[alsa-devel] Problems with 32 bit apps on 64 bit OS using dmix and snd-ioctl32

[Takashi Iwai]

At Wed, 05 Sep 2007 17:54:35 +0100,
James Pearson wrote:
> 
> Takashi Iwai wrote:
> >>
> >>OK, I'll do a bit more poking about to see if I can get 1.0.15rc1 to 
> >>build ...
> >>
> >>Thanks
> >>
> >>James Pearson
> >>
> >>Configure output:
> >>
> >># ./configure --with-redhat=yes
> > 
> > 
> > The output looks OK to me.
> > Does the patch (to alsa-driver tree) fix the problem?
> > 
> > 
> > Takashi
> > 
> > diff -r adfe4179d670 misc/ac97_bus.c
> > --- a/misc/ac97_bus.c	Fri Aug 31 12:22:35 2007 +0200
> > +++ b/misc/ac97_bus.c	Wed Sep 05 18:09:42 2007 +0200
> > @@ -1,1 +1,3 @@
> > +#include <sound/driver.h>
> > +#include <sound/core.h>
> >  #include "../alsa-kernel/ac97_bus.c"
> 
> Yes ... I did something similar - copied in ../alsa-kernel/ac97_bus.c 
> and patched with alsa-driver-1.0.13/pci/ac97/ac97_bus.patch - which 
> makes it compile - it bombs out later on some of the soc/ code - but as 
> nothing similar exists in 1.0.13, I just skipped that with 'make -i' ...

Hm, maybe it's better to specify 2.6.16 or so for SND_SOC in
alsa-driver/kconfig-vers.  Could you check whether it works?

> However, with these 1.0.15rc1 modules installed, and using 
> alsa-lib-1.0.15rc1, I get exactly the same problem with 32 bit apps:
> 
> Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
> aplay: pcm_write:1268: write error: Invalid argument
> 
> amd dmesg has:
> 
> ioctl32(aplay:6228): Unknown cmd fd(3) cmd(40045402){00} arg(ffffac98) 
> on /dev/snd/timer
> ioctl32(aplay:6228): Unknown cmd fd(5) cmd(c008551a){00} arg(0806ccd0) 
> on /dev/snd/controlC0
> ioctl32(aplay:6228): Unknown cmd fd(5) cmd(c008551b){00} arg(0806ccd0) 
> on /dev/snd/controlC0
> ioctl32(aplay:6228): Unknown cmd fd(3) cmd(000054a0){00} arg(00000325) 
> on /dev/snd/timer

Do you use the latest alsa-lib, too?
The old alsa-lib tries only the old ioctl, of course...


Takashi