[alsa-devel] ICE1724 - File descriptor in bad state when capturing

[Takashi Iwai]

At Sun, 09 Mar 2008 23:56:01 +0100,
Pavel Hofman wrote:
> 
> Hi,
> 
> I have most of the ESI Juli driver working, but I have hit a problem 
> with the capture stream. I had to modify some ice1724.c code to allow 
> redefining clock-related functions in the actual card file (Juli has a 
> different clocking scheme), but all the DMA code is left intact, as well 
> as the methods defining the capture stream.
> 
> The ice1724 vu-meters detect input ADC data, I can hear correct sound 
> when setting the internal mixer to H/W-In. Yet, when trying to record, I get
> 
> arecord -v -D hw:0,0,0 -r 44100 -f S32_LE -c2
> 
> ....
> RIFF$WAVEfmt  ... data arecord: pcm_read:1346: read error: File 
> descriptor in bad state

It's -EBADFD and indicates that the PCM state isn't the expected one,
in this case, SNDRV_PCM_STATE_PREPARED or RUNNING.
The error comes from snd_pcm_capture_ioctl1() in core/pcm_native.c.
Not sure what is broken, but this should be the starting point.


Takashi