[alsa-devel] PATCH - MIDI on ice1724 - real-time kernel problem SOLVED(?)

Martin Krüger m_a_krueger at gmx.de
Thu Jun 26 23:01:15 CEST 2008

Martin Krüger schrieb:
> Hi Pavel,
> sorry for the long break, i was really busy at studying.
> ---snip---
> Thanks a lot,
> Martin
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> Alsa-devel mailing list
> Alsa-devel at alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Hi again,

i did some other playing around this evening. (Debugging would be a word 
much too big...)

I commented out the logic stuff in the following subroutines of the 

- static int vt1724_midi_output_open(struct snd_rawmidi_substream *s)
- static int vt1724_midi_output_close(struct snd_rawmidi_substream *s)
- static void vt1724_midi_output_trigger(struct snd_rawmidi_substream 
*s, int up)
- static void vt1724_midi_output_drain(struct snd_rawmidi_substream *s)

The vt1724_enable_midi_irq(s, VT1724_IRQ_MPU_TX, 1) is killing my 
kernel, i don't know why.
On the input side everything works, so i am a bit confused. Again. ;-)

I will continue debugging, at all this seems to be a good starting point 
for me.

It would be glad, if you could help me some way.


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