At Sun, 23 Mar 2003 02:08:51 -0400,
Manuel Jander wrote:
>
> Hello,
>
> I'm having serious trouble implementing record support into the Aureal
> Vortex driver.
> I get total lockups...
>
> The obvious answer would be: the cards overwrites your kernel :) ... but
> i double checked
> that. If that would be the case, playback wouldnt work either (i would
> hear noise, or at least a crack).
> I'm using the same operator functions (callbacks) for recording and
> playback with some very few
> branch code to decide between record and playback.
>
> Is there something like a typical pitfal list ? Any important difference
> when recording
> instead of playback ?
i don't know of any big differences between playback and capture
except for the hardwares which need buffer copy.
> Can i use runtime->dma_addr just as when doing
> playback for
> the DMA address programmed into the SoundCard ?
yes.
hmm, what i would check are
- the buffer allocation and the hardware config are ok?
-> check debug print in prepare()
- interrupts properly acknowledged?
-> check the interrupt handler
- any spin dead locks?
-> removing locks first (for UP)
and if alt+sysrq works, you can get the trace.
Takashi
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