[Alsa-user] SNDRV_PCM_IOCTL_LINK: Inappropriate ioctl on intel8x0m

[Josh L. <jo...@em...>]

Trying to create a wrapper around my Intel modem device.  It works okay
when I let the userspace modem daemon access the raw hardware.  However,
when I try to build a wrapper around it with this asound.conf:

-=-=-=-=-
pcm_slave.vmodemPtuner {
        rate 9600
        channels 1
        period_size 48
        buffer_time 5000
        pcm "hw:1,0"
}

pcm_slave.vmodemCtuner {
        rate 9600
        channels 1
        period_size 48
        buffer_time 5000
        pcm "hw:1,0"
}

pcm.vmodemC {
        type dsnoop
        ipc_key 12345
        ipc_key_add_uid yes
        slave vmodemCtuner
}

pcm.vmodemP {
        type dmix
        ipc_key 12346
        ipc_key_add_uid yes
        slave vmodemPtuner
}

pcm.vmodem {
        type asym
        playback.pcm "vmodemP"
        capture.pcm "vmodemC"
}
-=-=-=-=-=-=-

and try to bind slmodemd to vmodem:

-=-=-=-=-=-=-
/usr/local/bin/slmodemd --country=USA --alsa vmodem
-=-=-=-=-=-=-

and open it by issuing an ATDT modem command, I get the error:

-=-=-=-=-=-=-
ALSA lib pcm.c:1178:(snd_pcm_link) SNDRV_PCM_IOCTL_LINK failed:
Inappropriate ioctl for device
error: snd_pcm_link error: Inappropriate ioctl for device
-=-=-=-=-=-=-

I want very much to have at least the dsnoop portion of the wrapper
intact, so that I can push the sound from the modem through the primary
sound device for monitoring purposes.  Any help would be greatly
appreciated.

-- 
Josh Litherland (jo...@em...)
Emperor Linux, Inc.