id.device,id->device);
               if (kctl->id.device != id->device) {
                 printk ("id.device not ok\n");
                       continue;
               }
               printk ("kctl->id.subdevice = %X
id->subdevice=%X\n",kctl->id.subdevice,id->subdevice);
               if (kctl->id.subdevice != id->subdevice) {
                       continue;
               }
               printk ("kctl->id.name = '%s' id->name=
'%s'\n",kctl->id.name,id->name);
               if (strncmp(kctl->id.name, id->name,
sizeof(kctl->id.name))) {
                       continue;
               }
               printk ("kctl->id.index = %X id->index =
%X\n",kctl->id.index,id->index);
               if (kctl->id.index > id->index) {
                       continue;
               }
               printk ("kctl->id.index + kctl->count <= (?) %X
id->index = %X\n",kctl->id.index+kctl->count,id->index);
               if (kctl->id.index + kctl->count <= id->index) {
                       continue;
               }
               printk ("list_for_each(list, &card->controls) exit
_ctl_find_id\n");
               return kctl;
       }
       printk ("_ctl_find_id return NULL\n");

       return NULL;
}
------------------------------------------------------------------------------------------
this is my syslog-output:

what bugs me is that the very first syslog message is crippled.

are there any problems with gcc 3.2.3 ?! (or with glibc 2.3.2)

Nov 18 10:05:41 sipiyou kernel: >id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Switch'
id->name= 'Capture Volume'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Volume'
id->name= 'Capture Volume'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Switch' id->name= 'Capture Volume'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Bypass' id->name= 'Capture Volume'
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id return NULL
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add:: kcontrol->id == 0
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Switch'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Volume'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Switch'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Volume'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Switch'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Volume'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Switch' id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Bypass' id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Capture Volume'
id->name= 'Capture Source'
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id return NULL
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add:: kcontrol->id == 0
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Switch'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Volume'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Switch'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Volume'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Switch'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Volume'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Switch' id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Bypass' id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Capture Volume'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Capture Source'
id->name= 'Mic Boost'
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id return NULL
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add:: kcontrol->id == 0
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Switch'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Volume'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Switch'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Volume'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Switch'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Playback Volume'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Switch' id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Bypass' id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Capture Volume'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Capture Source'
id->name= 'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Mic Boost' id->name=
'Loopback Capture Switch'
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id return NULL
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: _snd_ctl_add:: kcontrol->id == 0
Nov 18 10:05:41 sipiyou kernel: _ctl_find_id called (/sound/core/control.c)
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Switch'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'PCM Playback Volume'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Switch'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:41 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:41 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:41 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:41 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:41 sipiyou kernel: kctl->id.name = 'Line Playback Volume'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Aux Playback Switch'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Aux Playback Volume'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Mono Playback Switch'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Mono Playback Volume'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Switch' id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Mono Output Playback
Bypass' id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Capture Volume'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Capture Source'
id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Mic Boost' id->name=
'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'Loopback Capture
Switch' id->name= 'Loopback Capture Volume'
Nov 18 10:05:42 sipiyou kernel: _ctl_find_id return NULL
Nov 18 10:05:42 sipiyou kernel: snd-mixer-4231 ok
Nov 18 10:05:42 sipiyou kernel: pcm-chan returns 2
Nov 18 10:05:42 sipiyou kernel: capture = 0 , interwave =1
Nov 18 10:05:42 sipiyou kernel: pcm_dev = 1 channels = 2
Nov 18 10:05:42 sipiyou kernel: snd-pcm-new ok
Nov 18 10:05:42 sipiyou kernel: snd-pcm-set ops ok
Nov 18 10:05:42 sipiyou kernel: snd-pcm-lib-preallocated ok
Nov 18 10:05:42 sipiyou kernel: _snd_ctl_add called (/sound/core/control.c)
Nov 18 10:05:42 sipiyou kernel: _snd_ctl_add:: kcontrol->id == 0
Nov 18 10:05:42 sipiyou kernel: _ctl_find_id called (/sound/core/control.c)
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'PCM Playback Switch'
id->name= 'PCM Playback Volume'
Nov 18 10:05:42 sipiyou kernel: list_for_each(list,
&card->controls)-loop start
Nov 18 10:05:42 sipiyou kernel: kctl->id.face = 2, id->iface = 2
Nov 18 10:05:42 sipiyou kernel: kctl->id.device = 0 id->device= 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.subdevice = 0 id->subdevice=0
Nov 18 10:05:42 sipiyou kernel: kctl->id.name = 'PCM Playback Volume'
id->name= 'PCM Playback Volume'
Nov 18 10:05:42 sipiyou kernel: kctl->id.index = 0 id->index = 0
Nov 18 10:05:42 sipiyou kernel: kctl->id.index + kctl->count <= (?) 1
id->index = 0
Nov 18 10:05:42 sipiyou kernel: list_for_each(list, &card->controls)
exit _ctl_find_id
Nov 18 10:05:42 sipiyou kernel: bug here id=0 2
Nov 18 10:05:42 sipiyou kernel: bitch card = -454433792, kctl = -551828960
Nov 18 10:05:42 sipiyou kernel: pcm-new returns -16
Nov 18 10:05:42 sipiyou kernel: InterWave soundcard not found or device busy
--------------------------------------------------------------------------------

I did in the meanwhile another test with the latest 4F-OSS stuff
(ftp://www.se.opensound.com/pub/oss/linux/oss398b-linux-v2x.tar.gz).
They're having the same problem with the interwave card (error message
is almost the
same which says that the card is not found or busy...).
Did they copy the alsa-engine and are now charging money for it ?

Nima.


On Mon, 17 Nov 2003, Nima Ghassemi wrote:



hi,

there's some problem which I tracked down to

~alsa-driver/sound/core/control.c

int snd_ctl_add(snd_card_t * card, snd_kcontrol_t * kcontrol)
{
       snd_ctl_elem_id_t id;
       unsigned int idx;

   snd_runtime_check(card != NULL && kcontrol != NULL, return -EINVAL);
       snd_assert(kcontrol->info != NULL, return -EINVAL);
       id = kcontrol->id;
       down_write(&card->controls_rwsem);
   if (_ctl_find_id(card, &id)) {
               up_write(&card->controls_rwsem);
               snd_ctl_free_one(kcontrol);
               return -EBUSY;
   }
[...]

the problem lies in _ctl_find_id (card, &id). by commenting the if-block
out, everything (as well
as the sound-card) works perfectly (as far as I could test it...).



Can you add some printk's to determine which id is causing the problem so we can fix it? Thanks.

Jaroslav

-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs


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